Die saffiere wat in Penglai vervaardig word, Hainan-provinsie en Mingxi, Fujian Provinsie is pragtig van kleur en deursigtig. Kristalle met 'n deeltjiegrootte van minder as 5 mm het minder interne defekte, terwyl groteres meer krake het. Die saffiere wat in Heilongjiang-provinsie vervaardig word, is helder en deursigtig, maar het fyn deeltjies. Although some products in Jiangsu Province [...]
Kategorie -argiewe: Juwele nuus
There are many gemstones that can produce starlight effect in nature. Tans, daar is 10 kinds of gems known as: saffier, robyn, almandyn, beryl, akwamaryn, spinel, diopside, cordieriet, columnar and enstatite pyroxene. Onder hulle, the starlight effect of sapphire is the most common and the particles are large and eye-catching. Take sapphire, which has [...]
(1) The starlight should be obvious, the position should be centered, and there should be no missing rays. (2) The starlight is clear, which makes people feel that it comes from the inside of the gemstone, rather than floating on the surface of the curved (ie egg noodle) edelsteen. Because the natural starlight red and [...]
According to the gemological point of view, the term sapphire refers specifically to blue corundum gemstones. Other blue gemstones that are not corundum (A1203) components, no matter how cute they are, should not be called "saffiere". Dit kan genoem word "blue gem" of "blue XX stone". Byvoorbeeld, blue diamond can be called "blue diamond". [...]
In pegmatite, although the crystal has enough space for growth, the possibility of proper pigment ions, especially Cr ions, entering the lattice is very small, while Fe and Ti ions may enter the lattice. Dus, the chance of finding rubies in pegmatite is extremely small, while it is possible to find sapphires. In basalt, there [...]
(1) Emerald-emerald green beryl containing chromium, (2) Aquamarine-iron-containing sky blue to sea blue beryl. (3) Golden emerald-golden yellow beryl containing iron, (4) Dark brown emerald-ilmenite beryl with starlight effect. (5) Rose emerald-beryl containing cesium, lithium or manganese. Die naam "smarag" comes from the transliteration of Persian Zumurud. In antieke my land, it was called "Zumurud" [...]
When the ancient Roman scholar Pliny commented on emeralds, het hy gesê: “Indeed, no gemstone has a more pleasing color, and emeralds always emit a soft and rich brilliance, which makes people never tire of it.” In addition, the production of emeralds in the world is extremely rare (much less than the production of diamonds). According [...]
There are four main economic evaluation conditions for emeralds, naamlik: ①Color: emerald green and dark green are better, greenish blue and yellowish ones are inferior; ②Transparency: kristalhelder, clear and bright is the best, translucent Those who can only be included in the third grade; ③Purity: emeralds are often flawed, pure ones are rare and [...]
(1) Complex composition: Tourmaline is an extremely complex boro-aluminosilicate mineral, and it is the gem mineral with the most complex chemical composition in nature. It may contain one or several elements such as magnesium, strykyster, litium, potassium, natrium, ens. Due to the different content ratios of these elements, tourmaline often has different colors. Soos [...]
Opal has many names, mainly "white gem" en "fancy stone". In the south of my country, dit word genoem "flitsende bergwolk", which comes from Australia's famous producing area "Lightning Ridge". Opal is listed as the birthstone of October by the international jewelry industry, symbolizing hope and happiness. Opal is the most colorful of gemstones. [...]