Lemon Quartz
- Quartz species; hexagonal (trigonal) crystal system; chemical composition SiO2
- transparent to semi- translucent
- Bright Yellow to Pale Green
- Natural material whether natural material, quartz, with heat and irradiation treatment
Identification:
- Optic Character: DR uniaxial positive or AGG (depending on variety)
- Refractive Index: 1.544-1.553 (very constant)
- Birefringence: .009 (may not be detectable in aggregate varieties) Dispersion: .013
- Specific Gravity: 2.66 (+.03.-.02)
- Polish Luster: vitreous Fracture: conchoidal to uneven or granular (in aggregates)
- Luster: vitreous
- Cleavage: none
- Hardness: 7
- Toughness: good
Enhancements:
- Method: irradiation
Effect: produces lemon quartz from rock crystal
Detection: undetectable
Stability: excellent
Special Care Instructions: none
- Method: heat treatment
Effect: lightens color of very dark smoky quartz; produces green quartz from some amethyst
Detection: undetectable
Major Source: Brazil.
Stone information is reference from
Gem Reference Guide, Published by GIA. ISBN 0-87311-019-6
Gemstones of the World, Published by Sterling Publishing Co., Inc NY, ISBN 1-4027-4016-6
Encyclopedia of GEMSTONE, Published by ISHINSHA CO., LTD. ISBN 978-986-251-831-1