.999 Fine Silver Watermelon Tourmaline and Tourmaline Crystal Ring SIZE 5Material: . 999 Fine Silver (99. 9% Silver Content) Stone(s): Genuine watermelon tourmaline, genuine tourmaline crystal Ring Face Dimension: 0. 8 x 0. 4 x 0. 25 inches Weight: 6. 5 grams Ring Size (US): 5 Stamp Mark: CR 999 Origin: USA Serial Number: r25838 . 999 fine silver is whiter in appearance than . 925 sterling silver and tarnishes less. It does not trigger allergies in people sensitive to nickel or other alloys. Tourmaline is a coveted stone