JOTW 2 Pieces of Green Similated May Birthstone Round Pendant with an 18 Inch Link Necklace (B-2088) THIS PRICE IS FOR TWO NECKLACES! This adjustable necklace measures 18 to 21 inches. This pendant measures .65 inches from left to right and 1 inch from top to bottom. This pendant is the color of the birthstone, not the actual birthstone. Great Quality Jewelry!