[WildflowerWeb]

Here's one of my Jewel Clan/Tribe OCs, Marcasite, twin(ish) sister to Pyrite. She's also an outcast, because the mineral/"gem" Marcasite



There are only 3 differences:
1. Crystal system (Pyrite: Cubic :: Marcasite: Orthorhombic
2. Specific Gravity (density) (Pyrite: 5.0 :: Marcasite: 4.9)
3. Streak/mineral powder (Pyrite: Greenish-black to brownish black :: Marcasite: Gray to black)

Wow, science lesson...