A magnificent natural colour change cobalt spinel from Sri Lanka, weighing 2.59 carats in a cushion cut. This stone posses an extraordinary colour change property, changing from blue to violet as the stone is moved from daylight to incandescent light, placing it among the most prized gemstones in the world.
Completely unheated and un-enhanced, this spinel’s spectacular colour change phenomenon is driven by natural cobalt and vanadium. At VS clarity and 2.36 carats, this is a collector and investment grade stone.
Details
Colour: Blue > Violet
Carat Weight: 2.36 ct
Dimensions (L x W x H) : 7.23mm x 6.75mm x 5.25mm
Shape: Cushion
Origin: Ceylon (Sri Lanka), Horaketiya, Ratnapura
Treatment: Unheated — Bellerophon report C02012
Cut & Polish by : Facets by Bandu
Certification: C02012
SKU: 2606111344
What Makes It Special
• Colour Change Cobalt Spinel — Natural cobalt-vanadium driven colour change is the most valuable and sought-after colour in spinel, with prices that rival and exceed fine sapphire at comparable quality
• 2.36 carats — Fine cobalt spinels above 2 carats are exceptionally rare; the vast majority of gem-quality examples are well under 1 carat
• VS clarity — Exceptional transparency for a natural unheated cobalt spinel of this size; most examples at this weight carry more inclusions
• Completely unheated — Natural cobalt colour of this intensity without any treatment is as pure as it gets in the gemstone world
• Ceylon provenance — Sri Lanka is one of only a handful of origins producing true cobalt blue spinel, alongside Myanmar and Tanzania
• Investment grade — Unheated Ceylon Cobalt Spinels above 2 carats represent one of the strongest and fastest appreciating value propositions in coloured gemstones today
How to buy
Video call or private viewing in Colombo before you buy. Bank transfer, card payment link, or card and cash in person. Every stone comes with its laboratory report, and is refunded in full if it does not match. Full details
