Our Have A Heart charms are made from recycled materials, repurposing our archived diamonds and using scrap materials. 10% of the proceeds will be donated to charity water. Gemstone: 1.26 Carat of G-H Color White Diamonds ( 144 PCS) Metal: 18K, 6.1 Grams Colors: White Measurements: 18" Adjustable Bolo Necklace, 1/4" Bail, Pendant 7/8" X 3/4" Closure: Lobster