Cobalt Spinel

Cobalt spinel is among the rarest gems on earth — its electric blue glow comes from trace cobalt rather than iron, a colour found in only a handful of deposits worldwide. Ceylon cobalt spinels are especially prized by...

1.11 ct

4.38 ct

1.11 ct

1.66 ct

1.03 ct

1.67 ct

3.04 ct

A spectrum drawn from the current keeping