Certification
Reading Gemstone Laboratory Reports
What a report certifies, what it deliberately does not, and the wording that separates a fact from an opinion.
6 min read
Journal
Notes for professional buyers
Working guidance on specification, treatment and documentation. Written for people who buy stones for a living — a small number of substantial pieces rather than a large number of thin ones.
All articles
Manufacturing
Buying Gemstone Parcels for Jewellery Manufacturing
Per-carat and per-piece pricing describe the same parcel very differently. How to work out what you are actually buying.
5 min read
Manufacturing
How Calibrated Gemstones Are Specified
Calibration is about repeatability, not just size. What to send a supplier so the second delivery matches the first.
6 min read
Treatment
Understanding Heated and Unheated Sapphire
What heat treatment is, why almost all commercial sapphire has had it, and when paying for the alternative is worth it.
7 min read
Sourcing
How Professional Buyers Submit Gemstone Requirements
The difference between a requirement that gets filled in two days and one that takes three weeks is usually eight lines of specification.
6 min read
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.