Jet
What is Jet?
Jet is a black-colored gemstone that is a type of lignite coal and inspired the phrase "jet black". It was used by the Romans for creating jewelry, and the most famous type of jet was found in Whitby, England. It was often used during times of grieving. Queen Victoria wore it after Prince Albert's death.
Uses & Applications
Jet was often worn by the ancient Romans, but its use dates back to the Neolithic period. It is still popular in jewelry today. Most notably, the Roman author Pliny the Elder is said to have always worn the stone. The hard rock is also carved into small sculptures and figurines. Jet is occasionally worn by some members of the British Royal family. Its popularity increased after it was presented as a gift to Queen Elizabeth II.
Healing Properties
Jet is a grounding stone that resonates with the Third Eye chakra. Used during meditation, its calming energy helps to heal emotions and provide spiritual guidance. It is often used to help with goal setting, motivation, and achievement. It is a powerful stone that can be worn or kept in the home for greater balance and harmony.
Optical Properties
- Refractive Index
- 1.640-1.680
- Pleochroism
- None
- Optical Character
- Isotropic
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Jet before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Jet Localities Map
See where Jet is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
The Meaning
Since ancient times, jet was considered a stone of protection. For example, the ancient Romans believed that the stone could ward off evil spirits. Travelers wore the stone on their journeys and warriors used it as a talisman during their battles.
Associated Chakras
Quick Facts
Physical Properties
- Color
- Black, dark brown
- Hardness (Mohs)
- 2.5 - 4
- Density
- 1.12 - 1.52 g/cm³
- Streak
- Brown
- Luster
- Sub-metallic, Vitreous, Dull
- Crystal System
- Amorphous
Chemical Properties
- Elements
- C, O, S, H
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Jet FAQs
How do I identify Jet?
Jet can be identified by its hardness of 2.5 - 4 on the Mohs scale, Black color, Sub-metallic, Vitreous, Dull luster, Amorphous crystal system. Look for these key characteristics when examining specimens.
What color is Jet?
Jet typically appears in Black, dark brown. Color can vary depending on impurities and formation conditions.
How hard is Jet?
Jet has a hardness of 2.5 - 4 on the Mohs scale. This makes it a soft mineral that can be scratched easily.