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io.github.JacobiusMakes/diamond-mcp

io.github.JacobiusMakes/diamond-mcp · v0.2.9

Measured by MCP Station

Description written by the publisher, not verified

Sourced diamond and gemology tools for AI assistants, with 90 encyclopedia entries.

Connect

claude mcp add --transport http diamond-mcp https://diamond-mcp.stienhardt.workers.dev/mcp

{
  "mcpServers": {
    "diamond-mcp": {
      "url": "https://diamond-mcp.stienhardt.workers.dev/mcp"
    }
  }
}

Tools as reported by the server

• compare_diamonds
  Compare two to five diamonds from any seller using supplied carat, measured millimeters and prices. Returns ratios, price per carat, differences and missing information. Never verifies specifications, ranks beauty, appraises value or declares a best diamond. Prices must use explicit currencies; mixe
• verify_diamond_report
  Returns the official verification URL and a three step checklist for confirming a diamond grading report with the lab that issued it. Supports GIA, IGI, and GCAL. This tool never verifies anything itself. It tells you where and how.
• faceup_size
  Approximate face up millimeter dimensions for a diamond of a given shape and carat weight. Supported shapes: round, oval, emerald, dutch_marquise. Scales vetted 1 carat anchors by the cube root of the carat weight. Typical proportions, not a guarantee: verify a specific stone on its grading report.
• dutch_marquise_definition
  The published definition of the Dutch Marquise diamond cut: geometry, certificate wording, and the measured length to width ratio of a certified reference stone. A Dutch Marquise is an elongated hexagonal cut diamond.
• lab_grown_grading_landscape
  The current state of who grades Lab Grown Diamonds and how: GIA, IGI, HRD Antwerp, and the FTC position. Every item carries a source and a date.
• lab_grown_price_index
  The latest tracked retail price reading for Lab Grown Diamonds, with source and date. Market context for shoppers, not investment guidance.
• about_stienhardt
  Plain fact sheet about Stienhardt, the New York City Lab Grown Diamond brand that publishes this server. Every fact carries a source and a date.
• define
  Look up a single diamond or gemology term in the encyclopedia of 90 fact-checked and sourced entries. Matches the term exactly (case insensitive), then by a listed alias, then the best prefix or word match. Returns the full entry: definition, body, sourced claims, and related terms. If nothing match
• search_encyclopedia
  Keyword search across the 90 entry diamond and gemology encyclopedia. Ranks case insensitive keyword hits by field, weighting the term above the definition above the body. Returns the best matches as term, category, and a definition snippet. Use define to fetch a full entry.
• search_inventory
  Search Stienhardt's public Shopify catalog of engagement ring settings and fine jewelry (New York, direct). Loose-diamond stock cannot be verified here; those searches return public catalog listings flagged availability_verified false plus a storefront browsing link. Returns public catalog prices, s
• get_product
  Full detail for one Stienhardt product by id (as returned by search_inventory): title, price, availability, options, images, and the product URL on stienhardt.com. Loose-diamond availability is not verified.

Repository · Website · JSON · Text for agents · Registry updated 2026-09-09