Astrophyllite cabochon

Astrophyllite cabochon

Size: approx. 29x19mm

Weight: 26.35ct

Tones of grey and black with copper-coloured inclusions.

Astrophyllite is a hydrous potassium iron titanium silicate mineral (easy for you to say!).  With a Mohs’ hardness of 3 it is not suitable for rings or bracelets but can be used in pendants, brooches and earrings. It is a brittle stone and has perfect cleavage – something for the jeweller to respect while setting this stone!

• 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