An important, vintage, 4.21ct old mine cut diamond ring in 18ct yellow gold. Diamond measures, 10.18 mm x 10.65 mm x 6.36 mm, estimated 4.21ct, M colour, SI2 clarity, in a six claw setting, and plain band. Ring size M approximate (sizing beads). Finished weight 8.83 grams. Please note: wire under setting May need attention.