AGI - Key Persons
Possibly one of the most well-known purple gems, amethyst is a transparent variety of quartz with little to no inclusions and good luster and brilliance. This lesser-known variety of amethyst is a light mint to leek green that is created by heating amethyst or other colors of quartz. It is sometimes referred to as prasiolite.
Possibly one of the most well-known purple gems, amethyst is a transparent variety of quartz with little to no inclusions and good luster and brilliance. Top-quality "Siberian" amethyst, so named for the now exhausted Ural mine, is vividly saturated with fuchsia- to reddish-purple flashes. Given the stone's low price per carat, it is a beautiful option for affordable statement jewelry.
Fish Hook: A marquise-shaped box with a hook-shaped tongue that hooks around a post on the box's opening before clicking into place, providing a compact safety catch.
Green Jade is a variety of Jadeite, one of two distinctly different minerals that share the name Jade. Jadeite is a sodium aluminum silicate, hard and lustrous, and rarer than Nephrite. Green jade is translucent to opaque and ranges in color from robin's egg blue to deep aqua to royal blue.
This precious variety of opal features color play on a black main body color. Because an opal's flash can vary so widely in color and pattern, heavy emphasis can be placed on the origin from which the opal was mined. Australian "Lightning Ridge" opals often have blue, blue-green, or red-blue-green flash on black body color; Ethiopian opals are often white in body color with rainbow flash.
This precious variety of opal features exceptional color play on a transparent to semi-transparent background. Because an opal's flash can vary so widely in color and pattern, heavy emphasis can be placed on the origin from which the opal was mined.
Freshwater: The most common pearl that is found in a wide range of sizes from about 2.0mm to 15.0mm. Grown in freshwater lakes, rivers, and ponds predominately in China.
Like sapphire, ruby is a precious gemstone composed of corundum, which at a 9 Mohs hardness is the second hardest gemstone on Earth. It is purely defined from sapphire by its bright red tone. This variety of ruby displays asterism, an effect that creates a six-pointed star on the stone's surface in strong light. The star is created by the stone's internal silk inclusions.
Sapphire is a precious gemstone composed of corundum, which at a 9 Mohs hardness is the second hardest gemstone on Earth. This variety of black sapphire displays asterism, an effect that creates a six-pointed star on the stone's surface in strong light. The star is created by the stone's internal silk inclusions.
Sapphire is a precious gemstone composed of corundum, which at a 9 Mohs hardness is the second hardest gemstone on Earth. While best known for its royal blue color, sapphire is found in a variety of tones. Its green color varies from pale seafoam green, to olive, peridot-like tones, to vibrant deep blue-green to forest green tones rivaling emerald.
Sapphire is a precious gemstone composed of corundum, which at a 9 Mohs hardness is the second hardest gemstone on Earth. While best known for its royal blue color, sapphire is found in a variety of tones. Its orange color varies from light golden orange to orange-red.
Sapphire is a precious gemstone composed of corundum, which at a 9 Mohs hardness is the second hardest gemstone on Earth. While best known for its royal blue color, sapphire is found in a variety of tones. Its peach color, defined as a light orangey-pink flesh tone, has become immensely popular for engagement ring settings.
Sapphire is a precious gemstone composed of corundum, which at a 9 Mohs hardness is the second hardest gemstone on Earth. While best known for its royal blue color, sapphire is found in a variety of tones. Its popular pink variety ranges from pale, pastel pink to hot pink and reddish-pink.
Sapphire is a precious gemstone composed of corundum, which at a 9 Mohs hardness is the second hardest gemstone on Earth. This variety of blue sapphire displays asterism, an effect that creates a six-pointed star on the stone's surface in strong light. The star is created by the stone's internal silk inclusions.
Sapphire is a precious gemstone composed of corundum, which at a 9 Mohs hardness is the second hardest gemstone on Earth. While best known for its royal blue color, sapphire is found in a variety of tones. Its colorless variety is widely regarded as a good substitute for diamond as a natural colorless gem.
Sapphire is a precious gemstone composed of corundum, which at a 9 Mohs hardness is the second hardest gemstone on Earth. While best known for its royal blue color, sapphire is found in a variety of tones. Its yellow variety resembles rare yellow diamond, ranging in tone from light lemon yellow to canary yellow and deep golden yellow.
Spinel is a brilliant and durable material found in a wide variety of colors. Black varieties of the material make an excellent choice as a substitution for black diamond.
A transparent gemstone in a variety of colors, including two- or three-color stones. Green tourmaline ranges from light, blueish green to vibrant emerald tones to deep olive greens.
A transparent gemstone in a variety of colors, including two- or three-color stones. Yellow tourmaline can resemble yellow sapphire and is found in electric yellow to brownish-orange yellow tones.