List of Rocks

July 2024: Celestine

July 2024: Celestine

Chemical Formula: SrSO4 Moh's Hardness Scale: 3.0 to 3.5 Celestine, AKA celestite, is a lovely sky-blue mineral that takes its name from the heavens. These crystals are made of strontium...

July 2024: Celestine

Chemical Formula: SrSO4 Moh's Hardness Scale: 3.0 to 3.5 Celestine, AKA celestite, is a lovely sky-blue mineral that takes its name from the heavens. These crystals are made of strontium...

June 2024 - Epidote

June 2024 - Epidote

Chemical Formula: Ca2(Al,Fe3+(Al2O)(SiO4)(Si2O7)(OH)) Moh's Hardness Scale: 6 Epidote is a super common crystal that can be found in tiny amounts just about everywhere. Depending on the mineral inclusions, it can...

June 2024 - Epidote

Chemical Formula: Ca2(Al,Fe3+(Al2O)(SiO4)(Si2O7)(OH)) Moh's Hardness Scale: 6 Epidote is a super common crystal that can be found in tiny amounts just about everywhere. Depending on the mineral inclusions, it can...

May 2024 - Pyrite

May 2024 - Pyrite

Locality: Ojuela Mining District, Mexico Chemical Formula: FeS2 Moh's Hardness Scale: 6 to 6.5 Pyrite has built up a bit of a bad reputation over the years. Because it looks...

May 2024 - Pyrite

Locality: Ojuela Mining District, Mexico Chemical Formula: FeS2 Moh's Hardness Scale: 6 to 6.5 Pyrite has built up a bit of a bad reputation over the years. Because it looks...

April 2024 - Topaz

April 2024 - Topaz

Locality: Thomas Range, Utah Chemical Formula: Al2SiO4(F,OH)2 Topaz is the one of the hardest minerals on the Mohs scale, but that doesn’t mean they’re the most durable. And it’s all...

April 2024 - Topaz

Locality: Thomas Range, Utah Chemical Formula: Al2SiO4(F,OH)2 Topaz is the one of the hardest minerals on the Mohs scale, but that doesn’t mean they’re the most durable. And it’s all...

March 2024 - Almandine Garnet

March 2024 - Almandine Garnet

People have been using garnets in jewelry since the time of the Egyptian pharaohs. They’re typically dark red, but garnets can come in a range of colors from yellow to...

March 2024 - Almandine Garnet

People have been using garnets in jewelry since the time of the Egyptian pharaohs. They’re typically dark red, but garnets can come in a range of colors from yellow to...

February 2024 - Tourmaline

February 2024 - Tourmaline

Mineral Name: Cyclosilicate Locality: Himalaya Mine, California Tourmaline is a kind of silicate crystal that comes in tons of colors, depending on what minerals get mixed in while the crystal forms. Some...

February 2024 - Tourmaline

Mineral Name: Cyclosilicate Locality: Himalaya Mine, California Tourmaline is a kind of silicate crystal that comes in tons of colors, depending on what minerals get mixed in while the crystal forms. Some...