This is a Chanel Ring. SA rank: Polished It is a beautiful item.
Brand name: Chanel
Model name: Comet Star Swing Drop Ring
Size: 52
Actual size: 12 Ring
Width: 0.3 cm (0.12 in): 6.8 g
Accessories
None
Material
750WG Diamond

Condition Guide:
S: Like new by the store's standards
SA: Almost unused, overall pristine
A: Excellent condition
AB: Great condition, minor signs of use
B: Good condition, signs of wear from normal use
C: Noticeable scratches, dirt, or signs of use
D: Heavily damaged or in need of repair
Item with difficulty being called C: