About PrimaGemsUSA


Prima Gems USA is an exciting new venture for the Prima Gems franchise. This dedicated sales office based in New York, USA is a great addition to our buying office in Arusha, Tanzania and manufacturing offices in Jaipur, India and Bangkok, Thailand.

Prima Gems USA has been established keeping one goal in mind: To provide our valued customers in the United States and all around the world, competitively priced gemstones with extraordinary customer support and service.

With support from its sister companies Prima Gems Tanzania LTD, which to this day remains one of the largest independent buyer of gemstones, based in Tanzania and Prima Gems India, which employs over 100 gem cutters with world class standards, Prima Gems USA is in a great position to provide its customers with the finest gemstones in the world at unbelievable prices.

Our knowledgeable customer support team is equipped to answer questions and fill orders both through the telephone and internet and is always available at your service. All you need to do is give us a call or send us an email and we shall take care of you.


Prima Gems USA, with its state-of-the-art website, intends to provide a refreshing shopping experience for Wholesalers, Jewelers and Newcomers alike!

This website is also a great medium to share news and information about the latest happenings in the Gem and Jewelry world with our personal comments and analysis.

Users are encouraged to register with us to receive information on the latest products and deals we have to offer. Discounts coupons and gift vouchers will be mailed periodically to all registered users.

Wholesalers, Jewelers and Resellers can register along with their business licenses, which upon approval, would entitle you to additional discounts, special prices and other benefits.


Prima Gems has been known the world over for showcasing some of the most magnificent and important gems coming out of East Africa.

We specialize in Tanzanites, Tsavorites and Mint Garnets coming out of the Merelani Hills, specifically from the Karo Pit, which is considered by experts to be an extension of Block D.

In recent years we have also been known for our hot pink and deep red spinels coming out of Mahenge, Tanzania. We also carry a nice selection of Spinels from the Tunduru Region.

In 2007 we were foremost in acquiring gem grade Spessartite from the Loliondo find. We still have the largest selection of bright orange cut Spessartites from this location in all shapes and sizes.

Tsavorites from Lemshuko, Tanzania and Voi, Kenya are another specialty. We try to focus on the largest, brightest and cleanest stones from these localities.

We always carry a great stock of Red and Fancy colored Zircons from the Tanga Region of Tanzania.

Good quality Garnets, namely Rhodolites, Umbalites, Imperials, Malaya from the Umba Valley and other regions of Tanzania are always available.

If you need something you don’t see on the website, please feel free to give us a call or send us an email. Chances are we have it in stock or can call for it from our other offices around the world.


Bimal Gudka

Bimal Gudka started Prima Gems Tanzania in 2000 after moving to Arusha, Tanzania from Mombasa, Kenya. Bimal has been involved with the East African Gem Trade for close to 35 years now. To this day he remains the biggest individual buyer of gemstones based in Tanzania with his specialty being Gems and Minerals from the Karo Pit in the Merelani Hills. With his vast knowledge of the stones being produced in the East African belt and personal relations with independent miners in the region, he is a huge asset to the company and the main source for its products.

Jaimeen Shah

Jaimeen Shah has been based in the United States for the past 4 years now doing trade shows for Prima Gems. Before that he went through 2 years of training in the Prima Gems buying Office in Arusha, Tanzania where he was involved in studying and procuring material at the right prices for Prima Gems’ clients. He also had 2 years of training at the Prima Gems’ manufacturing offices in Jaipur, India where he learned the various aspects of cutting and polishing rough gemstones. He was also involved in our Tsavorite mining operations in 2007 when Prima Gems co-owned the Lemshuko Tsavorite Mines in Tanzania. With about 10 years of experience in the Gem and Jewelry field, Jaimeen runs Prima Gems USA and is based in New York, USA.

Mileen Shah
Manufacturing Manager

Mileen Shah is responsible for fulfilling any special orders that come in from our New York office. He is based primarily in India but travels to Sri Lanka , Tanzania, and Mozambique to source material for our production facilities. He oversees the calibrated material production as well as the beautiful gemstone carvings we display at select trade shows. Mileen travels to the United States throughout the year for our major wholesale trade shows.

Geoffrey Sim
Show and Sales Manager

Geoffrey Sim is a native New Yorker who completed pediatric residency and is a trained pediatrician. His interest in the gemstone business began in 2006 and he has accumulated gemstone knowledge through “hands on” experience supplemented with online research and several gemstone textbooks. His base is New York where he works alongside Jaimeen in the office and at trade shows across the country. He enjoys pencil sketching and scale model building as hobbies which further develop his eye for detail which is important in the gemstone and jewelry business.