Quartz · Violet
Amethyst
Quiet, regal violet.
Certified · traceable origin
Typical size: 5 – 50 ct · Price on request
Specifications
- Mineral family
- Quartz
- Composition
- SiO₂ : Fe
- Hardness (Mohs)
- 7
- Refractive index
- 1.544 – 1.553
- Crystal system
- Trigonal
- Colour
- Pale lilac to deep violet, coloured by iron and irradiation
- Typical origins
- Zambia · Uruguay · Brazil
Specifications are general gemological references for the species; each stone is assessed and documented individually.
Origin & story
Amethyst is the violet variety of quartz, forming in volcanic geodes and hydrothermal veins. Its colour comes from iron impurities and natural irradiation over geological time.
Zambia and other African sources produce richly saturated material. SOMSTONE handles both specimen-grade clusters and calibrated facet rough.
Documentation
What to expect from a lab report
Where appropriate, stones are submitted to an independent gemological laboratory. A typical identification report records the fields below; values shown here are placeholders for illustration only and do not describe a specific stone.
Illustrative only. Not an actual certificate. Reports are issued by independent laboratories on a per-stone basis.
Sample — illustrative layout
Specifications · Amethyst
Report no. SAMPLE-000000
Date DD · MM · YYYY
- Identification
- Quartz
- Variety
- Amethyst
- Weight
- —.— ct
- Dimensions
- —.— × —.— × —.— mm
- Shape / cut
- —
- Colour
- Pale lilac to deep violet, coloured by iron and irradiation
- Transparency
- Transparent
- Origin opinion
- Subject to laboratory analysis
- Treatment
- Subject to laboratory analysis
- Comments
- Issued with stone-specific measurements and photographs.
Frequently asked
Buyer questions
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