Jadeite is a gem jadeite produced by Burma, which is a gem-quality jadeite. It is a collection of dense blocks of numerous fine fiber crystals. Japan, Russia, Mexico, California and other places also produce a small amount of jadeite (Jadeite). Quality and output are far less than the Union of Myanmar. In the Myitkyina region of the northern part of the Union of Myanmar, the jade deposits have the largest reserves, and the gem-quality jadeite has been mined very early and supplied to all parts of the world.
Therefore, people only know that the Burmese Federation has produced jade for a long time. Therefore, the Union of Myanmar jade is synonymous with jadeite. Jadeite is a mineralogy term, while Burmese jade is a jargon of experts (there is no jade in Myanmar, jade is The Chinese give this natural elf the name. It comes from the name of a jade bird, because the most beautiful green and red in the gem jade is the same as the color of the bird. The name of the gem is "Jade."
The fine jadeite is now cherished by more and more people in the world. At the same time, in the world of jewellery customs, people also set jade as the birthstone of May, a stone of kindness and enthusiasm. Jadeite is produced in the border of Burma and the border between China and Burma. It has not entered China in the Ming Dynasty, and a large amount of input into China is a matter after the middle of the Qing Dynasty. However, judging from the written records and unearthed physical records, the era of jade appeared much earlier.
Physical and chemical properties:
Main chemical composition: sodium and aluminosilicate, {main chemical composition NaAl[Si2O6], in which Al can be replaced by C8 and a small amount of Fe} Crystallization characteristics: granular to fibrous aggregate, interlaced, dense block. Monoclinic system. {Light characteristics: heterogeneous aggregates, fully illuminated under crossed polarizers}
Hardness: 6.5 to 7
Resilience: especially strong {Note: toughness is worse than nephrite}
Cleavage: The cleavage surface flash is commonly known as "flying wings" {Note: Quartzite, marble and other jade have similar phenomena}
Fracture: fine grain to lobes
Specific gravity: 3.31 to 3.40; usually 3.33
Refractive index: around 1.66 {-0.01; +0.02}
Absorption spectrum: usually has a absorption line of 437 nm; green jade also has three absorption lines of 630 nm, 660 nm, and 690 nm;
UV fluorescence: usually inert
Polychromism: none
Color: Diverse, there are five main color series in green series, brown yellow series, purple series, non-color series and multi-color series;
Green series: with yellow to green, with blue tones, oil blue series, etc.
Brownish yellow series: yellow, brownish yellow, brown, maroon and other colors
Purple series: eggplant purple, pink purple, light pink, pink, purple and other colors
Achromatic series: white, enamel, black, glass, colorless, etc.
Multi-color series: green + brown yellow, green + purple, green + white, three colors, etc.
Transparency: micro-transparent, translucent, transparent {Note: no opacity, dry blue is also slightly transparent}
Gloss: grease - glass luster
Internal texture: diversification
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