mineral

Quartz with inclusions

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Clear to milky white with reddish-brown hematite/iron inclusions; Luster: Vitreous (glassy); Crystal structure: Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Hardness: 7 on Mohs scale
Luster: Vitreous (glassy)

Identified May 21, 2026More mineral →

Explore Quartz with inclusions in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Formed from hydrothermal solutions or cooling magma in igneous rocks like granite. This specimen shows internal fracturing and mineral staining, typical of geothermal veins.

Uses & applications

Used in gemstone collecting, metaphysical 'healing' crystals, lapidary work for jewelry, and industrial uses in glass manufacturing or electronics due to piezoelectric properties.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Specimens like this one, showing internal veining and reddish iron staining, are often called 'Iron Quartz' or 'Fire Quartz' in collector circles.

Field identification & locations

Identify in the field by its hardness (it can scratch glass), its lack of cleavage, and its vitreous luster. Commonly found in mountainous regions or riverbeds worldwide. This polished piece highlights internal clouds and inclusions.