Home > Blossary: Gemstones
Minerals or crystalline rocks which are cut and polished to be used as gems or jewellery.

Category: Other

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Created by: mbourgaize

Number of Blossarys: 6

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Sapphire is any colour of the mineral corundum other than red, which is called ruby. Corundum is composed of aluminium oxide. Sapphires tend to be translucent or transparent and have high amounts of refraction. The most desirable sapphires are generally those with an intense blue colour with plenty of sparkle and life. Various shades of blue result from titanium and iron substitutions in the aluminium oxide crystal lattice. They can be found in Brazil, Tanzania, Sri Lanka, Kashmir, Thailand, Madagascar and Australia. Source: Encyclopedia of gemstones and minerals.

Domain: Geology; Category: Minerals

Le saphir est n'importe quelle couleur de corindon autre que rouge, qui s'appelle ruby. Le corindon est composé d'oxyde d'aluminium. Saphirs ont tendance à être translucides ou transparents et ont des montants élevés de réfraction. Les saphirs plus désirables sont généralement ceux d'une couleur bleue intense avec beaucoup d'éclat et de la vie. Diverses nuances de bleu résultent de substitutions de titane et de fer dans l'aluminium oxyde cristallin. Ils se trouvent en Tanzanie, Sri Lanka, Cachemire, Thaïlande, Madagascar, Brésil et Australie. Source : Encyclopédie des pierres précieuses et des minéraux.

Domain: Geology; Category: Minerals

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