Identify 36 gems by refractive index, birefringence, SG, pleochroism and spectrum; cut scores in 30
Free
4 servers across lifestyle & local, learning & documentation and design & media. The largest is Digital Gemology: gem identification and gemstone properties.
Lifestyle & Local · Learning & Documentation · Design & Media
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graded from the tools they list, not from code
4 MCP servers. 4 of 4 are free to start.
DI
Gemology glossary: grading report terms, 4 Cs, clarity, colored gemstones, how sparkle is measured
Free
DI
Gemology lessons to search and quote: the 4 Cs, diamond anatomy, grading reports, moissanite
Free
Gemstone and diamond cuts: ray-traced brilliance, fire and sparkle in 26 gems, 3D and faceting files
Free
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The rest either hold an API key issued by the publisher or ask for nothing.
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