Gemstones: Lab Created Ruby, 4 pieces, Round Shape, 3.00mm. Lab Created White Cubic Zirconia, 4 pieces, Round Shape, 3.00mm. Lab Created Blue Sapphire, 4 pieces, Round Shape, 3.00mm. Gemstones have a vibrant rich color and eye clean clarity. Pendant is in Sterling Silver with .925 stamp and measures 1 3/8 x 1/4 inches and weighs 2.40 grams. Pendant features top quality workmanship and a beautiful finish. .