Lithós
Gem Guides
Everything you need to know before buying a certified stone.
Interactive Tool
Diamond Color Scale
Interactive Tool
Spinel Colour Guide
4 min read
What is Pigeon Blood Ruby?
Of all the color grades in the gemstone world, none carries more weight — or more confusion — than Pigeon Blood.
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4 min read
GRS vs GIA vs Gübelin — Which Certificate Actually Matters?
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4 min read
Kashmir Sapphire — Why One Origin Commands the Highest Prices
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5 min read
How to Invest in Colored Gemstones — What Actually Holds Value
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4 min read
Paraiba Tourmaline — The Electric Blue That Changed the Market
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