A mosaic of blue gemstones

mosaiques pierres bleues

Apatite is a calcium phosphate mineral. It is the most widespread phosphate in theĀ  nature. The name Apatite derives from Greek “apatein” meaning “misleading” because this gemstone was confused with other minerals like tourmaline, peridot, emerald or aquamarine. Surprisingly, Apatite is the main constituent of bones and teeth!

Apatite can be blue, green, brown, yellow, violet, pink or colorless. This gemstone is found in Brazil, Burma, Mexico. The violet and purple ones are found in Maine and Afghanistan. My favourite varieties of Apatite are : neon blue apatite and Paraiba apatite. Besides, Apatite is believed to have calming, comforting and stimulating properties.

Anne Sisteron’s earrings

Blue topaz jewelry

Topaz is an aluminium silicate containing fluorine and hydroxyl. Purely, it is colourless (white) ; it is the impurities which cause the variations of colour. “Topaz ranges from colourless to yellow, orange, red-brown, light to dark-blue, pink to red, violet and light-green.” Furthermore, Topaz is distinguished by its hardness and its perfect cleavage. This fine stone is found in Brazil, Afghanistan, Australia, Myanmar (Burma), China, Germany, Japan, Madagascar, Mexico, Namibia, Nigeria, Pakistan, Russia, Zimbabwe, Sri Lanka, Ukraine and in the USA.

Blue topaz are very rarely in the nature (deposits in Northern Ireland and UK), and there are only in a very pale blue colour. The other shades of blue result from techniques (irradiation and heating).

Sources :

http://www.gemselect.com/gem-info/topaz/topaz-info.php

http://www.gemselect.com/other-info/topaz-colors.php

Tanzanite jewelry

This gallery contains 2 photos.

Tanzanite is a variety of Zoisite (calcium aluminum silicate ) and has a colour varying from blue to violet. This stone is Heat treatments enhance the Tanzanite’s colours. This gemstone is named “Tanzanite” because a deposit was found in 1967 … Continue reading

Turquoise jewelry

Turquoise is a hydrated copper and aluminium phosphate. The colour varies from blue to blue-green. Turquoise is often mottled with cream or brown veins. Furthermore, the name “turquoise” comes from a confusion : when Venitian merchants brought this stone in France, it was called “Turkish stone”, from Turkey whereas it was from Persia. Besides, the finest turquoise stones are found in Northeast Iran ; there are other deposits in Afghanistan, Argentina, Australia, Brazil, China, Israel, Mexico, Tanzania and in the USA.

Elizabeth Locke and Katy Beh’s earrings.

Amazonite jewelry

The Amazonite (also named Microcline) is a variety of potassium feldspar (like moonstone). The name “Amazonite” comes from the Amazon River in Brazil. The colour varies from green to blue-green. This fine gemstone can be confused with Turquoise and Jade. Amazonite is found mainly in Colorado, Brazil, India, Kenya, Madagascar, Namibie, Russia and Zimbabwe.

Jacquie Aiche’s charm

Sources :

Apatite jewelry

This gallery contains 2 photos.

Apatite is a calcium phosphate mineral. It is the most widespread phosphate in theĀ  nature. The name Apatite derives from Greek “apatein” meaning “misleading” because this gemstone was confused with other minerals like tourmaline, peridot, emerald or aquamarine. Surprisingly, Apatite … Continue reading