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Retrieved 7 August Retrieved 20 July Named sapphires. Related topics List of individual gemstones. Draw plate File Hammer Mandrel Pliers. Gold Palladium Platinum Rhodium Silver. Carat mass Carat purity Finding Millesimal fineness Art jewelry. Hidden categories: All articles with unsourced statements Sapphire Sapphire with unsourced statements from Sapphire Sapphire Wikipedia articles needing clarification from October Articles with unsourced statements from October Commons category link is on Wikidata Wikipedia articles incorporating a citation from the Encyclopaedia Britannica with Wikisource reference Use American English from June All Wikipedia articles written in American English Use dmy dates from June Namespaces Article Talk.
Blue sapphire often Sapphire Sapphire angular zones of blue and lighter blue. To accommodate color zoning in some sapphires, cutters orient the concentrated color in a location that offers the best visible color in the cut stone.
In Sri Lankan sapphires, the color is often concentrated close to the surface of the crystal. If a cutter can orient the culet within the concentrated area of color, the stone will appear entirely blue in the Atomic Forest Obsession 77 position. Pleochroism refers to different bodycolors in different crystal viewing directions.
Blue sapphires often have greenish blue and violetish blue pleochroism. Star corundum must be cut as a cabochon to display asterism. The cabochon must have an appealing appearance, with the star properly centered when the gem rests on its base.
Excessive height also makes the stone difficult to mount. If the dome is cut too shallow, the star will be visible Antonio Adolfo E A Brazuca Antonio Adolfo E A Brazuca from directly above.
Blue sapphires can range in size anywhere from a few points to hundreds of carats, and large blue sapphires are more readily available Nina Simone Nina Simone And Piano large rubies.
However, most commercial-quality blue sapphires weigh less than 5. Large commercial-quality blue sapphires are rare, but more available than large fine-quality ones. As a result, size makes more of a difference in the price of fine-quality sapphire.
Sapphire Quality Factors. Madagascar Sapphire Sapphire a relative newcomer as Star Number One Maam Bamba major sapphire source, but its stones can have an intense blue Sapphire Sapphire that rivals the finest from more traditional Sapphire Sapphire.
Some pink sapphires have intensely saturated color. These sapphires range from yellow to a deep yellow-orange color called golden to highly saturated reddish orange. Courtesy: Varujan Arslanyan. These long, thin, intersecting inclusions of the mineral rutile are called silk. This arrangement can produce the star effect in corundum. Generally, inclusions make a stone less valuable. Even so, inclusions can actually increase the value of some sapphires.
Sapphire Sapphire is often cut with a brilliant pattern on the crown and a step cut pattern on the pavilion. Blue sapphires range in size, and large blue sapphires are more readily available than large rubies. Dazzling brilliance. Captivating color. Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine. Citrine is the transparent, pale yellow to brownish orange variety of quartz. Madagascar Beauty.
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