Opal Oval Shape Cabochon. Weight: 4.09 ct Size: 13.01 x 9.78 x 6.38 mm Color: White base with a vivid play of colors. Luster: Multicolor. Treatment: No indications of treatment. 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 ‘a multicolor’. October’s birthstone, Opal is from the Greek ‘opallios’, meaning ‘to see a change ALGT Certificate Report no. 24830524. Shipment with a reliable service provider will be trackable and will be insured. Duties and taxes will be the Buyer's responsibility. Pictures were taken under white and yellow light with magnification on different backgrounds, to display as accurately as possible, Tried our best to capture as real colors as possible, but they may slightly differ.