Oval cut Cobalt Blue Spinel

Cobalt Blue spinel in oval cut 1.59 carats, Tanzania

Cobalt blue spinel in oval cut 6.04 carats, Tanzania

Intense blue cobalt spinel in oval cut 1.08 carats, Tanzania

Extremely rare cobalt spinel 0.51 ct, Vietnam, Lotus

Unique collector's cobalt spinel with Electric blue color in oval cut 7.10 carats, Tanzania

Unique GRS type Peacok blue cobalt spinel in oval cut 1.52 carats, Tanzania

Super rare Mahenge cobalt blue spinel in oval cut 3.02 carats, Tanzania

Rare electric blue cobalt spinel from Tanzania in oval cut 5.34 ct