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Diamond Vault of Troy

Map & Directions
(99 Reviews)

801 W Big Beaver Rd Ste 103, Troy, MI 48084

(248) 244-0600

Today: Closed
Tomorrow: 9:00 am - 6:00 pm
BBB Accredited businesses follow the BBB Code of Business Practices and pay a fee for accreditation review and monitoring. Accreditation is not a BBB endorsement or evaluation of the business’ product quality or competency in performing services.

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We evaluate EVERY coin in front of you!

General Info
Our Goal…Is to be your personal jeweler for life! Diamond Vault of Troy has the most positive online reviews of any jeweler in the state of Michigan. We are a Google “Favorite Place” business which is the top 1% of all businesses in the USA. We are a certified precious metal and gem dealer by the city of Troy, Michigan and have an A+ rating with the BBB. Our low overhead, exceptional personalized one-on-one service, FREE verbal coin consultations, 25+ years experience, and 10 point coin evaluation system allows us to pay 20%-40% more than our competitors for your US/ Canadian silver and gold coins. We educate our customers to the significant difference between “Melt Value’’ vs. the “Fair Market Value” that we pay our clients. We want to pay you more which accounts for our explosive coin buying growth over the last two years. If you want an insurance written appraisal for yourself at current market value or at insurance replacement value, we have a fee based service that is discussed and agreed to before starting your appraisal. We also evaluate, distribute, appraise, and when necessary liquidate coins for estate and probate circumstances. Banks, lawyers, and insurance companies use us for liquidation purposes.
BBB Rating
BBB Rating and Accreditation information may be delayed up to a week.
BBB Accredited businesses follow the BBB Code of Business Practices and pay a fee for accreditation review and monitoring. Accreditation is not a BBB endorsement or evaluation of the business’ product quality or competency in performing services.

BBB Rating and Accreditation information may be delayed up to a week.
Regular Hours
Mon - Fri:
Why does the Diamond Vault of Troy have the most positive reviews of any jeweler in Michigan? Personalized service extraordinaire, unbeatable pricing due to low overhead, FREE GemPrint on all center stones, FREE custom design on engagement rings, over 49 years of experience satisfying customers, and FREE coin consultations by our certified numismatist. The Diamond Vault of Troy is The Knot Magazine award winner “Best of Weddings” by brides 3 years running. Was featured on Detroit Local 4 Defenders with Karen Drew exposing coin buying scams. Better Business Bureau A+ rating. Best of Detroit readers choice award by Metro Times. Google Favorite Place - top 1% of all jewelers in the USA. Yelp “People Love Us” award as a Top Local Jeweler. We are a certified precious metal and gem dealer by the city of Troy, Michigan. Personal private appointments are the basis for the exceptional “buying experience” our clients rave about. A customer is given all the time and information they need in a non-pressured environment to make their diamond purchase. Satisfying our clients need and wants within their budget is our main goal, because we want to be your jeweler for life. We are known for our FREE custom ring design. This priceless feature enables us to create the engagement ring of her dreams. We buy gold, silver coins, and diamonds. Every item will be examined in front of you and the consultation is FREE. Don’t be misled; know what you have before you sell. You should not be satisfied with scrap silver pieces when you could be holding a very rare coin. The smallest of differences in grade, year, or mint mark can affect your price. If you need an appraisal for insurance purposes, our G.I.A certified gemologists are available on a fee bases service. If you would like to insure that your diamond can always be identified as your diamond, then get your diamond registered with GemPrint. This one-time registration will help protect your ring for life and give you a discount in your insurance rate. Most major insurance companies offer discounts from 5% to 10% off your annual fees. Diamond Vault of Troy is the only company in Michigan offering this service.
Peter Storm, Steffen and Fendi watches, White Isle Pearls, A.G.S.-H.R.D. & Canadian Certified Diamonds, Beverly K Collection, Carbon 14 Watches, Doves by Doron Paloma, FireCushion Diamond, FireMark Diamond, Fredric Sage, GIA-AGS-HRD Diamonds, Graf Von Faber-Castell Pens, Ideal2 Diamond, Imagine Bridal, KC Designs, Major 3rd party grading companies such as PCGS (Professional Coin Grading Service) and NGC (National Guaranty Corporation) are used when appropriate to authenticate and grade your numismatic coins. US and major foreign country silver coins are accepted for verification, grading, valuation and purchase., Phantom Diamond, Triton Jewelry
We are located on the 1st floor of the Huntington Bank Building on West Big Beaver Road 1 mile east of The Somerset Collection
Downtown Troy, Troy
The Diamond Vault of Troy owners, Randall E. Cole and Timothy A. Mayer have over 49 years of experience satisfying their clients. Personal contacts developed over their careers has led them to personally source hand-picked diamonds directly from Antwerp, Belgium every month in order to eliminate middlemen and pass the substantial savings to their customers. Private personal appointments where each client is given all the education they need to man an informed and rewarding buying decision in a non pressured atmosphere is our specialty. We also have a child friendly office where we provide children with coloring books, cartoons, juice boxes, and treats to keep them entertained while parents conduct their business with our jewelers. We value our clients as lifetime customers so we provide a host of valuable FREE services that takes our customer service to another level of satisfaction. We offer: FREE jewelry stream/ultrasonic cleaning for life. FREE written fine jewelry appraisals for insurance purposes for life, on your purchased item. FREE verbal coin consultations when selling silver coins done in front of you. FREE custom design on engagement rings. Bring in a picture or a dream and we make it a reality at no charge for this priceless expertise. FREE Gemprint on all engagement center stones which is a onetime diamond registration that identifies your diamond for life, like a fingerprint and can save you 5-10% off your annual fees from most major insurance carriers.

