Purple crystals
You know the colour you want. The hard part is knowing which stone actually owns it.
Purple crystals are not one stone. 31 different minerals show up purple here, Alexandrite, Amethyst and Ametrine among them. Colour is the easiest thing to fake, so it is the worst way to name a stone. Every entry below gives you the test that settles it.
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Point your camera at it. You will get a name, a real-or-fake verdict and what it means for your chart, in seconds.
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- Alexandrite8.5 Mohs · chrysoberyl · heart, crownAlexandrite should not exist. Beryllium collects in granite pegmatites, near the top of the crust. Chromium belongs to ultramafic rock…
Amethyst7 Mohs · quartz · third-eye, crownAmethyst started out as ordinary quartz. A trace of iron got caught in it, and the faint natural radiation of the rock around it worked…
Ametrine7 Mohs · quartz · solar-plexus, third-eye, crownIt is one crystal wearing two colours. Purple at one end, gold at the other, grown that way underground. The tell is the seam. Natural…
Angelite3.5 Mohs · sulphate · throat, third-eye, crownAngelite is a salt left behind where an ancient sea dried up. Burial and heat drove the water out of it. It wants that water back. Leave…
Aura Quartz7 Mohs · quartz · crown, third-eye, throatThe quartz is real. It grew in rock like any other piece. Then a person put it in a vacuum chamber and bonded a film of vaporised metal…
Bismuth2-2.5 Mohs · man-made · crown, third-eyeA person made this one. Bismuth metal gets melted at around 271 degrees, cooled slowly so it grows in stepped squares, then the liquid…
Blue Apatite5 Mohs · phosphate · throat, third-eyeBlue apatite is the mineral your teeth are made of. Your bones too. One version grows in cooling rock, the other grows in you. The name…
Blue Goldstone5-6 Mohs · man-made · third-eye, crownItalian glassmakers built this on purpose. Cobalt glass, melted with copper, cooled slow in a sealed pot so the copper had time to grow…
Blue Kyanite4.5-7 Mohs · silicate · throat, third-eyeKyanite needs burial to exist. Clay rich rock gets pushed down and squeezed until the aluminium in it grows into blue blades. It came…
Blue Lace Agate6.5-7 Mohs · chalcedony · throatThe message is typed. You have read it four times and it is still sitting there. Blue lace agate built up in a lava cavity the same way…
Botswana Agate6.5-7 Mohs · chalcedony · crown, sacralBotswana agate built itself inside bubbles in old lava. Water came in, left a layer, dried, came back. Every grey and pink line is one…- Chalcedony6 to 7 Mohs · quartz · throatChalcedony is quartz that never grew up into crystals. Instead of one clear six sided prism, it is billions of quartz fibres, each…
Charoite5-6 Mohs · silicate · third-eye, crownCharoite comes from one place on earth. A hot alkaline body pushed into limestone in Siberia and cooked it, and the rock came out violet…
Fluorite4 Mohs · halide · third-eye, throat, heartFluorite survives almost nothing. A steel knife cuts it. One knock splits it clean along a flat plane, and long sun pulls the purple…
Garnet6.5-7.5 Mohs · silicate · root, sacralGarnet grew inside rock that was being crushed. Heat and pressure squeezed the root of a mountain, and the garnet crystallised in the…
Howlite3.5 Mohs · silicate · crown, third-eyeSomeone dyed it blue and sold it as turquoise. That is not gossip. It is the trade's default move. Howlite formed in old salt flats…
Iolite7-7.5 Mohs · silicate · third-eye, throatOld seabed mud got buried under a mountain and cooked until it came out as a different mineral. Turn it under one lamp. Violet blue from…
Jadeite Jade6-7 Mohs · silicate · heartIn China, jade has stood for virtue for thousands of years. Not luck. Virtue. Mesoamerican carvers valued it above gold. Most fine…
Kunzite6.5-7 Mohs · silicate · heartLight takes the colour out of it. Leave kunzite on a bright sill and the pink drains away, quite fast, and it never comes back. It grew…
Lapis Lazuli5-6 Mohs · rock (aggregate) · third-eye, throatLimestone got cooked where hot magma pushed into it, and parts of it came out deep blue. One valley in Afghanistan has been mined for it…
Lepidolite2.5-3 Mohs · silicate · heart, third-eye, crownSomebody told you this one holds lithium. It does. The lithium is locked into the rock and it stays there. It cannot reach your blood…
Mookaite6-7 Mohs · chalcedony · root, sacral, solar-plexusMookaite is made of animals. Sea plankton with glass shells died in their billions on an old seafloor, and the silica of those shells…
Morganite7.5-8 Mohs · silicate · heartAlmost every morganite in a case went into an oven at about four hundred degrees. The heat pulls the yellow out and leaves a cleaner…
Opalite5.5-6 Mohs · man-made · crown, third-eyeSomebody made this in a furnace. Molten glass with a little tin and titanium stirred in to scatter the light blue, then poured and…
Rainbow Obsidian5-6 Mohs · volcanic glass · root, third-eyeIt is glass. The lava cooled too fast for crystals to form, so nothing inside got to finish growing. Almost nothing. Tiny rods of…- Sapphire9 Mohs · corundum · throat, third-eyeSapphire and ruby are the same mineral. Both are corundum, aluminium oxide, and what separates them is a trace of something that should…
Spectrolite6-6.5 Mohs · feldspar · third-eye, crownSpectrolite is labradorite. A Finnish quarry found the darkest material anyone had seen. They gave it a name of its own. The name is the…
Spirit Quartz7 Mohs · quartz · crown, third-eyeHold it up. Hundreds of small crystals stand off one big one, pointing every way at once. That is a second life. The first crystal…
Sugilite5.5-6.5 Mohs · silicate · third-eye, crownSugilite grew slowly in rock deep underground. Nearly every purple piece in the world came out of one South African mine. There is not…- Synthetic Opal4.5-6.5 Mohs · man-made · crown, heartSomebody built this on purpose. Spheres finer than dust were settled into stacked layers and pressed solid. It is real opal, grown in a…
Tanzanite6-7 Mohs · silicate · third-eye, crown, throatTanzanite came out of one small patch of hills in northern Tanzania in 1967. There is nowhere else on earth. It does not come out blue…
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