Digital Gemology: gem identification and gemstone properties MCP Server

by digitalgemology Your server? Claim it

answering

Digital Gemology: gem identification and gemstone properties is answering right now. Last checked 5 min ago. It exposes 4 tools. Last commit 1 Nov 2026.

Identify gemstones by refractive index, birefringence, SG, pleochroism and spectrum. Compare 7 gems

Uptime history 46 hours of history

46 hours agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

151 ms

Response time

average over 24h

Stars

last commit 1 Nov 2026

Nothing serious here today

Today is the operative word: we check Digital Gemology: gem identification and gemstone properties every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

Settings → Connectors → Add custom connector, then paste this address

https://digitalgemology.com/mcp/gems

~/.codex/config.toml

[mcp_servers.gem-identification]
url = "https://digitalgemology.com/mcp/gems"

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "gem-identification": {
      "type": "http",
      "url": "https://digitalgemology.com/mcp/gems"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

absorption

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.

compare

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?'.

gem

gem_properties

Everything Digital Gemology measures about 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.

identify

identify_gem

Match a stone's test readings against the seven gemstones Digital Gemology covers 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 among seven stones only, not an identification.

Endpoints

URL	Transport	State	Latency	Checked
https://digitalgemology.com/mcp/gems	streamable-http	answering	138 ms	5 min ago

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Digital Gemology: gem identification and gemstone properties — questions

Answers built from our own checks of this server.

What can Digital Gemology: gem identification and gemstone properties do?

It exposes 4 tools, read directly from the server on our last check. Among them: absorption_spectrum, compare_gemstones, gem_properties, identify_gem. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Digital Gemology: gem identification and gemstone properties working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 151 ms. The bar chart above shows every period we have measured.

How do I connect Digital Gemology: gem identification and gemstone properties?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Digital Gemology: gem identification and gemstone properties need an API key?

No. Digital Gemology: gem identification and gemstone properties completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Digital Gemology: gem identification and gemstone properties?

It answers our handshake in 151 ms on average, which is faster than 83% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Digital Gemology: gem identification and gemstone properties open source?

We cannot say either way: 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.