BBB Accredited Business A+ Rating. Troy Chamber Member

AGT Member

Certified numismatist

GIA certified gemologists

Readers Choice Best of Detroit winner

The Knot Best of Weddings winner, 5 times

Oakland Press Best of the Best award winner

Certified Precious Metal Gold Dealer by the City of Troy Certified by G.I.A. for Diamond Grading Evaluation since 1979 Jewelers Board of Trade Member JBT American Gem Trade Association
Other Email

Coin Dealers & Supplies, Collectibles, Diamond Buyers, Diamonds, Diamonds-Wholesale, Gold, Silver & Platinum Buyers & Dealers, Jewelers, Jewelers-Wholesale & Manufacturers, Jewelry Appraisers, Jewelry Buyers, Jewelry Designers, Jewelry Repairing, Pearls, Wedding Supplies & Services
Other Information

Bike Parking: Yes

Wheelchair Accessible: Yes

Price Range : Average

Parking: Lot, Free

By Appointment Only: No


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Michael A.



I couldn't be more pleased. Peter-John helped me out and he was tremendous. Extremely knowledgable and honest I knew I had made the right decision after just a few minites with him. My fiancée has stated that the ring is perfect about 20 times now. Never going anywhere else!

Tara D.



Now THIS is how you buy a ring!!

Ive honestly never experienced a "real" jewelry shopping experience until I was fortunate enough to find "Diamond Vault of Troy" this is an unfortunate statement considering that this is my 4th wedding ring. But now that Ive found DVOT I can not see myself going anywhere else...Let me explain.

I had an insurance claim on my wedding ring (the diamond was damaged) so I was in search of a reputable place to replace it. I did a search for "Jeweler" on google and was taken aback by all the wonderful reviews I read for DVOT. That, and the ideal location near somerset mall, which I often frequent, had me curious enough to make an appointment. From the time I first walked in I was blown away! This is a gorgeous and private location, with a truly relaxed atmosphere. The kind receptionist offered me my choice of beverage.."a glass of wine, of course"-already off to a good start! As I waited in my private office for the store owner, I could over hear the conversation of a gentleman in the lobby explaining the ABC's of diamond selecting to a client "wow this is what I needed all those years ago, when I selected my rings!" I thought. Then I met Randy. Right away I was extremely impressed with how much he educated me. He was able to pinpoint how and where the damage occurred on my old diamond and give me good options for my replacement. He also contacted my insurance company for me, and handled all the paperwork, only thing he left for me to do was select my diamond! He showed me a wide variety of options and possibilities, but what REALLY impressed me was how he respected my budget, he knew what I received from the insurance claim and carefully stayed in those boundaries, I really appreciated that. Finally I selected my dream diamond!..the only problem was that it didn't fit in my rings setting. Randy worked with me week after week; month after month as I changed my mind and went back and forth about what I wanted. He never once showed impatience or annoyance, instead he spoke very reassuring to me about how important it was to him that I was happy...That really put me at ease.. The finished product is an absolutely breath taking incredible ring! I could not be happier with my new ring or the wonderful experience and service i received at the Diamond vault of Troy. Thank you Randal, we will defiantly see you again!

Brad H.



