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Fine Jewelry University Articles matching: “white sapphire”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Emerald
… and aquamarine) and are valued for their rich green color. The intensity of an emerald’s hue depends on the presence of chromium and vanadium in the crystal structure. Emerald’s Mohs hardness rating is 7.5-8 making it softer than sapphire and harder than amethyst and other quartz varieties. The refractive index of emerald ranges from 1.57 to 1.58, making it a moderately refractive gemstone. Its specific gravity ranges from 2.65 to 2.75. One of the distinctive features of …
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Diamond Buying Guide: The 4 C’s
…choose to go down a color grade to allow you to buy a larger diamond for the same price. Or, you may want to get the whitest diamond possible to outshine your friends when you put them side-by-side. It’s all about discovering what’s most …. While natural fancies can be very rare and extremely expensive, we now have the technology to permanently color a white diamond to almost any color you can imagine. You can read more about fancy diamond colors here. Clarity Most diamonds…
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Gem in the Spotlight: Jade
… is commonly found in a darker olive green color but can also be very light green, orangey-red, black, and yellowish green. Jadeite can come in many different colors including pink, purple (often called lavender jade), blue, black, white, and the most valuable/desirable color: a vibrant green. The finest of all green jadeite colors is a saturated emerald green that is almost transparent, and it is called “Imperial Jade.” Jade is one of the top selling gems in Asia, but …
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Gem in the Spotlight: Pearl
…iridescent rainbow colors that shimmer on or just below a pearl’s surface). Pearls come in a range of colors, from white to black, with many shades in between. The most valuable pearls are those with a pure, even color, such as white, pink…
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Learn Secret Diamond Buying Skills From a Professional Diamond Buyer
… transparent. The scale then moves down the alphabet to the next level of less transparency color. D to F are colorless grades, G-J are near colorless, K-M faint yellow on down the scale to more inner color. Colorless is also called white. The key to judging color is a master. Master sets cost a lot of money and only make sense for the diamond professional to own. The secret for the diamond buyer is have your own color grading master stone. If you own a diamond bring it …
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The History of Diamond Cuts
… Round Brilliant Cut Now, we are nearing the end of our journey through the history of diamond cuts. The modern round brilliant cut is a product of math and science. Marcel Tolkowsky analyzed diamond brilliance in the way they take white light and break it into its spectral hues and direct it to impress the wearer. Tolkowsky’s calculations serve as the basis for the modern round brilliant. Since its creation subtle and not so subtle variations on the round brilliant have…
