mineral

Yellow Howlite (Dyed Magnesite/Howlite)

Dyed Ca2B5SiO9(OH)5 (Howlite) or MgCO3 (Magnesite)

Hardness: 3.5; Color: Bright yellow with dark grey/black veins; Luster: Sub-vitreous to earthy; Crystal structure: Monoclinic (usually massive); SG: 2.45-2.58

Hardness: 3
Color: Bright yellow with dark grey/black veins
Luster: Sub-vitreous to earthy

Identified May 2, 2026More mineral →

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Physical properties

Hardness: 3.5; Color: Bright yellow with dark grey/black veins; Luster: Sub-vitreous to earthy; Crystal structure: Monoclinic (usually massive); SG: 2.45-2.58

Formation & geological history

Formed in evaporite deposits as nodules. This specific specimen is a natural white/grey mineral that has been chemically dyed yellow to mimic more expensive stones.

Uses & applications

Used primarily in costume jewelry, craft beads, and as a decorative stone or 'healing crystal' in metaphysical practices.

Geological facts

Natural howlite is always white or milky grey with dark veins. When dyed bright colors, it is often marketed as 'Turquenite' (blue) or simply yellow howlite.

Field identification & locations

Identify by looking for dye concentrations in cracks. It is much softer than true yellow gemstones like Citrine or Yellow Jasper and can be scratched with a copper penny or steel knife.

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