{
  "api": "gemstones",
  "title": "Gemstones",
  "description": "Popular gemstones with typical color, Mohs hardness, crystal system, and precious classification.",
  "emoji": "💎",
  "license": "GPL-2.0-or-later",
  "count": 31,
  "self": "https://gratisapi.com/api/gemstones/index",
  "endpoints": {
    "list": "https://gratisapi.com/api/gemstones/index",
    "item": "https://gratisapi.com/api/gemstones/{id}"
  },
  "fields": [
    "color",
    "crystal_system",
    "id",
    "mohs_hardness",
    "name",
    "type"
  ],
  "results": [
    {
      "id": "diamond",
      "name": "Diamond",
      "color": "Colorless",
      "mohs_hardness": 10.0,
      "crystal_system": "Cubic",
      "type": "Precious",
      "url": "https://gratisapi.com/api/gemstones/diamond"
    },
    {
      "id": "ruby",
      "name": "Ruby",
      "color": "Red",
      "mohs_hardness": 9.0,
      "crystal_system": "Trigonal",
      "type": "Precious",
      "url": "https://gratisapi.com/api/gemstones/ruby"
    },
    {
      "id": "sapphire",
      "name": "Sapphire",
      "color": "Blue",
      "mohs_hardness": 9.0,
      "crystal_system": "Trigonal",
      "type": "Precious",
      "url": "https://gratisapi.com/api/gemstones/sapphire"
    },
    {
      "id": "emerald",
      "name": "Emerald",
      "color": "Green",
      "mohs_hardness": 7.5,
      "crystal_system": "Hexagonal",
      "type": "Precious",
      "url": "https://gratisapi.com/api/gemstones/emerald"
    },
    {
      "id": "amethyst",
      "name": "Amethyst",
      "color": "Purple",
      "mohs_hardness": 7.0,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/amethyst"
    },
    {
      "id": "aquamarine",
      "name": "Aquamarine",
      "color": "Pale blue",
      "mohs_hardness": 7.5,
      "crystal_system": "Hexagonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/aquamarine"
    },
    {
      "id": "topaz",
      "name": "Topaz",
      "color": "Golden yellow",
      "mohs_hardness": 8.0,
      "crystal_system": "Orthorhombic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/topaz"
    },
    {
      "id": "opal",
      "name": "Opal",
      "color": "Iridescent",
      "mohs_hardness": 5.5,
      "crystal_system": null,
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/opal"
    },
    {
      "id": "garnet",
      "name": "Garnet",
      "color": "Deep red",
      "mohs_hardness": 7.0,
      "crystal_system": "Cubic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/garnet"
    },
    {
      "id": "peridot",
      "name": "Peridot",
      "color": "Lime green",
      "mohs_hardness": 6.75,
      "crystal_system": "Orthorhombic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/peridot"
    },
    {
      "id": "turquoise",
      "name": "Turquoise",
      "color": "Blue-green",
      "mohs_hardness": 5.5,
      "crystal_system": "Triclinic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/turquoise"
    },
    {
      "id": "tourmaline",
      "name": "Tourmaline",
      "color": "Various",
      "mohs_hardness": 7.25,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/tourmaline"
    },
    {
      "id": "citrine",
      "name": "Citrine",
      "color": "Yellow",
      "mohs_hardness": 7.0,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/citrine"
    },
    {
      "id": "jade",
      "name": "Jade",
      "color": "Green",
      "mohs_hardness": 6.5,
      "crystal_system": "Monoclinic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/jade"
    },
    {
      "id": "lapis-lazuli",
      "name": "Lapis Lazuli",
      "color": "Deep blue",
      "mohs_hardness": 5.5,
      "crystal_system": "Cubic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/lapis-lazuli"
    },
    {
      "id": "onyx",
      "name": "Onyx",
      "color": "Black",
      "mohs_hardness": 7.0,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/onyx"
    },
    {
      "id": "pearl",
      "name": "Pearl",
      "color": "White",
      "mohs_hardness": 2.75,
      "crystal_system": null,
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/pearl"
    },
    {
      "id": "moonstone",
      "name": "Moonstone",
      "color": "White sheen",
      "mohs_hardness": 6.0,
      "crystal_system": "Monoclinic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/moonstone"
    },
    {
      "id": "zircon",
      "name": "Zircon",
      "color": "Various",
      "mohs_hardness": 7.5,
      "crystal_system": "Tetragonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/zircon"
    },
    {
      "id": "spinel",
      "name": "Spinel",
      "color": "Red to pink",
      "mohs_hardness": 8.0,
      "crystal_system": "Cubic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/spinel"
    },
    {
      "id": "tanzanite",
      "name": "Tanzanite",
      "color": "Blue-violet",
      "mohs_hardness": 6.5,
      "crystal_system": "Orthorhombic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/tanzanite"
    },
    {
      "id": "malachite",
      "name": "Malachite",
      "color": "Green",
      "mohs_hardness": 3.75,
      "crystal_system": "Monoclinic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/malachite"
    },
    {
      "id": "agate",
      "name": "Agate",
      "color": "Banded",
      "mohs_hardness": 7.0,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/agate"
    },
    {
      "id": "jasper",
      "name": "Jasper",
      "color": "Various",
      "mohs_hardness": 7.0,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/jasper"
    },
    {
      "id": "carnelian",
      "name": "Carnelian",
      "color": "Orange-red",
      "mohs_hardness": 7.0,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/carnelian"
    },
    {
      "id": "aventurine",
      "name": "Aventurine",
      "color": "Green",
      "mohs_hardness": 7.0,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/aventurine"
    },
    {
      "id": "rose-quartz",
      "name": "Rose Quartz",
      "color": "Pink",
      "mohs_hardness": 7.0,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/rose-quartz"
    },
    {
      "id": "smoky-quartz",
      "name": "Smoky Quartz",
      "color": "Brown-gray",
      "mohs_hardness": 7.0,
      "crystal_system": "Trigonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/smoky-quartz"
    },
    {
      "id": "morganite",
      "name": "Morganite",
      "color": "Pink-peach",
      "mohs_hardness": 7.5,
      "crystal_system": "Hexagonal",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/morganite"
    },
    {
      "id": "alexandrite",
      "name": "Alexandrite",
      "color": "Color-changing",
      "mohs_hardness": 8.5,
      "crystal_system": "Orthorhombic",
      "type": "Precious",
      "url": "https://gratisapi.com/api/gemstones/alexandrite"
    },
    {
      "id": "labradorite",
      "name": "Labradorite",
      "color": "Iridescent gray",
      "mohs_hardness": 6.5,
      "crystal_system": "Triclinic",
      "type": "Semi-precious",
      "url": "https://gratisapi.com/api/gemstones/labradorite"
    }
  ]
}