I know - isn't it stunning?!
 
2 equal rows of high crowned table cut natural diamonds (some with some Peruzzi-like reflected X shapes) in original Georgian gold setting. In case you hadn't figured, this has my heart. 
 
Tested as 18ct gold, unmarked.
Weight approx 4.28g
Diamonds tested as natural, earth mined diamonds, total estimated weight approx 2.30ct in total, calculated in setting.
Width at front approx 7mm 
Width at back approx 1.8mm
Finger size UK N (Approx USA size 6.5) - I don't recommend resizing on this one, due to the fine nature of the setting. 
 
Very good antique condition, considering this is approx 200 years old, it has some surface wear commensurate with age. 
The settings are closed back, so I recommend this is kept away from moisture.