Mineral necessarily constant for all sides, which is a function of its structure; crystallographic weakness renders some directions softer than others. An example of this property exists in kyanite, which has a Mohs hardness of 5½ parallel to [001] but 7 parallel to [100]. The most common scale of measurement is the ordinal Mohs hardness scale. Defined by ten indicators, a mineral with a higher index scratches those below it. The scale ranges from talc, a phyllosilicate, to diamond, a carbon polymorph that is the hardest natural material. The scale is provided below: Lustre indicates how light reflects from the mineral's
Softer, Softest Softer, Softest "Softer, Softest" is a song by American alternative rock band Hole, written by frontwoman Courtney Love and lead guitarist Eric Erlandson. The song was released as the band's eighth single and fourth and final single from their second studio album, "Live Through This", in December 1995. The single was released just as the band finished their extensive touring in 1995. Erlandson and Love are known to have written "Softer, Softest" as early as December 1991 at which time it was performed live during the band's tour of the United Kingdom in winter 1991. Originally known as "Pee Girl",