同じ体積の宝石の重さと水の重さの比を比重といいます。. 空気中の宝石の重さを、空気中の宝石の重さと水中の宝石の重さの差で割ります。, and the value [...]
カテゴリアーカイブ: ジュエリーニュース
宝石の鉱物には多くの場合、固定された, 独立した結晶形, 結晶格子パターンは鉱物の物理的特性によって決まります。. 通常、宝石の結晶形は宝石のカット方法に影響します。. 宝石の結晶系は次のように分類されます。: アイソメトリック, 正方晶系, 六角, 三角, 斜方晶系, および単斜晶系. 単斜晶系), 三斜晶系 [...]
研究によると, エメラルドはエジプトの紅海西岸で採掘されました。 4,000 数年前. クレオパトラの好きな宝石はエメラルドです. 彼女はエメラルド鉱山に自分の名前を付けただけではありません. クリーペドロの名において, 彼はまた、そこで産出された素晴らしいエメラルドで大臣たちに褒美を与えました。. Thanks to [...]
Among the colored gemstones, golden emeralds are expensive gems with low output but very popular. The color of chrysoberyl ranges from yellow to yellow-green and yellowish brown. It is similar to the shape of golden beryl. Since the refractive index and hardness of chrysoberyl are higher than that of beryl, the luster after cutting is [...]
Both alexandrite and opal alexandrite belong to the golden emeralds among the colored gems, and they are treasures among gems. で 1830, a color-changing gem was discovered in the Ural Mountains of Russia. This day happened to be the birthday of Emperor Kaiser Alexander II of Russia, so it was named Alexandrite after the Emperor [...]
Pearls symbolize purity, tenderness, love and peace. It is said that pearls are the favorite of the goddess of the moon. In Western astrology, pearls are also the guardian stone representing the moon. In the history of ancient civilizations, pearls have a very lofty status and are one of the few gems that were regarded [...]
Pearl appeared in human history quite early. People in ancient times believed that it had a powerful power, so it was given many mysterious legends and occupied a large area in jewelry. Ancient priests often put a pearl on their foreheads to enhance their spiritual power. These priests are usually the most powerful figures in [...]
Pearl is the most valuable and most important kind of organic gemstones. It is formed by enveloping the pearl core with the pearl secreted by shellfish, so unlike other gemstones, which have crystal form and chemical composition, the main chemical composition of pearl is 90%. The above is calcium carbonate, the rest is water and [...]
Although cultured pearls are artificially implanted into the nucleus, the results depend on biological phenomena. Even if the implanted nuclei are all round, they often appear in many different shapes under the nacre secreted by shellfish. It can be classified into the following types: ラウンド, off-round, pear-shape, circular shape, and baroque. 一般的に言えば, the round [...]
All pearls produced in the South Pacific are called South Sea Pearls. In terms of appearance, South Sea Pearls are generally larger in size, について 9 に 20 cm in diameter, and their luster and skin brightness are better than the other two pearls. South Sea pearls can be divided into white South Sea beads, [...]