Sapphires that are 10x8mm or larger are generally referred to as big sapphire gems but, the YSAP17 from Siamhin, is not just that big - it is a shade larger than 11x9mm. Mined in Madagascar and cut and polished in Thailand, this large yellow sapphire gem has dimensions of 11.4x9.3mm and a proportionate depth of 4.3mm. Almost 90% of sapphires that enter the gem markets are heated to enhance their color and clarity, the same is true of this big sapphire gemstone too. Our experts recommend setting this big gem in a pendant or an extravagant ring. Siamhin can custom cut an entire set of matching gems for you and this, makes it easy for you to request for an entire jewelry set to be custom made. See more details of the YSAP17 yellow sapphire gem at http://siamhin.com/ysap17-big-yellow-sapphire-gem-1101.php