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Suncoast Gem Laboratories We would love to meet you one-to-one to help you make the perfect jewelry selection which reflects your style at the right price point. We cater to a variety of clients who share a desire for quality, convenience and personalized attention. The most desirable benefit of having custom designed jewelry is that no one else in the world will have the exact same piece.

Mr. Seguin owns and operates Suncoast Gem Laboratories, which is the only state-of-the art Certified Gemological Laboratory of the. Since 1985 Suncoast has been offering Diamonds, Gemstones and Jewelry of all types for just above wholesale cost.
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At Suncoast Gem Lab our goal has always been to provide our clients with the most current and accurate information on gems and jewelry. As always, if you can't find the answer here, contact us at our office and we will be happy to assist you.
The most desirable benefit of having a custom designed piece of jewelry is that no one else in th world will have the exact same piece. There may be similar designs but a totally custom jewelry piece will be yours and yours alone. Other benefits include the fact that it will be made to your exact specifications and will fit perfectly.
Tom Seguin is an independent appraiser of fine jewelry serving the Tampa Bay area from his office in Bradenton, Florida. Mr. Seguin began his career in the jewelry industry as co-owner of Pure Excellence Fine Jewelry, a custom jewelry design jewelry studio in Sarasota, Florida in 1984. He earned his Graduate Gemologist (G.G.) diploma from the Gemological Institute of America in 1986 and earned his Master Gemologist Appraiser designation from the American Society of Appraisers in 1987.Mr. Seguin owns and operates Suncoast Gem Laboratories, which is the only state-of-the art Certified Gemological Laboratory of the Accredited Gemologists Association on the Gulf Coast of Florida.
Reviews (13)
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Maddie G.
Nov 27, 2021
We were in need of a quick glance at what we thought was potential damage to an engagement ring. Suncoast was able to see us the same time and provided quick and helpful service.
Carrie Swan
Jan 27, 2021
This man is rude. Their customer service is atrocious, and he comes off as very very greedy. I called to make an appointment to utilize their gemology service. I wear and buy a lot of jewelry which is all insured by Jewelers Mutual. Jeweler's mutual is who referred me to Suncoast Gems. I was looking to establish a relationship with an appraiser, and gemologist.

Their website looked reputable, and they offered the services I was looking for. I called with my latest acquisition, a mothers ring a friend had given me. I suspected that 2 of the stones were alexandrite, and wanted to get a professional opinion. The guy told me that they do provide that service, but he didn't feel like doing it, because he would only make $40.

He told me he'd be willing to look at my ring, but only if I was going to make an appointment for something like an appraisal where I'd be spending more money and make it worth his while. I agreed to have 2 of my pieces appraised there. I have quite a bit of jewelry and not every piece has been appraised to be insured, so I do have the need of the services Suncoast gems provide, but the more I thought about our interaction, the less I wanted to reward this man with my business. HE should be trying to win ME over and earn my business, I should not have to prove to them that I will be worth while customer. Take your business elsewhere. That's what I've decided to do.
John W.
Dec 21, 2020
I really appreciate the time and energy Tom and Donna have spent with me over the years! I highly recommend their company and have valued their expertise and advise which has always been freely offered regardless of a purchase. They are great for our community and have contributed much! Jw
Goody Persiflage
Nov 02, 2019
**Review of Appraisal Service** I do NOT recommend. I recently had a custom ring made from a collaboration of 2 other jewelers. I had 3 independent appraisals done to be able to choose the best for insurance. Suncoast, being the last of the appraisers, came in at 36% and 38% lower than the other two and was lower than my actual cost. Also consider that I was fortunate enough to buy several of my gems at wholesale.

The last thing said to me was "I am sorry you did not come to me to make that ring." Perhaps Suncoast makes nice jewelry but their appraisal process is antiquated and, more importantly, biased if you do not use their jewelry services. I was warned to only go to appraisers that do not sell jewelry. I only heeded this advice for the first two appraisers, Suncoast was my mistake.
Dell Baird
Jan 19, 2019
Tom and Donna are not only great to work with but are tops in their field. Tom is never at a loss for an idea on just how to improve a piece Jewelry.
T. C.
Jul 05, 2018
Tom and Donna are friendly and very professional. They came highly recommended and I was not disappointed. Had to have a small stone replaced in my engagement ring. The replacement stone is beautiful and the repair work excellent. Also had another ring cleaned up and repaired. Looks brand new. Prices were quite reasonable.
S.
Jan 02, 2018
I stopped by to get a ring sized. The store is inside a building with other stores. There is a reception desk. That's as far as I got. I was asked who I was here to see. Suncoast gems I stated. Well they are only seeing people by appt right now. Oh okay! So she then said she'd see if they could see me what did I need done? No thank you! I'll go somewhere else.
Lckfields
Jul 07, 2017
I had a necklace made for our daughter from a heirloom ring. They were able to create it exactly as my daughter had wanted. Great service, fair prices, quick work. Great local asset to our local business community.
Amy Shea
May 29, 2017
Tom and Donna are the best in their field and people you can trust
Larry Luh
Dec 29, 2016
Have been going here for quality in workmanship and products for decades.
David Dickson
Mar 24, 2016
We bought our Wedding rings through Tom and Suncoast Gem Laboratories. They were very professional and Tom seemed to have an extra understanding of what we were looking for. Made me look like a star.
Rick H.
Dec 03, 2015
From start to finish, Tom and his people were amazing! He had a custom ring designed and made for my wife using a family heirloom Pearl as the center piece. It came out better than I could ever have imagined. I couldn't of asked for a better experience. Thank you Suncoast Gems!
Terri M.
Oct 10, 2014
Tom and Donna Seguin, Gemologists, and owners of Suncoast Gems, are amazing! They provide exceptional customer service with the highest quality products and design. They have taken care of my jewelry for almost a decade and I have never been happier. Thank you, thank you!