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Fine Jewelry University Articles matching: “what ppc means”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Tourmaline
… in submarines. History and Lore of Tourmaline The name tourmaline comes from the Singhalese word turamali, which means “mixed gems” owing to the fact that the gem can look like many others. Tourmaline was first discovered in 1554 in …, right here in California . Maybe you just appreciate the vibrant colors and rich history of this very special gem. Whatever your reason, you can’t go wrong with a beautiful piece of tourmaline jewelry, and the gemologists here at Arden …
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Gem in the Spotlight: Spinel
… jewelry in the sense that it is only recently getting attention on its own and not just imitating other gems. This means that the prices are still relatively low for a stone of this durability, rarity, and beauty. Spinel can be just as … regularly for the last century, whether it is with an heirloom piece of jewelry or something found at the beach, what many people have believed to be a ruby for years turned out to be spinel. While modern technology and gemological …
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Star White Gold
… made gas. White gold also has three grades. Grade 3 is off white, grade 2 is standard, and grade 1 is premium. This means that when white gold is made, it can be yellowish to light yellow. When white gold rings are new they are coated … with no real solution…now we have a solution! Why are white gold consumers dissatisfied? Because they don’t know what the true color of the jewelry is when they buy it. I have seen a yellow gold ring heavily plated to look white. This …
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Jewelry Repair FAQ
…. Molecules are the key to understanding gold plating. The amount of gold used is on the molecular level. This means that only a very thin layer of gold covers the surface. Gold plating produces a layer of gold around 0.5 microns thick. A … quite similar to the original. So, that beautiful piece of jewelry you love can look just the way it used to again. What is retipping, and why do I need it? In a large number of jewelry pieces, the valuable diamonds and gemstones are …
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What Are Lab Grown Diamonds?
…, described as synthetic diamonds. This misrepresentation has seriously confused what the term “synthetic” means, and it’s why most producers of man-made diamonds prefer the term “lab grown” over “synthetic.” In order to appreciate this … artificial or even fake. Synthetic can also mean man-made, copied, unreal, or even imitation. But, in this context, what do we mean when we say “synthetic diamond”? In the gemological world, synthetic is a highly technical term. When …
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Gem in the Spotlight: Amethyst
… is roughly as hard as tourmaline, softer than sapphire and topaz, and harder than opal and tanzanite. This makes it a durable gemstone that is resistant to scratching and chipping. It is also resistant to heat and chemicals which means that it can withstand daily wear and tear. Amethyst has the same refractive index as other varieties of quartz at 1.54-1.55 and is doubly refractive. It has a vitreous polish luster and its specific gravity is 2.66. Its chemical …
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Gem in the Spotlight: Jade
…different gems, with different refractive indices and chemical makeups. Both gems are silicates which basically just means that they are rocks. These particular rocks are made up of silicon and oxygen as the primary components, but the …and it has been an incredibly important part of Asian, Central American, and North American history ever since. But, what is jade, and what has given it such a prominent place in human history? The term “jade” actually refers to two …
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Art Deco vs. Art Nouveau Style Jewelry
…and the human form. Art Nouveau, also referred to as Jugendstil and Stile Liberty among many other monikers, simply means “New Art” and it impacted almost every artistic medium. Jewelry makers embraced materials such as enamel, horn, and … influence everywhere. They are also important guide posts that can aid in dating vintage and antique jewelry. So, what are these two movements all about, and where did they come from? Origins and Historical Context Originating in the …
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Learn Secret Diamond Buying Skills From a Professional Diamond Buyer
… looking for the absence of color or transparency (except in fancy color diamonds). A letter grade starting with “D” means totally transparent. The scale then moves down the alphabet to the next level of less transparency color. D to F are…. They don’t set the price, just the basis to determine the price. In the final analysis, the price of a diamond is whatever two people agree it is. The easiest starting place for diamond value is carat. All carat describes is how much a …