Randy Cole of the Diamond Vault of Troy has one of the most stellar reputations in jewelry in southeast Michigan. He is not only honest and knowledgeable, but has a desire to let his expertise work to your advantage. He and his team are community minded and their generosity in helping with humanitarian efforts is unmatched. Thank you, Randy, for dispelling the "hard-sell" notion and giving your very best to each person who walks through your doors.

Okezie A.



What an incredible experience with Peter-John Paresis, Graduate Gemologist. I began my search for an engagement over 1 year ago, knowing a decent amount of information about diamonds. My first interaction with Peter-John was informational. We discussed the 4 C's and what I was looking for. Rather than a salesperson to a customer relationship, Peter-John approached it with his wide knowledge base, being that he is a GIA Certified Graduate Gemologist. The best part is that he is a one stop shop for information, rather than a salesperson having to ask others about your ring quality. I was not ready at that time to purchase and Peter-John did not try to convince me otherwise. We stayed in touch and he continued to provide me with information peripherally. I did look around at some other local diamond places, but found myself back where I started at Peter-John's desk. He found me an amazing GIA round diamond that my Fiancee absolutely loves. She gets compliments every day. The entire process was made so easy for me and Peter-John was the reason why. I would recommend anyone who is looking for a diamond to go and see him. And if you are going with DVOT, I would recommend you use him specifically. I can't thank him enough for what he did for me and I know he will do for many others.

Justin H.




When I think of engagement ring shopping as a man, it is intimidating. It took me quite a bit of courage to even step foot into a jewelry store. When my fiancé and I would look, we always felt hustled and I walked away with a bad gut feeling. I also didn't want to get her hopes too high checking out many stores so I decided to start looking by myself and keep a little mystery in the picture.

I searched the web for other local businesses, and came across Diamond Vault of Troy. When I arrived, I was greeted by Peter-John Parisis. I was impressed right off the bat because I was offered a coffee with Baileys (and it was quite delicious at 9am). I found out that Peter-John was a minister and extremely friendly. He stepped me through the diamond picking process with ease. Explaining the 4 Cs and how to get the best diamond with my budget. I had a very strict and tight budget, and not once was pushed to go above and beyond.

We searched for a diamond and I was very impressed with what we found. The carat, color, cut, and clarity were extremely good for the price allocated for the diamond. After picking out the diamond, we decided to design the ring custom to fit the diamond perfect. I sat down and discussed what I noticed my fiancé liked. After a couple days, I received a CAD drawing, and was asked to approve the design. I thought it was perfect, and exactly what I was looking for. A couple days after that, I received a call that the ring was ready to be picked up.

This is the point where I got nervous. This was the biggest purchase of my life. It not only was because of price, but because it is a lifetime commitment, and something that will change my life. I had butterflies (manly butterflies that is), and went to receive my ring. Because Peter John was GIA certified and a Graduated Gemologist, I received the certified appraisal from the same location. I was going on a trip to California, and planned on transporting the ring in the box, and propose sometime out there. Peter John gave me some tips to make that moment perfect. Instead of carrying a bulky box in my pocket, I received a pouch to carry the ring in. I hid the box in a thick sock in my suitcase. (After the fact, she admitted to feeling my pockets when we met each other to see if I had a ring, but didn't feel anything).

My overall experience was great, and plan on going back for future purchases. Peter-John Parisis was extremely honest and detail oriented. I highly recommend the Diamond Vault to anyone because you won't be disappointed!

Yvonne I.


Awesome job on my custom ring

Diamond Vault of Troy made me a custom ring that was exactly what I wanted. The process was super simple. Holly measured my finger, asked me a few questions, I explained what I wanted and a couple weeks later my ring was ready for pick up. I LOVE it. I get tons if compliments on it. Here on out, Tim and Randy are my jewelers and I will recommend them to everyone. Thanks Diamond Vault!!

David C.



The diamond vault of troy is the only place to go when looking for jewelry. I was lucky enough to have been guided by a friend to the diamond vault to purchase my now fiance's ring. After my experience at the diamond vault of troy and Peter-John, I will never purchase jewelry anywhere else. Peter-John helped me every step of the way in building the engagement ring. He helped me find the most beautiful Firemark diamond that shines like no other diamond I have ever seen. Not only did Peter-John find me an amazing diamond, he stayed within my budget and never tried pushing me into spending more than I could afford. Now that's a rare find when it comes to the world of jewelry. Peter-John and the diamond vault of Troy helped me put a beautiful ring on my fiance's hand and made us both happier than ever. There is nothing better than having a fiance who is always showing off her ring to her friends and family and I owe it all to Peter-John. Peter-John continued to stay in touch with me following my engagement which shows he truly cares about his clients. If you are looking for a jeweler who will get you what you want and never pressure you into buying something like all other jewelry stores do, go to Peter-John and The Diamond Vault of Troy.

