{
  "ball": {
    "category": "single-convex",
    "materials": {"glass": 1.5}
  },
  "ball_coloured": {
    "category": "single-convex",
    "materials": {"glass": 1.5}
  },
  "cube": {
    "category": "single-convex",
    "materials": {"glass": 1.5}
  },
  "cube_coloured": {
    "category": "single-convex",
    "materials": {"glass": 1.5}
  },
  "diamond": {
    "category": "single-convex",
    "materials": {"diamond": 2.418}
  },
  "cylinder": {
    "category": "single-convex",
    "materials": {"glass": 1.5}
  },
  "cylinder_coloured": {
    "category": "single-convex",
    "materials": {"glass": 1.5}
  },
  "pyramid": {
    "category": "single-convex",
    "materials": {"glass": 1.5}
  },
  "pyramid_coloured": {
    "category": "single-convex",
    "materials": {"glass": 1.5}
  },
  "candle_holder": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "cat": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "cola": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "cow": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "crystal_vase": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "demijohn_vase": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "dog": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "fox": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "generic_sculpture": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "Korken_jar": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "light_bulb": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "magnifier": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "man_sculpture": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "monkey": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "sleeping_dragon": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "teapot": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "torus": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "torus_coloured": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "Vardagen_jar": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "woman_sculpture": {
    "category": "single-non-convex",
    "materials": {"glass": 1.5}
  },
  "ampoule": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "beaker": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "conical_flask": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "flower_vase": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "graduated_cylinder": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "household_item_set": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "lab_equipment_set": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "perfume_red": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "perfume": 1.46}
  },
  "perfume_yellow": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "perfume": 1.46}
  },
  "plastic_bottle": {
    "category": "multiple-non-convex",
    "materials": {"plastic": 1.45, "water": 1.333}
  },
  "reed_diffuser": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "round_bottom_flask": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "skull_bottle": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "alcohol": 1.36}
  },
  "star_shaped_bottle": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "syringe": {
    "category": "multiple-non-convex",
    "materials": {"plastic": 1.45, "water": 1.333}
  },
  "teacup": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "test_tube": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "vial": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  },
  "water_pitcher": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333, "ice": 1.309}
  },
  "wine_glass": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "alcohol": 1.36}
  },
  "wisolt_kettle": {
    "category": "multiple-non-convex",
    "materials": {"glass": 1.5, "water": 1.333}
  }
}