Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
Perfect {010} imperfect {100}
{110} Distinct, {001} Indistinct, {100} Indistinct