With a hardness of 4-4.5, its brittle nature and good cleavage, this stone is not suitable for rings, bracelets or cufflinks and care needs to be taken when designing for this stone and when working with it.
May have been acid etched.
Hardness – resistance to scratching and wear
Stability – resistance to alteration by light, heat or chemicals
Toughness – resistance to fracture, cleavage or cracking
Please note you will receive the stone in the photograph