Oval cut Blue and light-blue spinel

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

Blue oval cut spinel 1.16 ct, Tanzania

Burmese blue gray spinel in cushion cut 1.12 ct

Pair of blue-gray oval cut spinels 1.17 ct, Burma

Pair of spinels 2.59 ct, Vietnam