MCP server
Digital Gemology: gem identification and gemstone properties
By digitalgemologyAll Digitalgemology servers
Identify gemstones by refractive index, birefringence, SG, pleochroism and spectrum. Compare 7 gems
Listed on
First seen 1 Nov 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
1
Directories
Collected by InvokeRank
4
Tools
From an anonymous probe
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Tools
| Tool | Description | Behaviour |
|---|---|---|
| absorption_spectrum | What a hand spectroscope shows for one gemstone: each absorption line and band with its position in nanometres, its cause (for example Cr3+ in ruby) and what it looks like, from Digital Gemology's Spectroscope or, for the stones it does not model, published references. | Read-only |
| compare_gemstones | Two gemstones side by side, and the tests that tell them apart: refractive index, birefringence (doubling of back facets, polariscope), specific gravity, dispersion (fire), hardness, pleochroism and spectrum, each with the free tool that shows it. For questions like 'how do I tell diamond from moissanite?'. | Read-only |
| gem_properties | Everything Digital Gemology has on one gemstone: refractive index (both rays for doubly refractive stones), birefringence, dispersion, specific gravity, hardness, crystal system, critical angle, what a refractometer, polariscope and dichroscope show, its pleochroic colors and the lines and bands a hand spectroscope shows, with links to the free tools. For the seven stones our tools model the values are the tools' own; for the others they are published reference values, with their sources. | Read-only |
| identify_gem | Match a stone's test readings against the 36 gemstones in Digital Gemology's data and rank them, saying which reading fits and which does not. Give any of: refractive index, birefringence, specific gravity, optic character, pleochroism, a spectrum line, or that the refractometer read over the limit. A match is a lead, not an identification. | Read-only |
| Directory | Listing | Tier | First seen |
|---|---|---|---|
| Official MCP Registry | Digital Gemology: gem identification and gemstone properties | - | 1 Nov 2026 |