Since the "タイタニック号" movie hit, when everyone knew that the heart of the sea gem in the movie was tanzanite, it attracted the attention of the jewelry market, and tanzanite became more popular. As the zoisite to which tanzanite belongs, its origin is scattered in many places in Europe and Australia, but the main origin [...]
カテゴリアーカイブ: ジュエリーニュース
Olivine is a magnesium-iron silicate mineral, belonging to the orthorhombic crystal system. 屈折率は 1.654-1.690, and the birefringence difference is quite high as 0.036. From the table of the gemstone, the ridgelines of the bottom facet become overlapping The double shadow is because of the high birefringence difference, 分散率は 0.020, [...]
合成技術が開発される以前, ヒヤシンスジルコンの学名は、ダイヤモンドに最も近い天然宝石です。, したがって、ジルコンはダイヤモンドの最も初期の天然代替物であると言えます。, 屈折率がかなり高く、分散率が天然ダイヤモンドに近いため. ダイヤモンドと比べて, the [...]
Moonstone is a kind of Feldspar gems of Feldspar. Feldspar and quartz are very common and very important minerals in the earth's crust. According to the characteristics of feldspar, it can be divided into Orthoclase and Plagioclase. Moonstone is a kind of orthoclase, with a refractive index of 1.518-1.526, の複屈折の差 0.005, a [...]
Calcite is a calcium-containing carbonate mineral. It is a very important mineral in the earth's crust. It is often used as a teaching material to explain the characteristics of gems, but it is rarely used as jewelry because it has a very high birefringence difference and a perfect solution. Reason, although other gems also have [...]
In the gem trade, "カラット" is often used as the unit of quality. The term carat, originally in Greek, means the seed of a kind of "carob tree" that grows on the Mediterranean coast of Europe. The ancients believed that the quality of each seed was the same, so it was used as a weight [...]
人間は探し続けてきた, 宝石の採掘と使用はほぼ 6000 年. 例えば, 有名な中国人 "賀天翡翠" 原始社会から発見されている. 不完全な統計によると, 以上あります 600 世界で発見および採掘された宝石鉱山の種類, これらの gem リソースは主に次の場所に配布されています。 [...]
Among the five continents, Asia is not the continent with the most gem varieties and production. The other four continents have their own strengths. 2. Africa The African continent is extremely rich in gem production and is known as the richest gem warehouse on earth. The main gems are diamonds, エメラルド, タンザナイト, 黄金のエメラルド, ルビー, [...]
The strength of dispersion of different gemstones is different. It is usually expressed by the difference between the refractive index measured by red light at 686.7nm and purple light (460.8nm 1), and is called dispersion value. 一般的に, the dispersion value greater than 0.03 is called strong dispersion. Colorless or light-colored gems with strong dispersion can [...]
1. Helps identify gem species There are special inclusions in some gems, and the types of gems can be determined by studying these inclusions. 例えば, rubies often contain needle-shaped rutile particles, and they intersect at 60 angles. This is determined by the symmetry of the ruby itself. したがって, it is a unique inclusion of [...]