Carnelian Vs. Pyrite

Carnelian is a popular gemstone composed of silicon dioxide.^[1] Pyrite is a very popular gemstone (marcasite) and its chemical composition is iron sulfide.^[2]

Quick Facts on Differences of Carnelian and Pyrite

For a quick recap of the differences carnelian and pyrite:

• While both carnelian and pyrite can be opaque, carnelian can be translucent or transparent.
• For chemical formulas, carnelian is SiO2 while pyrite is FeS2.
• In terms of luster, carnelian is vitreous while pyrite is metallic.
• Carnelian streaks white while pyrite streaks black, black green or green.
• Carnelian can be commonly orange or red while pyrite can be commonly yellow.
• Carnelian's specific gravity is lower than pyrite - carnelian ranges from 2.58 to 2.64 and pyrite ranges from 4.9 to 5.2.

Quick Facts on Similarities of Carnelian and Pyrite

The similarities of carnelian and pyrite include:

• Carnelian's rarity is similar to pyrite.

Summary of Carnelian

Carnelian is a mineral that belongs to the chalcedony group of minerals. It is a translucent to opaque stone that is commonly red, brown, or orange in color. It is often used in jewelry and decorative objects due to its attractive appearance and durability.

Summary of Pyrite

Pyrite, also known as iron pyrite or fool's gold, is a mineral with a metallic luster and a brass-yellow color. It is composed of iron disulfide (FeS2) and is commonly found in sedimentary rocks, metamorphic rocks, and hydrothermal veins. Pyrite is often mistaken for gold due to its color and metallic appearance, but it is much less valuable than gold.

Table Comparison of Carnelian vs Pyrite