2.40 cts Oval Cabochon NATURAL BLUE 6 STAR SAPPHIRE (2 Gemstones) Gem Type: Natural 6 Star Sapphire Quantity: 2 Gemstones Carat Weight: 2.40 cts Colour: Blue Clarity: Opaque Cut: Oval Cabochon Measurements: 7-7.2 x 5.2 x 2.9mm Treatment: Natural (Heated) Origin: Thailand Star rubies and star sapphires belong to the phenomenal corundum category. The star effect is called asterism. It’s caused by reflections from tiny, needle-like inclusions that are oriented in several specific directions. Stars are usually made up of 2, 3, or 6 intersecting bands, resulting in 4, 6, or 12 rays. The most common stars have 6 rays, and 12-rayed stars are quite rare. Two different sets of inclusions—one of rutile and one of hematite—oriented in slightly different directions can cause a 12-rayed star. Hematite inclusions cause asterism in black star sapphires. The sapphire’s color is actually yellow, green, or blue, but the inclusions make it appear dark brown or black. The finest star is distinct, centered on the top of the stone, and visible from a reasonable distance, about arm’s length. The star’s quality should be the same when viewed from all directions. The rays should be uniform in strength, reach from one side to the other, and intersect at the top of the stone. They should be straight, not fuzzy, wavy, or broken, and they should contrast strongly against the background color. The star should also have elegant “movement.” This means that, as you rock the stone, the star should move smoothly across the surface with no dead spots. Please Note: We use natural sunlight when we can. We also use lights that produce as close to possible natural daylight. We use photo shop to cut and edit but not to enhance. We also know many computer screens buyers use, vary greatly along with their eye sight. You get the products we sell at a very good price because we buy in bulk. Gems and opals especially need light sometime strong to see their wide ranges of colors and color play. All Gemstones are 100% Natural Earth Mined Stones unless otherwise stated. Prices given on uncertified items are estimates as per the world market prices. We purchase our gemstones and Jewelry pieces from well-established suppliers throughout the world. I try to describe each Gemstone or Jewelry piece as best as I can. The cost of International Shipping is calculated at $15 for postage and packaging and $10 for INSURANCE.

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