1 Physical Properties
1.1 Tenacity
1.4 Solubility
Not Available
Not Available
1.6 Durability
Not Available
Not Available
1.7 Specific Gravity
1.8 Fracture
Sub-Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
ConchoidalGemdat.org, Uneven
1.9 Cleavage
none
{111} Indistinct, {111} Indistinct, {111} Indistinct
1.10 Mohs Hardness
1.16 Chemical Composition
Cu2H2Si2O5(OH)4
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)