Octagon cut Blue and light-blue spinel

Octagon-cut cobalt blue spinel 1.05 carats, Tanzania

Rare cobalt blue spinel in octagon cut 2.11 carats, Tanzania

Pair of electric blue cobalt spinels in octagon cut 2.11ct, Tanzania

Cobalt blue spinel 1.47 ct in octagon cut from Tanzania

Cobalt blue spinel in ascher cut 0.92 carats, Tanzania

Сobalt blue spinel in octagon cut 1.01 ct from Tanzania

Pair of blue octagon cut spinels 0.89 ct, Burma

Asscher Cut Blue Spinel Set 1.80 ct

Cobalt blue spinel in octagon cut from Tanzania 1.49 carats

Octagon cut cobalt blue spinel 1.35 ct, Tanzania

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