Spinel · Collection

Cobalt spinel

Natural blue spinel coloured by cobalt, one of the rarest blues in the gem world. Every stone is sold individually with its independent laboratory report.

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  • Video of Natural Cobalt Spinel Cushion 1.40 ct – Blue Cobalt, No Heat

    Natural Cobalt Spinel Cushion 1.40 ct – Blue Cobalt, No Heat – VDG

    Natural Cobalt Spinel Cushion 1.40 ct – Blue Cobalt, No Heat – VDG
    CHF 3,000.00

    1.40 ctCHF 2,143 / ct
  • Video of Natural Cobalt Spinel Oval 1.20 ct – Blue Cobalt, No Heat

    Natural Cobalt Spinel Oval 1.20 ct – Blue Cobalt, No Heat – VDG

    Natural Cobalt Spinel Oval 1.20 ct – Blue Cobalt, No Heat – VDG
    CHF 3,000.00

    1.20 ctCHF 2,500 / ct
  • Video of Natural Cobalt Spinel Cushion 0.95 ct – Peacock Blue, No Heat

    Natural Cobalt Spinel Cushion 0.95 ct – Peacock Blue, Intense Blue, No Heat – GUILD

    Natural Cobalt Spinel Cushion 0.95 ct – Peacock Blue, Intense Blue, No Heat – GUILD
    CHF 3,000.00

    0.95 ctCHF 3,158 / ct
  • Video of Natural Cobalt Spinel Oval 1.35 ct – Vivid Blue, No Heat

    Natural Cobalt Spinel Oval 1.35 ct – Vibrant, Vivid Blue, No Heat – Bellerophon

    Natural Cobalt Spinel Oval 1.35 ct – Vibrant, Vivid Blue, No Heat – Bellerophon
    CHF 3,000.00

    1.349 ctCHF 2,224 / ct