find your

Perfect Gemstone

discover our collection of the finest Rubies and Sapphires,
calibrated sizes as well as single gemstones

Who We Are

At Ko Thai Impex, we are committed to helping you find the gem you desire.

With over 35 years of experience, our mission is to provide our customers with the highest quality gemstones at competitive prices. We believe that everyone deserves to find their perfect gemstone, and our team of experts is dedicated to helping you do just that. Whether you're a jewelry maker, a gemstone collector, or simply looking for a unique piece, we have the expertise to help you find the perfect gemstone to suit your needs.

Sandeep Garg

Founder & Managing Director

Siddhant Garg


Find us at

Upcoming Exhibitions

What we do

Crafting beautiful gemstones is what we do, through an established process that's trusted by hundreds of customers worldwide!


We work alongside our Auction Partners - Gemfields and Fura to source raw rough stones. We also have a vast network of suppliers and marketers who help us bring any desired stone or parcel to you.

Layouts and Certification

Our team also specializing in sourcing and creating layouts that you may have in mind. Our assortment allows us to quickly find a similar color/quality gemstone layout of your liking. Most single stones we carry are certified by our trusted laboratories before presented to our clients.

Manufacturing & Assortment

Our process to bring the end product to the market involves manufacturing at our factory and assorting goods as they arrive. Behind which, we have a skillful team of assorters, that will work toward providing the best assortment of stones varying in color, quality, shape, and size. We assort goods from melee sizes up to single stones.

Shipping & Logistics

We deliver your products right at your doorstep, wherever you are in the world! Shipping and logistics is taken care of by our trusted vendors: Brinks, Malca Amit and Ferrari.

Genuine & Certified

Our Lab Partners

I had been searching for a perfect ruby for months, and Ko Thai Impex fulfilled my request. The quality of their gemstones were top-notch and the price was unbeatable. I will definitely be coming back for any future gemstone needs!

John Markel Tucson, United States

I have a 20 year old gemstone business and Ko Thai Impex have been our biggest suppliers and supporters. Their attention to detail is unmatched and their team is always there to help. I highly recommend this company to anyone in the market for high-quality gemstones.

Sarah Bangkok, Thailand

The quality of their gemstones is exceptional, and they always go above and beyond to provide the best service. I really appreciate the personalized attention they give! And of course, their prices are very fair and unmatched.

Johann Micyllus Frankfurt, Germany

Contact Us

How can we help you?

Ko (Thai) Impex Co Ltd.

[email protected]

202 Sithikorn Bldg., Mahaesak Soi 2, Suite 604,
Bangkok, Thailand - 10500

+66 26357100
+66 26357102