Heliotrope
Precious Gemstone
What is Heliotrope?
Heliotrope, also known as bloodstone, is a variety of chalcedony, a cryptocrystalline form of quartz. It is characterized by its dark green color with red spots or inclusions that resemble blood. The red spots are typically iron oxide.
Optical Properties
- Refractive Index
- 1.544-1.553
- Birefringence
- 0.004
- Pleochroism
- None
- Optical Character
- uniaxial (+)
- Dispersion
- 0.013
Heliotrope Market Value Calculator
Estimate the market value of Heliotrope using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Heliotrope Localities Map
See where Heliotrope is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- Dark green with red spots
- Hardness (Mohs)
- 6.5 - 7
- Density
- 2.60 - 2.65 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- Silicon, Oxygen, Iron
Also Known As
HeliotropeBloodstone
FREE APP
4.7
Identify Heliotrope Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you