Amethyst
ZOE GEMS / CRYSTAL ENCYCLOPEDIA
Amethyst
Chakra Connections
Cultural symbolism · not a scientific property
ZG-QTZ-AMETHYST · Purple Quartz
Mineralogy
Amethyst is purple quartz, sharing its mineral identity with colorless rock crystal. It is a variety of a mineral species, rather than a separate mineral species.
- Formula
- SiO2 Source: gia-properties
- Mineral
- Quartz Source: gia-properties
- Hardness Mohs
- 7 Source: gia-properties
- Refractive Index
- 1.544–1.553 Source: gia-properties
- Specific Gravity
- 2.66; GIA gemological reference value, not a test of individual beads Source: gia-properties
- Crystal System
- Trigonal Source: museum
Reference values describe the mineral. They are not laboratory results for an individual product.
How Color Forms
Iron-related defects and irradiation are involved in its purple coloration. Color may be uneven within a crystal; a photograph is not a reliable treatment test.
Varieties & Names
Pale and deep purple material belong to the same variety. Trade descriptions of color quality should not be treated as laboratory grades or verified geographic origins.
Localities
Brazil is a major amethyst locality discussed by GIA. Locality information describes mineral occurrences, not the documented source of an individual Zoe Gems bead.
Identification & Treatments
Natural and laboratory-grown amethyst exist. Heat can alter quartz colors. A visual check for inclusions is not by itself proof of natural origin or an absence of treatment.
Care
For finished bead jewelry, begin with a soft cloth and follow the instructions for the whole piece, including cord, metal and any coatings. Avoid impacts and sudden heat changes. Do not use abrasive home authenticity tests; they can damage a finished surface.
CULTURE & PERSONAL MEANING
Cultural Symbolism
Zoe Gems uses third eye and crown as contemporary symbolic connections. The Five Elements association is an editorial cultural interpretation. These are personal meaning-making frameworks, not measured mineral properties or evidence of medical benefit.
Five Elements Connections
These associations are not treatments and do not replace healthcare.
Related Jewelry
Sources & Editorial Review
- Mindat: Quartz (indexed reference; full page access limited) [quartz]
Mineral identity and varieties - GIA: Amethyst [gia]
Variety description, naming and occurrence context - GIA: Amethyst care and cleaning (quartz jewelry precautions; assembly care is Zoe Gems guidance) [care]
Hardness, heat and cleaning precautions; not a certification of other components - Australian Museum: Quartz [museum]
Crystalline quartz properties, variety names and Australian occurrences - GIA: Quartz variety reference properties (Amethyst) [gia-properties]
Quartz composition, hardness, refractive index and gemological specific gravity
Checked 2026-10-30 · Zoe Gems editorial research. This is an editorial reference, not an identification report for a specimen.