1.05 carats Cobalt Blue Spinel.

£3,150.00

Eric says:” This is a fine specimen of this rare precious stone variety. The attractive bright blue colour is due to the presence of cobalt atoms within the crystal makeup. I just love this variety and I had to purchase it when I saw it during my travels. The gem is well fashioned, having superb colour and brilliance”.

1.05 carats, oval mixed cut, measuring 6.37 × 5.33 × 4.34 mm. Accompanied by a Bellerophon, Paris gem report R-202246304, 2 Mar 2022, stating ‘No indications of any treatment’. Origin ‘Tanzania ~650 million years old’. Click here for report image,

Eric says:” This is a fine specimen of this rare precious stone variety. The attractive bright blue colour is due to the presence of cobalt atoms within the crystal makeup. I just love this variety and I had to purchase it when I saw it during my travels. The gem is well fashioned, having superb colour and brilliance”.

1.05 carats, oval mixed cut, measuring 6.37 × 5.33 × 4.34 mm. Accompanied by a Bellerophon, Paris gem report R-202246304, 2 Mar 2022, stating ‘No indications of any treatment’. Origin ‘Tanzania ~650 million years old’. Click here for report image,

A coloured stone that rivals sapphire in beauty — yet stands in a class of its own. This vibrant cobalt blue spinel, sourced from the rich gem gravels of Tanzania, boasts a colour so electric it almost glows.

🔹 Unheated, untreated in any way
🔹 Rare cobalt-rich composition
🔹 Exceptional brilliance
🔹 Sought after by gem collectors worldwide

Unlike many blue gemstones, cobalt spinel achieves its vivid hue naturally — no heat, no enhancements. Just pure, natural magic formed over millions of years. 💙

A treasure for connoisseurs and a showstopper in fine jewellery.


#CobaltSpinel #TanzanianGemstones #RareGems #NaturalBeauty #SpinelLove #GemstoneAddict #BlueGemstones #CollectorsGem #UnheatedGem

Check out a video of the gem here:

Feel free to WhatsApp me to discuss this cobalt blue spinel. I can video chat with you to show you the gem and/or book an appointment to see it in Hatton Garden at my place of work.

WhatsApp Eric
WhatsApp Eric