There is blue – and then there is cobalt blue. Anyone who has seen both side by side knows: this is not a matter of degree. It is a different category entirely.
Cobalt is responsible for the intense blue that appears to radiate from within the stone. Tanzania is one of the very few places on earth where these stones are formed. This one comes from there.
3.61 carats. 10.48 × 9.22 mm. A stone that commands the room in any setting. The oval cut is generous and open, giving the color exactly the surface it needs to perform. Very minor inclusions – confirmed by the Swiss laboratory GFCO – and no indications of thermal treatment. Which means this color is entirely natural. Untouched. Exactly as it came from the ground.
The GFCO certificate documents the origin, quality, and untreated status of the stone – a solid foundation for a confident purchase.
Cobalt spinel of this size, in this color, from Tanzania, untreated – this is not an everyday stone. It is the kind of stone you acquire when you understand exactly what you are looking at.
