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#naturesgems

Wednesday, June 29, 2016

Fluorite
Illinois, USA

#jewelleryfacts365 150/365 Gem fact

Obsidian is a natural glass that is formed during volcanic eruptions, as a result of quickly cooled lava, which is the parent material.

Raw obsidian

Jewellery masterpiece

Tuesday, June 28, 2016

#jewelleryfacts365 149/365

Egypt and Mesopotamia were the first two ancient civilizations that started organized production of jewelry.

Ancient Mesopotamia Jewellery

Beautiful nature

Monday, June 27, 2016

Rhododendron flower

#jewelleryfacts365 148/365 Gem fact

Garnet sand is a good abrasive, and a common replacement for silica sand in sand blasting. Mixed with very high pressure water, garnet is used to cut steel.


Ladybug pendant with garnet and black onyx
(sterling silver and copper)

#naturesgems

Sunday, June 26, 2016

Chrysacola druzy and Malachite

#jewelleryfacts365 147/365 Gem fact

The pink color of tourmalines from many fields is the result of prolonged natural irradiation. Some tourmaline gems, especially pink to red colored stones, are altered by heat treatment to improve their color. Irradiation is almost impossible to detect in tourmalines, and does not, currently, impact the value. Heat treatment is also used to enhance tourmaline. Heavily-included tourmalines, such as rubellite and Brazilian paraiba, are sometimes clarity-enhanced. A clarity-enhanced tourmaline (especially paraiba) is worth much less than a non-treated gem. (source)


Sterling silver gold plated  pendant with pink tourmaline

Bead Day

Saturday, June 25, 2016

Karen Crabb
Encrusted Crustacean
Edmonds, WA

#jewelleryfact365 146/365 Gem fact

Rarely, gem-quality tanzanite will heat to a green primary hue, most always accompanied by a blue or violet secondary hue. These green tanzanite have some meaningful value in the collector market, but are seldom of interest to commercial buyers.(source)


 
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