Learn
Plain explanations of the terms that appear on every listing, written to help you buy correctly rather than to sell you anything.
Heat treatment in sapphire: what the value on a listing means
How heating changes sapphire, why the trade accepts it, and why an unheated claim needs a laboratory document.
Updated 2026-09-22
Reading a coloured stone laboratory report
What a corundum report does and does not tell you: identity, treatment, origin opinion, and the limits of each.
Updated 2026-09-22
How supplier inventory reaches the catalog
The hourly import, validation, quarantine, media requirements and the difference between supplier availability and platform availability.
Updated 2026-09-22