Ring Silver 925 and semi-precious stone Moonstone Rainbow Natural semi-precious stone Transparent white color with blue reflections Oval stone Dimensions: Length 14mm x Width 10mm x Height 6mm approximately Dimensions Ring: Length 23mm x Width 18mm x Height 8mm approximately Width ring 2-3mm approximately Stone set in 925/1000 Silver Size 57-58 (or 52) Model "N124" available in other stones