Rare Gemstones of
Exceptional Provenance
Over seventeen years of direct relationships with Tanzanian miners and Colombian emerald dealers. Every stone hand-selected, certified, and documented — for collectors, jewellers, and trade partners worldwide.
From Our Collection
Shop with Confidence
Browse certified stones with transparent pricing. Filter by gem, origin, and lab. WhatsApp checkout for instant service.
Browse the ShopWholesale Access
Full inventory list, availability, wholesale pricing on request. Request memo terms or arrange a viewing in Bangkok.
Enter Trade PortalSeventeen Years of Gemological Trust
Founded in Bangkok in 2009, Shub International Co., Ltd. was built on a single principle: direct access to the world's finest gem-producing regions. Our partnerships in the Merelani Hills of Tanzania and the Muzo Valley of Colombia give us the provenance chain that the market demands.
We do not speculate. We source, certify, and document. Every stone passes through GIA, GRS, or AIGS before reaching our collection — giving buyers the confidence of independent verification.
From our Silom Road office in Bangkok's Jewelry Trade Center, we serve retail clients, wholesale buyers, and custom design partners across Southeast Asia, Europe, and North America.
What Buyers Say
I've sourced stones from several Bangkok dealers. The difference with Shub is the paperwork — every detail on the GIA certificate matched exactly what I received, and the provenance chain was fully documented.
As a jewellery designer I need my clients to trust the stones I set. The GRS origin report on the Colombian emerald Devan sourced for me made the sale — my client appreciated having independent verification.
We've been buying sapphire parcels from Bangkok for over a decade. The level of transparency here — treatment disclosure, full certs, consistent quality — is genuinely exceptional for the price point.
Every Stone Independently Verified
Learn Before You Buy
Our guides cover everything from reading a GIA certificate to understanding the difference between Muzo and Chivor Colombian emeralds.
Explore the Guides