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Corundum in matrix£3.95
Corundum Specimens / Rough (Purple)£1.25 – £2.55
Corundum Specimens / Rough (Red/Ruby)£0.30 – £9.95
Ruby Cabochons£5.00 – £24.95
Ruby in Zoisite Specimens / Rough£29.95
Ruby in Zoisite Tumblestones£4.25
Ruby, faceted£2.00 – £15.00
Appearance, Uses and History
Ruby is a gemstone variant of Corundum, and one of the worlds most beloved gemstones.
It is important to note that many people will consider pink-red stones Ruby, too – however, this is a hotly debated subject. The term ‘Sapphire’ refers to the other colours of gem Corundum.
It is a little difficult to get a handle on exactly where the distinction occurs, however, and for mineral specimens, I tend to refer to them as ‘red Corundum’.
The quality of a Ruby is determined by their colour, cut, clarity, and carat weight – the ‘4 C’s‘.
Ruby is typically used as a decorative stone or a gemstone – although there are uses in industry, these are typically done with synthetic Corundum.
Excellent mineral specimens (and some cuttable stones) are found in Afghanistan, Australia, Burma, India, Kenya, Madagascar, Mozambique, Myanmar, Nepal, Norway, Pakistan, Russia, Sri Lanka, Tanzania, the USA, and Vietnam.
Photos of Rubies
Hazards and Warnings
Almost all rocks, minerals (and, frankly, almost all other substances on earth) can produce toxic dust when cutting, which can cause serious respiratory conditions including silicosis.
When cutting or polishing rocks, minerals, shells, etc, all work should be done wet to minimise the dust, and a suitable respirator or extraction system should be used.
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