Silver What Is Sterling Silver? Pure silver is relatively soft and malleable, and easily damaged—not well suited for jewelry. To defend against deformation or destruction, silver is combined with other metals to make it more durable. Sterling silver is the most common alloy mix found in jewelry. It must be at least 92.5% เงินบริสุทธิ์, […]
คลังเก็บหมวดหมู่: ข่าวเครื่องประดับ
The sapphires produced in Penglai, Hainan Province and Mingxi, Fujian Province are beautiful in color and transparent. Crystals with a particle size less than 5mm have fewer internal defects, while larger ones have more cracks. The sapphires produced in Heilongjiang Province are bright and transparent, but have fine particles. Although some products in Jiangsu Province […]
There are many gemstones that can produce starlight effect in nature. ในปัจจุบัน, there are 10 kinds of gems known as: ไพลิน, ทับทิม, almandine, beryl, สมเด็จ, spinel, diopside, cordierite, columnar and enstatite pyroxene. ในหมู่พวกเขา, 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) gemstone. 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 “ไพลิน”. It can be called “blue gem” หรือ “blue XX stone”. ตัวอย่างเช่น, 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. ดังนั้น, 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. ชื่อ “มรกต” comes from the transliteration of Persian Zumurud. In ancient my country, it was called “Zumurud” […]
When the ancient Roman scholar Pliny commented on emeralds, he said: “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, namely: ①Color: emerald green and dark green are better, greenish blue and yellowish ones are inferior; ②Transparency: crystal clear, 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, iron, lithium, potassium, sodium, ฯลฯ. Due to the different content ratios of these elements, tourmaline often has different colors. Such as […]