Details: Luminite: 12mm round. Turquoise: 10mm x 14mm. Adjustable 5mm ring shank. Fits ring size: 5-10. Luminite has a multi-color sheen. Due to the one-of-a-kind nature of the stone, the color and shape pattern may vary slightly from the image shown. Handcrafted in .950 sterling silver by artisans in Mexico. All charles albert pieces are signed/hallmarked.