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Loose gemstone

Quartz - Amethyst

Every stone is one of a kind. We quote on request - with full detail on origin and treatment.

Details

Carat
0.42 ct
Cut
Oval Brilliant cut
Shape
Oval
Cutting style
Brilliant cut
Colour
Violet
Clarity
Loupe-clean (IF)
Treatment
Untreated
Origin
unknown
Stone number
7910
All gemstones
· Mineralogy ·

Amethyst

Amethyst shows violet in every depth - from soft lilac to saturated purple. It is the noblest member of the quartz family and was reserved for kings and cardinals for centuries.

7
Mohs hardness
trigonal
Crystal system
1.544 - 1.553
Refractive index
Untreated
Natural stone

Properties

Mineral group
Quartz
Chemical formula
SiO₂
Colorant
iron (activated by natural irradiation)
Crystal system
trigonal
Hardness (Mohs)
7
Density
approx. 2.65 g/cm³
Refractive index
1.544 - 1.553
Optical character
anisotropic, uniaxial positive
Birefringence
0.009
Dispersion
0.013
Pleochroism
weakly dichroic: violet / reddish violet
Fluorescence
inert
Luster
vitreous

Why this stone

Deep color at an honest price, with hardness that stands up to daily wear: a stone with presence that never shouts.

Tradition

Amethyst is associated with clarity, calm, and composure. It is said to settle the mind and keep a cool head.

Care

Color can fade with strong heat and prolonged sunlight - avoid permanent exposure to direct sun.