Fergie is a stunning smokey quartz ring set in 9ct yellow gold. 
Metal: 9ct yellow gold, British Hallmarked (QVC 375)
Stone: 1x 4 claw set (chequeredboard crown) rectangular cushion shaped smokey quartz,  colour medium dark, 6.25ct ( 12mm long x 10mm wide)
Weight: 3.53gm
Size: N 1/2
Condition: very good, (minor wear to mount)
Manufacturing standard: medium 
Insurance replacement appraisal: $1900