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Hemimorphite
Hemimorphite is a basic hydrous zinc silicate. It was formally classed alongside Smithsonite as Calamine, until it was discovered that...
Jan 3, 20201 min read
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Amazonite
Amazonite is a pale to dark green to blue-green feldspar. It is named after the Amazon River, although it is not found there. The most...
Jul 5, 20192 min read
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Tourmaline - coloured (not black)
Tourmaline comes in different colours including pink/red (Rubellite), green (Verdelite), Watermelon, blue (Indicolite) or yellow/brown...
Dec 7, 20182 min read
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Iolite
Iolite is a magnesium aluminium silicate and is also known by its other name of Cordierite. Iolite can be recognised by its strong...
Oct 19, 20181 min read
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Chrysocolla
Chrysocolla is a hydrated copper silicate and has a colour ranging from dark blue, through turquoise to green. Its hardness can vary from...
Sep 28, 20182 min read
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Turquoise
Turquoise is an opaque, blue-green mineral of hydrated copper aluminium phosphate. Being one of the first gemstones to be mined, it has...
Sep 21, 20182 min read
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Tigers Eye
Tigers eye is another member of the quartz family. The golden to brown fibrous inclusions within it are limonite and this gives it the...
Jul 20, 20182 min read
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Green Aventurine
Aventurine is a member of the Quartz family. Green is the most common colour of aventurine and its colour is due to an inclusion of...
May 18, 20182 min read
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