Blue and light-blue spinel

Set of blue and purple pear-cut spinels 2.12 ct, Burma

Cushion cut blue spinel 1.66 ct, Burma

Cushion cut Burmese bluish gray spinel 1.04 ct

Asscher Cut Blue Spinel Set 1.80 ct

Cushion cut dark blue spinel 2.79 ct, Burma

Burmese blue cushion cut spinel 2.00 ct

Blue spinel in cushion cut 1.75 carats

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

Rare cobalt blue spinel in octagon cut 2.11 carats, Tanzania

Unique cobalt blue cushion cut spinel from Tanzania 7.08 ct, GRS

Octagon-cut cobalt blue spinel 1.05 carats, Tanzania

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

Cobalt blue spinel in octagon cut from Tanzania 1.49 carats

Set of cobalt blue spinels in pear cut 2.02 carats, Tanzania

Blue cobalt cushion cut spinel 1.50 carats, Tanzania

Intense cobalt spinel in radiant cut 1.12 ct, Tanzania

Blue oval cut spinel 1.16 ct, Tanzania

Intense blue-violet spinel cushion shape 4.09 ct, Burma

Pair of greyish blue asscher cut spinels 0.61 ct

Pair of blue and cyan spinels in Asscher cut 0.57 ct

Burmese blue gray spinel in cushion cut 1.12 ct

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

Set of purple-blue Burmese spinel 2.18 ct

Asscher Cut Greyish Blue Spinel Set 1.69 ct

Octagon cut cobalt blue spinel 1.35 ct, Tanzania

Cobalt blue spinel from Tanzania 3.51 ct

Asscher cut blue steel spinel set 2.51 ct

Set of blue and cyan spinels in Asscher cut 1.87 ct

Unique octagon cut cobalt spinel 1.65 ct, Tanzania

Blue-gray Burmese round cut spinel 0.92 ct

Burmese blue-grey heart cut spinel 4.20 ct

Spinel blue with a greenish tint 2.01 ct, Burma

Heart cut blue spinel 3.36 ct, Tanzania

Burmese Violet Gray Heart Cut Spinel 3.10 ct, GFCO

Heart cut bluish gray spinel 2.22 ct, Burma

Heart cut bright blue spinel 2.11 ct