Antique 18k sapphire old mine diamond cluster ring

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Antique 18k sapphire old mine diamond cluster ring.

Diamonds: 12 chunky old mine diamonds ~1 ctw, G/H/I, VS/SI

Sapphire is about 1.07ct, 7.8mmx5.7mmx2.87mm, genuine sapphire with minor inclusions (not synthetic).

Metal and hallmark: Marked 18 and tested as always.

There is also some maker' mark on the inside.

Weight: 7.22 grams of heavy weight.

Ring size 4.75 and resizable.

Very fine condition with minor wear.