Mixed Metal Rings › Indicoful Image 1 of 1 Indicoful $575.00 Satin finish wavy sterling 5/16” wide band with bright 14k gold stripe and indicolite, aka blue tourmaline.Size 7 1/2 Add To Cart Added! Satin finish wavy sterling 5/16” wide band with bright 14k gold stripe and indicolite, aka blue tourmaline.Size 7 1/2