![]() ![]() As individual well-formed crystals in small cavities and fissures, in particular in volcanic rocks.Split-growth crystals ("artichoke quartz") in hydrothermal veins in ore deposits, but also in volcanic rocks.Scepters (late syntaxial overgrowth) on other color varieties of quartz, in particular in high- to medium-temperature environments like alpine-type fissures and pegmatites.Most common in volcanic rocks, but also in hydrothermal veins, and even in cavities in sedimentary rocks. Druzy crystal aggregates which outline cavities the crystals are usually short-prismatic and often lack prism faces.It is found in various shapes and forms the most common growth forms are: Amethyst Carat: Amethyst crystals do not get very substantial crystals longer than 30 cm are very scarce. It is also called fantasy or designer cuts that can be mass-produced or created as one-of-a-kind pieces. Amethyst is also a trendy gem for cutting into a variety of freeform or custom shapes. Facet designs include the typical triangular and kite-shaped facet, also called brilliant cuts, rows of concentric parallel cuts called step cuts, and mixed cuts combined with both facet patterns. These include emerald, rounds, ovals, pear cuts, triangles, cushions, marquises, and others. Cabochon and facet grade amethyst is faceted into a variety of shapes and cutting styles. Someone who knows how to maximize light while evading large dull windows in the stones will craft a much higher quality stone with the same rough as someone who is new and still learning this craft. Amethyst Cut: As with all facet grade stones, the cutter’s skill makes a huge difference in the polished product. Amethysts with eye-visible inclusions but charming color are customarily cut into beads or cabochons that display exceptional brilliance and high clarity. Eye-clean gem of the same color is more valuable. However, this is considered acceptable in cabochon and facet grade due to its striking color. ![]() It tends to have more inclusions than the ones from Brazil. African material, remarkably from Zambia, can be extremely saturated raspberry color. Some amethyst lose some brightness in daylightĪmethyst Clarity: Much of the cut amethyst in the market is eye-clean, indicating it lacks eye-visible inclusions. Any bronze-colored or brownish tints in an amethyst’s purple color, or any noticeable color zoning, lower its value dramatically. If the tone is too dark, an amethyst might look black under dim lighting conditions. Gem dealers prefer strongly saturated reddish-purple to dark purple, as long as the stone is not so dark that it degrades brightness. Rough Amethyst Color: The most delicate amethyst color is an intense reddish purple or purple with no visible color zoning. Its original color can be restored by X-ray radiation. Heat treatment between (470 to 750-degree C) produces light yellow, red-brown, green, or colorless varieties. When subjected to the action of heat, it shifts first to a more or less pronounced yellow, steadily assumes a greenish shade, and finally disappears. The color does not resist high temperatures. General Information about Raw Amethyst: A variety or types of: Amethyst possesses a Mohs hardness of 7 and is durable enough to use in rings, earrings, pendants, bracelets, and other types of jewelry. Amethyst is a semiprecious stone often used to produce cabochons, beads, faceted stones, and many other items for ornamental and jewelry use. It is the stone of Valentine and faithful love because it carries the energy of fire and passion, creativity, and spirituality. Amethyst has been highly admired for over 2 thousand years because of its stunning beauty in fact, they also name them "Gem of Fire." It is the birthstone of February and is also considered the 6th Anniversary gemstone. Split Rough Amethyst gemstone description: Amethyst is a variety of Quartz and is the world's most popular purple gemstone. ![]() Amethyst is a variety of Quartz and is the world's most popular purple gemstone. ![]()
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