I love sardonyx, it's definitly my favourute type of agate. I can't get enough of the powdery lilac top and the peep of orange glow from underneath.
 
The setting on this one is so sweet with those tiny little claws offset by knife edge shoulders; gorgeous.
 
Materials - 9ct gold and sardonyx
Hallmarks - 9CT
Country of origin - England
Size - UK U / US 10 - can be resized substantially
Weight - 2g
Condition - excellent antique condition with very minor wear to note