Ricardo C.



I recently purchased an engagement ring at Diamond Vault of Troy. I went in knowing nothing about diamonds or rings and after a brief meeting with Peter-John I felt completely comfortable and confident in my decisions. Peter-John is Graduate Gemologist from GIA and also a licensed Minister. This means he knows what he's talking about AND he's not lying to you. He walked me through a bunch of different diamonds and educated me on all the different variables to consider when buying a ring. Needless to say, I ended up with the perfect diamond.

It was a pleasure to work with PJ, and he offered some great tips on everything from proposing to crossing the border with the ring (I'm from Canada). I look forward to working with Peter-John on the wedding band and all future jewelry purchases. Diamond Vault of Troy now has a customer for life.

Katie H.



Okay people, seriously....Peter-John is the best! Not only a certified gemologist, but also an ordained minister (so you know he won't lie) :0)

When my fiancee proposed, I couldn't even breathe. The ring was SO beautiful!!! And we went back to pick out wedding bands, and will be customers for life.

Thank you Peter-John!

Keith H.



I was so nervous when I was in the beginning stages of trying to find an engagement ring, but I decided to take the advice of my recently married friend and go to the Diamond Vault of Troy. He told me that their customer service was second to none, the quality of rings they crafted were spectacular and that they were willing to work with your budget. He was not lying!! As soon as I stepped into their store, they greeted me with open arms. I could not have asked for a better person to work with than Peter John!! He wasn't just trying to sell me a ring, he wanted to get to know myself and my girlfriend. He was kind, he told me the most important things to look for when picking out a ring and was not pushy at all. In the end, my ruby and diamond engagement ring turned out great! My fiance said that she could not have pictured I better ring if she tried. In conclusion, I definitely recommend the Diamond Vault of Troy and Peter John for all your jewelry needs!!




My fiancé and I only looked at the Diamond Vault of Troy for engagement rings. We had read all of the reviews online and my sister had purchased her engagement ring from them, so we knew that the Diamond Vault of Troy was the only place we wanted to go.

Peter-John worked with us on choosing a ring and educated us on all of the aspects of diamonds. I wanted a simple solitaire setting and Peter-John did not try to pressure me into picking a setting that I did not want. He also asked us what we wanted to spend and only showed us diamonds that were within our price range.]

I was fully expecting to walk out with a round, solitaire engagement ring. Little did I know that Peter-John would show us a different cut that would out-sparkle a round diamond. When I said that I wanted a round diamond, Peter-John asked me if I wanted to outshine everyone with a round diamond. He said he couldn't let me pick a round diamond without showing me the FireMark Princess Cut diamond. Peter-John brought out one FireMark and several round diamonds in our price range and then the comparison began. I had the FireMark and a round on my hand and the Firemark had more sparkle and brilliance. We also did a walking comparison where an associate had a round diamond on one hand and a FireMark on the other. She walked towards us and we were told to pay attention to which one sparkled more. The FireMark won that comparison. The sparkle and brilliance of the FireMark convinced me to get it for my engagement ring. I never thought I would choose anything but a round cut because I wanted the sparkle that a round diamond has. But the FireMark is not a traditional princess cut and is above and beyond a round diamond.

We picked up my ring yesterday and I am in love with it and couldn't ask for a better ring! I am already getting compliments from future family members and they are only looking at pictures and not the actual ring! I cannot wait to go pick out our wedding bands in a few months! Thanks Peter-John and Diamond Vault of Troy!




There is no better place to look for jewelry than the Diamond Vault of Troy. Dealing with Tim was an amazing experience from the first moment we talked into the vault. There was no pressure to buy and he was extremely informative. Tim was able to custom make our pieces to our exact specifications and the final results far exceeded our expectations. There is no where else we will buy jewelry from this point on.




After going to about 10 different “chain” diamond stores, I was completely blown away from the moment I walked in the door at Diamond Vault Of Troy. Tim and Randy greeted me as though I was a longtime friend, and they guided me throughout the entire process of picking of an engagement ring. I came into their store after doing a fair amount of research on diamonds and engagement rings, but the level of their knowledge showed me that I had barely scratched the surface.

Being the indecisive person I am, it was hard for me to make a decision on both a stone and a setting. While most stores would be annoyed by this, Tim and Randy embraced it and allowed me to take my time rather than pushing me into a product or trying to upsell me. They personally showed me countless stones side by side and personally educated me on the differences between each stone and how those differences affected the price. They acted as consultants with my best interests in mind throughout the entire process. They even helped me to determine my fiancé’s taste based off of pictures she had sent me, and by the time we were done they were making me a customized ring to fit exactly what I wanted!

My fiancé knew she wanted a princess cut stone, but my concern was that a princess stone wouldn’t provide the sparkle she was looking for in the same way that a round would. I was nervous about getting a princess stone just because of this fact; that was until Tim and Randy introduced me to the FIREMARK Princess Cut diamond. This diamond is amazing, and I learned that Diamond Vault Of Troy is the only distributor of these stones in Michigan. It is the only princess cut diamond that has the same sparkle and brilliance of a round cut stone due to its precision cut and unique faceting. Now, when she puts her ring next to other ordinary princess cut stones, it blows them away and makes them look dull and ordinary. It’s a great feeling knowing that she has a very unique ring in the FIREMARK, and it’s an added bonus that I was the first customer to purchase a FIREMARK diamond in the state of Michigan!

Overall, I would not recommend anywhere else when it comes to jewelry and engagement rings. Tim and Randy have over 25 years of experience, and they make you feel at home throughout the entire shopping experience. They provided me with custom made piece based off a Tacori ring with a FIREMARK princess diamond for my proposal for about 1/3 of the price of other jewelers, and I can tell by the look in her eyes that it truly is everything she wanted in her engagement ring. We couldn’t be happier, and we will be lifetime customers of the Diamond Vault Of Troy!




I took my 34 year old wedding set to Diamond Vault of Troy to have the stones re-set in a newer setting. I also wanted to use as much of my gold as possible in the new ring. I also wanted a custom designed setting. Well, Randy was able to do it all, and magnificently! He walked us through each step, listened to all we had to say, was able to figure out exactly what I wanted (I didn't even know what I wanted), and created for us a truly special, unique, and beautiful ring. Everyone at DVT was friendly and helpful and I highly recommend them.



The service I received at the ...

The service I received at the Diamond Vault was exceptional. I sold some jewelry and was paid more here than other places that quoted me. And, they even gave me $100 towards the gas for driving from an hour away. It was very personal service and I hope to 'buy' something from them in the future rather than 'sell'. They have wonderful staff and Randy is a great person to do business with! Highly recommend...even if you live far (like myself) was worth the drive to do business with a great company.



I can not speak highly enough ...

I can not speak highly enough of Diamond Vault of Troy. I have the most beautiful custom made engagement ring from here. I live in NYC, and people are constantly asking me about this ring and raving about it. The craftsmanship and attention to detail is absolutely superb. The location is beautiful, the staff is attentive and really knows what they are talking about. Ask for Randy! He knows what he's talking about and I promise he will help you find exactly what you are looking for! No matter where I live, this is where I will go for any jewelry purchases!



Absolutely Wonderful!!!!

The Diamond Vault of Troy is absolutely wonderful! I was so very pleased with the one on one customer service. Tim educated me and helped me to put together a engagement ring that deserved a name, Ms. Loretta. I had been to several big named jewelers looking for a ring, everything was standard run of the mill and poor quality for the asking price. I found the Diamond Vault on the internet and I was impressed and pleased upon arrival to the store. My new husband and I are planning to make all future jewelry purchases from the Diamond Vault of Troy!!!



I am a first time customer of ...

I am a first time customer of the Diamond Vault of Troy but am experienced when it comes to engagement rings and other jewelry. In fact, I had a wedding ring for 11 years and unfortunately it was stolen. I was devistated and without going into too much detail, I was very reluctant to even wear another ring again because it was stolen off of me when I was wearing it. It was beautiful. It was insured as I encourage EVERYONE to do but sentimental value cannot be replaced. I looked around and found the Diamond Vault of Troy. Prior to the day I met Randy I was not convinced by ANYONE ELSE that I wanted to but a ring from them. The search ended here. I left the store and told my husband "This is where I am getting my ring". I payed several visits and after I made my choice, Randy showed me my ring and cried. I've never seen anything like it. As I hugged him and thanked him, I was reassured that I need to have a ring on my finger again. Everyone I dealt with here was sensitive, caring and genuinely wanted to make me happy. I am. Thank you Randy and The Diamond Vault of Troy for treating me like a friend and not just another customer to get a sale from.

Michelle S.


The ring I have now appraised for much more than the one I had.