Posts tagged: geology
Garnets are a group of semi-precious gemstones that come in a wide range of colours. Chemically, they are silicates, and based on the combination of metal ions, they are separated into several species.
Today’s post is Grossular (calcium/aluminium) and Pyrope (magnesium/aluminium).
There are a few varieties of Grossular, based on colour:
- Hessonite (“Cinnamon Stone”) — brown/red to orange/yellow
- Rosolite — pink
- Tsavorite — green
Pyropes come in various shades of red, ranging from cherry red to purplish hues to almost black.
Here you can find the previous posts in the garnet series:
(The “Goodie of the Day” is a more or less daily feature of my tumblr. This can be anything that’s likely to improve my mood, and I hope it works the same way for some of you. Enjoy!)
Bright yellow Smithsonite
Tsumeb Mine, Namibia
Smithsonites (all colors)
Azurite crystal cluster
Muzo Mine, Boyaca Dept., Colombia.