We have repurposed part of an antique gold cufflink, and set it with a pearshaped rose cut salt and pepper diamond to give it a fresh lease of life. 
We have added a generous 6m  jump ring, so it should slip onto most chains with ease. 
Stamped and tested 18ct gold 
Weight approx 2.57g 
Total drop approx 25mm
Width approx 13mm
Diamond 0.20ct
Very good antique condition