JunXin Round Cut Black Gold Mystic Big Rainbow Topaz Solitaire Ring Engagement Wedding Size5/6/7/8/9/10/11 Item type: black gold big mystic topaz solitaire ring Main stone diameter: 12mm; Band width: 3-15mm The main mystic topaz was protected by 8 prongs without worrys of losing stones Mystic topaz change its color in different angle or light, if you prefer mystic stone, you can collect this one Great color combination makes you more outstanding, also a wonderful gift in any occasions,they come with free black ring box