Digital Gemology: gem identification and gemstone properties

com.digitalgemology/gem-identificationVersion 1.1.0

Identify 36 gems by refractive index, birefringence, SG, pleochroism and spectrum; cut scores in 30

Status

Responds205 msNov 14, 2026, 13:55 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 13:55 UTC
Latency: 205 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://digitalgemology.com/mcp/gemsResponds205 msNov 14, 2026, 13:55 UTC

No sign-in

Claude Code

claude mcp add --transport http gem-identification https://digitalgemology.com/mcp/gems

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: gem-identification
Remote MCP server URL: https://digitalgemology.com/mcp/gems

Cursor

{
  "mcpServers": {
    "gem-identification": {
      "url": "https://digitalgemology.com/mcp/gems"
    }
  }
}

VS Code

code --add-mcp '{"name":"gem-identification","type":"http","url":"https://digitalgemology.com/mcp/gems"}'

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Tools

4 tools

Tools of Digital Gemology: gem identification and gemstone properties
	Description		Read-only	Idempotent	Open world
`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.	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.	No	Yes	Yes	No
`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?'.	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?'.	No	Yes	Yes	No
`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. Also which stone's ray-traced cut scores apply to it (cut_scores_from, cut_scores_url), or why it has none (cut_scores_note).	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. Also which stone's ray-traced cut scores apply to it (cut_scores_from, cut_scores_url), or why it has none (cut_scores_note).	No	Yes	Yes	No
`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.	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.	No	Yes	Yes	No

Details

Registry status: Active
Published: Nov 11, 2026
Updated: Nov 11, 2026
Website: https://digitalgemology.com/about/agents⁠ (opens in a new tab)
Repository: https://github.com/cultrodistro/digitalgemology-mcp⁠ (opens in a new tab)
Categories: Uncategorized
GDPR: Not declared

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