Violet/Purple Crystals - Statistics

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This quiz has been taken 58 times
The average score is 2 of 6

Answer Stats

Description	Answer	% Correct
Favoured by royalty; variety quartz coloured by iron; comes from the Greek for "not drunken"	Amethyst	98%
Important in industrial processes like glass- and steel- making; found in a variety of colors but most common on purple; first mineral to show fluorescent under certain lighting and gave its name to that phenomenon	Fluorite	48%
Originates from the region of the River Chara in Siberia; found in alkaline igneous rocks; polishing shows swirling purple and white cloud-like structures; can have inclusions of black aegerine	Charoite	31%
AKA "water sapphire"; commonly found in sedimentary gneisses; views from different angles display different colours; inclusions of haematite turn some varieties red; other color varieties include brown or blue-gray	Iolite	19%
Formed in the volcanic rock syenite; first found in Japan; trade names include "Royal Azel", "lavulite", and " "luvulite"; good for cutting and polishing	Sugilite	19%
Has a soft sheen of tightly arranged, fibrous crystals; uncommon; principal sources are in Namibia, Rwanda, and USA; sometimes cut into cabochons to display its rich colour and appealing texture	Purpurite	6%

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