About
Global Bridge
What we do
We source natural coloured gemstones to buyers’ specifications and supply them internationally. That covers single stones, matched pairs and sets, calibrated goods for production, parcels and lots, layouts, and rough material.
Most of what we are asked for does not sit on a shelf. A requirement arrives as a specification — species, colour band, dimensions, quantity, quality floor — and the work is finding the stones that meet it, checking them against the brief, and showing the buyer what actually matches.
We are a trade supplier. Our customers are businesses buying to manufacture, to design, to stock or to resell, and the site is built for how they buy rather than for browsing.
Where we sit
Rough from mines across Africa, Asia and South America is brought to Thailand to be cut, treated and traded. The coloured stone side of that business is concentrated in the Bang Rak district of central Bangkok, around the meeting of Silom and Mahesak Roads, where cutters, dealers, brokers and gemmological laboratories sit within a few streets of each other.
Our office is on Mahesak Road, inside that district. A requirement can be walked around the trade rather than emailed at it, and stones can be looked at in person before anything is sent.
How we describe stones
Treatment, origin and laboratory reports are recorded per stone, never assumed from the species. If a stone’s record does not state that it is unheated, untreated, or from a particular country, we do not say that it is.
Where origin is given, it is given with how well supported it is — stated on a laboratory report, stated by the supplier, or indicative. Unqualified origin claims are one of the commonest sources of dispute in this trade and we would rather not contribute to it.
Where a stone carries a laboratory report, we supply it and name the laboratory. Naming a laboratory means that document exists — it does not imply any affiliation with or endorsement by that laboratory, and no dealer should suggest otherwise.
How we work
Three things we hold to
01
Specification before price
A quote given before the stones are identified is a range, not a price. We find the stones first.
02
Show, then tell
Images and video of the actual stones, not a description of a category. Video for anything where movement matters.
03
Disclose per stone
Treatment and origin come from the individual stone's record and documentation, never from what is usual for the species.
Get in Touch
Tell us the stone.We’ll source to the specification.
Send the species, colour, shape, size, treatment and quantity — as much of the specification as you have.