Size 6
當藍寶石裡的針狀內含物正齊的往三個等角的方向排列,相互交义,被單一集中光源照射時就會產生六射星光反應,被稱為星光藍寶石。針狀內含物的數量必需足夠讓藍寶石出現星光反應,但又不能過多影響到寶石的透明度。此顆星光藍寶石來自緬甸礦源,星光反應明顯,透亮吸引,算得上是上佳的例子。A sapphire displays asterism, a six-rayed star, when there are tiny needle-like rutile inclusions growing in three orderly directions intersecting each other. Yet it is very difficult to have just the right amount of rutile needles present to create a distinct star effect and at the same time not too many that it would affect the stone’s visual transparency. This present is an excellent example of a gem-quality star sapphire that originates from Burma.