But their chemical composition and physical properties are very different. For example, 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 (3.18g) /cm3), tourmaline (3.05g/cm3) and emerald (3.33g/cm3) have higher densities. In the indoor test with tribromomethane, only emeralds floated up, and [...]
Category Archives: Jewelry News
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. Generally speaking, 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. For example, men like the big chicken heart, the hanging gall and the big Guanyin, and it is not enough [...]
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 [...]
What Is Yellow Gold? A mixture of silver, copper, pure gold (and a trace of zinc) gives yellow gold jewelry its rich shine. Although the percentages of each metal used to create the alloy vary, all formulas starts with 75% pure gold for 18k gold and 58.3% for 14k gold. 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 [...]
Density And Durability Platinum is durable. Its density makes it the most secure setting for your diamond or precious gemstone. All our platinum rings are crafted with platinum prongs for setting loose diamonds. Because platinum is a naturally white metal, re-plating is unnecessary; it will always hold its beauty. Platinum's Patina Though it is the [...]
Platinum's Patina Though it is the strongest of jewelry metals, platinum can incur a scratch and develop a patina of wear. The patina is considered by many to be a unique and often desirable attribute. However, the pre-patina shine and reflective luster can easily be revived by merely buffing it with a soft cloth. Purity [...]
Platinum's Patina Though it is the strongest of jewelry metals, platinum can incur a scratch and develop a patina of wear. The patina is considered by many to be a unique and often desirable attribute. However, the pre-patina shine and reflective luster can easily be revived by merely buffing it with a soft cloth. Purity [...]