Precious6 color varieties
Diamond
Mohs 10
Amsterdam archive · Bangkok network
The Gemstone
Vault.
Explore the principal precious, semi-precious and organic gemstone families. Open any stone for a full long-tail guide, its natural color varieties, care profile, sourcing questions, and a bespoke inquiry path.
25 families · 140+ color varieties
The complete color library
Choose a stone family.
Precious
Precious7 color varieties
Sapphire
Mohs 9
Precious5 color varieties
Ruby
Mohs 9
Precious5 color varieties
Emerald
Mohs 7.5–8
Semi-precious4 color varieties
Alexandrite
Mohs 8.5
Semi-precious5 color varieties
Amethyst
Mohs 7
Semi-precious5 color varieties
Aquamarine
Mohs 7.5–8
Semi-precious5 color varieties
Citrine
Mohs 7
Semi-precious6 color varieties
Garnet
Mohs 6.5–7.5
Semi-precious5 color varieties
Peridot
Mohs 6.5–7
Semi-precious6 color varieties
Topaz
Mohs 8
Semi-precious6 color varieties
Tourmaline
Mohs 7–7.5
Semi-precious6 color varieties
Opal
Mohs 5.5–6.5
Semi-precious6 color varieties
Moonstone
Mohs 6–6.5
Semi-precious5 color varieties
Tanzanite
Mohs 6–7
Semi-precious6 color varieties
Spinel
Mohs 8
Semi-precious6 color varieties
Zircon
Mohs 6.5–7.5
Semi-precious5 color varieties
Morganite
Mohs 7.5–8
Semi-precious6 color varieties
Jade
Mohs 6–7
Semi-precious5 color varieties
Turquoise
Mohs 5–6
Semi-precious4 color varieties
Lapis Lazuli
Mohs 5–5.5
Semi-precious5 color varieties
Onyx
Mohs 6.5–7
Semi-precious6 color varieties
Agate
Mohs 6.5–7
Semi-precious6 color varieties
Quartz
Mohs 7
Organic6 color varieties
Pearl
Mohs 2.5–4.5
Looking for a rare origin or unusual color?
Our Bangkok studio can source, test, recut and set beyond this core library.