Cairngorm — may refer to:* Cairngorm Mountain Railway * Cairngorms National Park, national park in Scotland * Cairngorms, mountain range in the Scottish Highlands * Cairn Gorm, mountain in the Scottish Highlands * Smoky quartz, aka Cairngormstone * Cairngorm … Wikipedia
Morion (minéral) — Quartz fumé Quartz fumé Catégorie III : oxydes et hydroxydes Quartz Fumé Massif du Mont Blanc Haute Savoie, France (15x10cm) … Wikipédia en Français
Smoky quartz — Smoky or smokey quartz is a brown to black variety of quartz.[1] Like other quartz gems, it is a silicon dioxide crystal. The smoky colour results from free silicon, formed from the silicon dioxide by natural irradiation … Wikipedia
smoky quartz — a smoky yellow to dark brown or black variety of quartz, used as a gem. Also called cairngorm, Cairngorm stone. [1830 40] * * * Common, coarse grained variety of quartz that ranges in colour from nearly black through smoky brown. No distinct… … Universalium
Important gemstones — ▪ Table Important gemstones mineral gem name colour Mohs hardness* specific gravity* beryl aquamarine sky blue to greenish blue 7½–8 2.68–2.71 emerald green 2.68–2.74 goshenite colourless; greenish yellow, yellow green, brownish same as… … Universalium
Quartz enfumé — Quartz fumé Quartz fumé Catégorie III : oxydes et hydroxydes Quartz Fumé Massif du Mont Blanc Haute Savoie, France (15x10cm) … Wikipédia en Français
Quartz fumée — Quartz fumé Quartz fumé Catégorie III : oxydes et hydroxydes Quartz Fumé Massif du Mont Blanc Haute Savoie, France (15x10cm) … Wikipédia en Français
Topaze fumé — Quartz fumé Quartz fumé Catégorie III : oxydes et hydroxydes Quartz Fumé Massif du Mont Blanc Haute Savoie, France (15x10cm) … Wikipédia en Français
topaz — topazine /toh peuh zeen , zin/, adj. /toh paz/, n. 1. a mineral, a fluosilicate of aluminum, usually occurring in prismatic orthorhombic crystals of various colors, and used as a gem. 2. citrine (def. 2). 3. either of two South American… … Universalium
Amethyst — Infobox mineral name = Amethyst category = Mineral variety boxwidth = boxbgcolor = imagesize = caption = formula = Silica (silicon dioxide, SiO2) molweight = color = violet habit = 6 sided prism ending in 6 sided pyramid (typical) system =… … Wikipedia