藍寶石，是剛玉寶石中除紅色的紅寶石之外，其他顏色剛玉寶石的通稱，主要成分是氧化鋁（Al2O3）。藍色的藍寶石，是由於其中混有少量鈦（Ti）和鐵（Fe）雜質所致；藍寶石的顏色，可以有粉紅、黃、綠、白、甚至在同一顆石有多種顏色。

        附瑞士SSEF證書﹙編號90912，日期2017年3月14日﹚指藍寶石及變色藍寶石產地為斯里蘭卡，未經加熱處理。

        Sapphire, in addition to the red ruby in the corundum gemstone, is the general name of other color corundum gemstone, the main component is alumina (Al2O3). The blue sapphire is caused by a small amount of titanium (Ti) and iron (Fe) impurities. Sapphires can be pink, yellow, green, white, or even multiple colors in the same stone.

        Attached is Switzerland SSEF certificate no. 99912, dated March 14, 2017.