Official MCP RegistryListed
Digital Gemology: gemstone and diamond cut library
Gemstone and diamond cuts: ray-traced brilliance, fire and sparkle in 7 gems, 3D and faceting files
First seen 31 Oct 2026. Evidence as of 7 Nov 2026.
8
Tools
From an anonymous probe
1
Source listings
Each with its own history
12
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| best_cuts_for_gemstone | The top ten brilliants and the top ten jewelry cuts in one gemstone, ranked by brilliance, fire and scintillation added together, with the stone's optical constants. | Read-only |
| compare_cuts | Two cuts side by side in one gemstone: overall, brilliance, fire, scintillation, tilt, face-up spread and leakage from the Cut Performance Index, each cut's place in that stone, facets and size, and the products with prices and checkout links. For questions like 'oval or pear for my sapphire?'. | Read-only |
| cut_in_gemstone | How one cut performs in one gemstone: its headline, eight measured scores against the T73 round brilliant in the same stone, and its pros and cons. For questions like 'is an oval a good cut for sapphire?'. | Read-only |
| get_cut | Everything about one cut: what it is, measured specifications (facets, angles, depth, size, index gear), brilliance, fire and scintillation in all seven gemstones against the T73, the products with prices and checkout links, its questions and answers, and its page. | Read-only |
| get_cut_scores | Scores from the Digital Gemology Cut Performance Index for every cut we sell: overall, brilliance, fire, scintillation, tilt, symmetry, spread, shape-norm and leakage, ray traced separately in diamond, moissanite, cubic zirconia, ruby, sapphire, emerald and amethyst, with each cut's place in its material. Filter by cut, category or material; with no filter, every row. Figures are unrounded. Never compare or rank scores across materials. Ruby and sapphire share one refractive index, so the same figures. Cuts not yet scored come with the reason. | Read-only |
| list_gemstones | The seven gemstones every cut is measured in, with refractive index, critical angle, dispersion, hardness and specific gravity, and the three best cuts of each kind. | Read-only |
| recommend_cut | The best cuts in one gemstone for what matters to the buyer: overall light performance, brilliance, fire, scintillation (sparkle), spread (looks bigger for its weight), tilt (stays bright when tilted) or leakage (least light lost). Filter by family or outline. Returns a ranked short list with each cut's page and checkout links. | Read-only |
| search_cuts | Search Digital Gemology's gem cuts and Platonic solids by name, style, shape or use (for example 'square step cut', 'round brilliant for moissanite', 'historic cushion', 'pear'). Returns each match with its page, facets, size and price; get_cut gives the checkout links. Give a gemstone to add the cut's brilliance, fire and scintillation in that stone and to sort by them. | Read-only |
Change history
- search_cuts: input schema changed
- search_cuts: description changed (+"size" +"price; get_cut gives the" -"size, price")
- search_cuts: input schema changed
- recommend_cut: tool added
- get_cut_scores: input schema changed
- get_cut_scores: description changed (+"diamond, moissanite, cubic zirconia, ruby, sapphire, emerald" +"amethyst," +"Ruby and sapphire share one refractive index, so the same figures.")
- compare_cuts: tool added
- server instructions changed (+"all seven stones;" +"Use compare_cuts for two cuts side by side and recommend_cut for the best cuts in a stone by what the buyer cares about." -"diamond and in moissanite;")
- Repository changed (registry)
- Name changed from "Digital Gemology cut library" to "Digital Gemology: gemstone and diamond cut library" (registry)
- Description changed (registry)
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | com.digitalgemology/cut-library | 31 Oct 2026 | 7 Nov 2026 | 2 |