Pear Cut Lab Created Blue Sapphire GemstoneThese loose pear faceted cut lab created blue sapphire gemstones are available for a custom built ring by Nodeform Jewelry. Select your stone size, then select a ring setting that fits the shape and size of the selected stone. Add both to your cart and we'll create your ring! The sapphire has a slight color shift from peachy champagne to a pink champagne color in various light conditions Lab created Sapphire Specs: Sizes: 6 x 4 mm 0. 55ct, 7 x 5 mm 1.