This is a K18 morganite (3.91ct) diamond ring. The size is size 15. Size: Length approx. 20mm Width approx. 10mm The back is stamped with k18 K18WG 3.91 D0.42. A teardrop-shaped morganite ring. An elegant and very lovely ring. ⚠Please refrain from purchasing if you are looking for something like new. Please understand that this is a used item before purchasing.