Cobalt spinel is rare colour variety in Spinel family. Depending on the concentration of cobalt, color saturation…
Spinel is the magnesium aluminium member of the larger spinel group of minerals. It has the formula…
Cobalt Spinel is one of Rare Blue stone in Spinel Family
Danu Group is a Sri Lanka based gemstone company specializing in natural rough and cut gemstones sourced directly from traditional mining regions. Our work connects the origin of each stone with careful selection, skilled craftsmanship, and transparent representation. Every gemstone reflects a journey — from earth to hand — guided by experience, integrity, and respect for nature.
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