#almandine garnet

[transparentfossil]

11.9" Almandine Garnets in Schist (40+ Garnets) - Austria

[mymineralbox]

’—“”₃₂₄₃—••—•²⁺••“”—’–’

This week's Member Box spotlight: Almandine Garnet -- the deep-red garnet most people picture when they hear "garnet.Fe3Al2(SiO4)3, a magnesium-free iron end-member of the pyralspite garnet series.This raw cluster comes from a schist host rock in Fujian Province, China. The crystals form classic rhombic dodecahedra (12- Chemical formula faced), sometimes modified by trapezohedra (24 faces) -- the most recognizable geometry in the mineral kingdom.

Member Box notes:

Formed under high pressure and temperature in metamorphic rock

- Mohs hardness 7.5 -- tough enough for industrial abrasive (sandpaper garnet!)

- Red color comes from ferrous iron substituting into the octahedral sites

- Distinguishes between almandine vs pyrope vs spessartine by exact iron/aluminum balance

- A classic starter stone for crystal system studies -- isometric, perfect symmetry

Fun geology fact: garnet-bearing schist is a pressure-temperature indicator. If you find crystals like these in the field, you know you're standing on rocks that were once buried 10 to 30 km deep. That's how old, dense collisional mountain belts become accessible at the surface.

[stopdoopyphotos]

[theghostowl]

These crystals hardly seem real.

[poketriodrawsstuff]

Putting some of the Halloween themed gems together for a big group pic!! Although I’ve got much better contenders like Kambaba, Ocean and Fuchsite, I wanted to keep it all to fusions that can all exist at once! Which also means there’s one poor gem left to take care of these spooky gems, who all are bound to cause SOME sort of trouble…

[alicebrightstar]

Prince pearl and Almandine Garnet!🌺🌸✨

The Characters are from Steven universe future era 3 roleplay on roblox!

[snuggablebull]

almandine garnet stimboard

[theanoninyourinbox]

Christmas post FIVE

Some Vintage Art! The original ideas for Moon and Sapphirine were more Pirate and her Minion, but I like Suave Moon and Manic Vee much better! And a peek at their planned fusion, which may get a redesign in the future~