Topaz, Sky Blue
Gemstone Type: Topaz Gemstone Color: Sky Blue Gemstone Shape: Pear Country of Origin: Africa Transparency: VVS Condition: Small chipped Size […]
Gemstone Type: Topaz Gemstone Color: Sky Blue Gemstone Shape: Pear Country of Origin: Africa Transparency: VVS Condition: Small chipped Size […]
Gemstone Type: Opal Gemstone Color: Black Gemstone Shape: Oval Cabochon Country of Origin: Ethiopia Transparency: Opaque Condition: Size (mm): 10.0 […]
Gemstone Type: Opal Gemstone Color: Yellow Gemstone Shape: Trillion Country of Origin: Ethiopia Transparency: SI1 Condition: Size (mm): 11.8 x […]
Gemstone Type: Opal Gemstone Color: Clear Gemstone Shape: Oval Country of Origin: Ethiopia Transparency: SI1 Condition: Size (mm): 7.0 x […]
Gemstone Type: Aquamarine Gemstone Color: Blue Gemstone Shape: Octagon Country of Origin: Africa Transparency: VVS Condition: Size (mm): 4.5 x […]
Gemstone Type: Sapphire Gemstone Color: Blue Gemstone Shape: Pear Country of Origin: Ceylon Transparency: SI1 Condition: Small chipped Size (mm): […]
I’ve been working on trying to understand how the different types of silicon dioxide (SiO2) are named.
This is a presentation I gave to the Ozark Mountain Gem & Mineral Society on 25 April 2022. Please click […]
Collection Mineraloids Non-Silicates Arsenates Arsenides Borates Carbonates Halides Molybdates Sulfides Silicates Cyclosilicates Inosilicates Neosilicates Phyllosilicates Sorosilicates Tectosilicates […]
Collection Mineraloids Non-Silicates Arsenates Arsenides Borates Carbonates Halides Molybdates Sulfides Silicates Cyclosilicates Inosilicates Neosilicates Phyllosilicates Sorosilicates Tectosilicates […]
Collection Arsenates Arsenides Borates Carbonates Collection Cyclosilicates Dinosaurs Geologic Time Halides Inosilicates Maps Michigan Mineraloids Mineraloids Molybdates Neosilicates Non-Silicates Opinion […]