MLchartDataset catalogue

Blue John

Term · Industrial and trades · MLC-T-IND-000643

A rare, banded form of fluorite mineral, typically found in Derbyshire, England, and used for ornamental purposes. Its distinctive purple-blue and yellow-white patterns make it suitable for carving into decorative objects, jewelry, and small architectural elements. This material is prized for its unique coloration and translucency.

Table 1. Record
IdentifierMLC-T-IND-000643
FieldIndustrial and trades
SubjectManufacturing
TranslationsGerman: Blue John; Spanish: mosto azul; French: moût partiellement fermenté
Record as JSON
{
  "id": "MLC-T-IND-000643",
  "term": "Blue John",
  "field": "Industrial and trades",
  "definition": "A rare, banded form of fluorite mineral, typically found in Derbyshire, England, and used for ornamental purposes. Its distinctive purple-blue and yellow-white patterns make it suitable for carving into decorative objects, jewelry, and small architectural elements. This material is prized for its unique coloration and translucency.",
  "subject": "Manufacturing",
  "translations": {
    "de": "Blue John",
    "es": "mosto azul",
    "fr": "moût partiellement fermenté"
  },
  "url": "https://mlchart.com/terminology/industrial/blue-john/"
}

Record 701 of 7,291 in Industrial and trades terminology (MLC-0113). Request the full dataset.