Crystal Opal Square Cushion ALGT Certificate Included: Report no. 30310124 Weight: 4,49 ct Size: 12,35 x 12,12 x 5,52 mm Clarity: Transparent Color: Light Gray + play of colors Luster: Multicolor Treatment: natural. Unique to Opal, ‘play of color’ is the attractive flashes of colorful brilliance that change with the angle of observation. An Opal with a play of color with three or more hues is called ‘multicolor’. October’s birthstones, Opal is from the Greek ‘opallios’, meaning ‘to see a change’ Fast Shipment with a reliable service provider will be track-able ! Pictures taken under white light with magnification, to display as accurate as possible, Tried our best to capture as real colors as possible!