ที่สำคัญกว่านั้น: Put artificial red and sapphire on white paper or in the water in a white container to observe. The color bands or growth lines are mostly curved and curved, while the hexagonal growth lines of natural products are slightly curved. The ribbon is straight. นอกจากนี้, the fluorescence of artificial rubies is stronger […]
คลังเก็บของผู้แต่ง: กษัตริย์
But their chemical composition and physical properties are very different. ตัวอย่างเช่น, emerald has a hardness of 7.5-8, while fluorite has a hardness of 4; emeralds have a density of about 2.7g/cm3, while fluorite (3.18ก) /cm3), ทัวร์มาลีน (3.05g/cm3) และมรกต (3.33g/cm3) have higher densities. In the indoor test with tribromomethane, only emeralds floated up, และ […]
Natural emeralds can be divided into two types: (1) American type: includes emeralds produced in Colombia, Brazil and the United States. It is characterized by low refractive index, small specific gravity, ultraviolet (long wave) irradiation and fluorescence, and the color turns red when observed with Charles filter. (2) African type: emeralds produced in Zimbabwe, South […]
(1) Regarding the choice of type and size. โดยทั่วไป, the chicken heart, hanging gall and Guanyin are suitable for women to wear; Maitreya Buddha is suitable for men to wear, but there are exceptions. ตัวอย่างเช่น, men like the big chicken heart, the hanging gall and the big Guanyin, and it is not enough […]
08
ธ.ค.
ธ.ค.
“This is my first bracelet ever, so I couldnt buy anything too expensive. Bought this a few days ago, overall pretty satisfied. Thanks ChainsHouse Sizing: I have a 6.6 inch wrist and I bought the 7.5 inch one, there is about enough space to fit one or two fingers so its not too tight. แต่ […]
08
ธ.ค.
ธ.ค.
“As soon as I took it out of the packaging to inspect it and try it on, the little crystals began falling off. I had it out of the box for maybe 2 minutes and already 6 crystals have fallen off. I can’t gift this garbage to my mother for Christmas, so looks like I […]
What Type Of Gold Does Blue Nile Use For Ring Heads? For yellow gold and rose gold settings, Blue Nile uses platinum ring heads to secure center diamonds. All designs in 14k white gold use 14k white gold ring heads which have the strength and durability required to keep a center stone safe. 14k white […]
เยลโลว์โกลด์คืออะไร? มีส่วนผสมของเงิน, ทองแดง, ทองคำบริสุทธิ์ (และร่องรอยของสังกะสี) ช่วยให้เครื่องประดับทองคำเหลืองมีความแวววาว. แม้ว่าเปอร์เซ็นต์ของโลหะแต่ละชนิดที่ใช้สร้างโลหะผสมจะแตกต่างกันไป, ทุกสูตรขึ้นต้นด้วย 75% ทองคำบริสุทธิ์สำหรับทอง 18k และ 58.3% สำหรับทอง 14k. The result gives off a […]
Blue Nile Gold We carry jewelry that’s crafted in both 18k and 14k gold. Our 18k gold is an alloy of 75% gold with other metals to make it strong enough for everyday wear, and our 14k gold is an alloy of 58.3% gold and other metals. The minimum karat that is allowed to be […]
What Is Gold? People love gold—and they have for a very long time. While the gold adornments preferred by Egyptian Pharaoh Tutankhamun (aka: King Tut) circa 1323 B.C. differ from those worn by today’s style influencers, gold is as prized now as it was then. It’s no wonder that ancient cultures all over the world […]