Vintage Sterling Silver & Marquise CZ Diamond Ring, Cubic Zirconium, Cathedral Setting, Statement Ring, Thailand 925, Size 8 1/2 US ceramic and the gold-tone metal is

and the gold-tone metal is most likely a gild silver

Given their approximate age

It has a red gemstone eye

Width: 33mm

but it remains to be skillfully hand-made piece

Vintage Sterling Silver & Marquise CZ Diamond Ring, Cubic Zirconium, Cathedral Setting, Statement Ring, Thailand 925, Size 8 1/2 US ceramic and the gold-tone metal isStrikingly beautiful sterling silver cubic zirconium ring. Featuring a marquise cut CZ diamond in a cathedral setting and a simple silver band with flattened front edges. The ring is marked 925 CZ Thailand on the inner band and is in good vintage condition with some tarnishing and minor wear. Ring size 8 1 2 US CZ diamond measures approx. 16mm L x 7mm W Weight: 4. 7 grams