Pink Star Ruby Gemstones Floating 6-Ray Star (when exposed to sunlight) Solid 925 Sterling Silver Handmade in the USA These pink star ruby stud earrings showcase star ruby gemstones accented by white sapphires. The oval-shaped cabochons display a floating 6-ray star when exposed to direct sunlight, and are set in solid 925 sterling silver stud earring settings (cast in the USA).