Les saphirs produits à Penglai, Province de Hainan et Mingxi, La province du Fujian est belle en couleur et transparente. Les cristaux dont la taille des particules est inférieure à 5 mm présentent moins de défauts internes, tandis que les plus gros ont plus de fissures. Les saphirs produits dans la province du Heilongjiang sont brillants et transparents, mais il y a de fines particules. Although some products in Jiangsu Province [...]
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There are many gemstones that can produce starlight effect in nature. À présent, il y a 10 kinds of gems known as: saphir, rubis, almandin, béryl, bleu vert, spinelle, diopside, Cordierite, columnar and enstatite pyroxene. Parmi eux, the starlight effect of sapphire is the most common and the particles are large and eye-catching. Take sapphire, which has [...]
(1) La lumière des étoiles devrait être évidente, la position doit être centrée, et il ne devrait y avoir aucun rayon manquant. (2) La lumière des étoiles est claire, ce qui donne aux gens l'impression que cela vient de l'intérieur de la pierre précieuse, plutôt que de flotter à la surface de la courbe (c'est-à-dire des nouilles aux œufs) gemme. Parce que la lumière naturelle des étoiles rouge et [...]
D'après le point de vue gemmologique, le terme saphir fait spécifiquement référence aux pierres précieuses de corindon bleu. Autres pierres précieuses bleues qui ne sont pas du corindon (A1203) composants, peu importe à quel point ils sont mignons, ne devrait pas être appelé "saphirs". On peut l'appeler "gemme bleue" ou "pierre bleue XX". Par exemple, le diamant bleu peut être appelé "diamant bleu". [...]
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. Donc, the chance of finding rubies in pegmatite is extremely small, while it is possible to find sapphires. In basalt, là [...]
(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. Le nom "émeraude" comes from the transliteration of Persian Zumurud. Dans mon pays ancien, it was called "Zumurud" [...]
When the ancient Roman scholar Pliny commented on emeralds, il a dit: “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, à savoir: ①Color: emerald green and dark green are better, greenish blue and yellowish ones are inferior; ②Transparency: limpide, 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, fer, lithium, potassium, sodium, etc.. Due to the different content ratios of these elements, tourmaline often has different colors. Tel que [...]
Opal has many names, mainly "white gem" et "fancy stone". In the south of my country, ça s'appelle "nuage de montagne clignotant", 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. [...]