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Fine Jewelry University Articles matching: “two tone sapphire”
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Fine Jewelry University
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Gem in the Spotlight: Amethyst
… durability with a Mohs hardness rating of 7. For reference, 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 … of wine in remorse for his actions. These tears stained the quartz purple, resulting in the creation of the gemstone known as amethyst. Amethyst has a long history of being used in jewelry and other decorative items. It was highly prized…
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Gem in the Spotlight: Emerald
… 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 …Springtime exudes life, full of bright colors and renewed energy. Emerald, May’s gemstone, captures this enthusiasm for life in rich elegance. This precious gemstone has been revered for over 4,000 years … are referred to as jardin (the French word for garden) because they look like moss or a garden inside of the stone. These inclusions are tiny fissures, bubbles, or crystals that are visible to the naked eye. These inclusions are not …
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Gem in the Spotlight: Opal
…used in jewelry. For reference, here are the Mohs hardness values for some other gemstones you may know: Diamond 10, Sapphire 9, Amethyst 7, and Peridot 6. Turquoise is about as hard as opal, but you would need to consider Pearl or Amber (…the gem world, and the lore that surrounds it is almost as colorful as the gem itself. Opal is the traditional birthstone for those lucky enough to born in October, and it is found in a huge variety of colors (sometimes all within the …
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Gem in the Spotlight: Quartz
… is known for its durability with a Mohs hardness rating of 7 (harder than opal and peridot but softer than topaz or sapphire). This makes it a fairly hard gemstone that is resistant to scratching and chipping. It is also resistant to heat … at the title and knew). Quartz is one of the most common minerals on earth. Many quartz varieties are cut into gemstones, but some varieties are very rare. Some are ordinary like rock quartz, others are exotic like Drusy Quartz. Some …
