Blue Chalcedony is a highly prized gemstone. The blue variety of Chalcedony occurs only when it does not contain many color-changing impurities. This stone is perfect for carving, cutting, crafting, and tumbling, and its rarity may explain why so many Chalcedonies are artificially colored for the market. The most valuable natural specimens of blue Chalcedony bend the light in such a way that they appear to be lit from within.
Hardness:
6.5 - 7
Density:
2.55 - 2.7 g/cm³
On This Page
Properties
Health Risk
Values
Market Price
How to Care
Real vs Fake
Characteristics
Cultural
Common Questions
General Info About Blue Chalcedony
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Physical Properties of Blue Chalcedony
Luster
Waxy
Diaphaneity
Translucent
Colors
Blue
Magnetism
Non-magnetic
Tenacity
Brittle
Cleavage
None
Fracture
Conchoidal, Subconchoidal
Streak
White
Crystal System
Trigonal
Hardness
6.5 - 7 , Hard
Density
2.55 - 2.7 g/cm³, Normal Weight
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Chemical Properties of Blue Chalcedony
Chemical Classification
Silicates
Formula
SiO2
Elements listed
O, Si
Optical Properties of Blue Chalcedony
Refractive Index
1.530-1.543
Birefringence
0.003-0.009
Pleochroism
None
Dispersion
0.013
Optical Character
Biaxial positive
Health Risk of Blue Chalcedony
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What is the hazards of Blue Chalcedony?
Harm Type
Physical Toxicity
Blue Chalcedony in powdered form can be toxic due to its Crystalline Silica content.
Quartz, silica, crystalline silica and flint are non-toxic materials, but very fine dust containing quartz, known as respirable crystalline silicon (RCS), can cause serious and fatal lung disease. Lapidaries should exercise caution when cutting silica.
How to prevent the risks of Blue Chalcedony?
Avoid long-term inhalation of its dust!
Blue Chalcedony is typically non-toxic unless it's in powder form. Long-term exposure to finely ground powder may lead to silicosis. Therefore, when cutting or polishing blue Chalcedony, be sure to wear a dust mask to avoid inhaling its dust.
Discover the Value of Blue Chalcedony
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Rarity
Uncommon
Collection Recommendation
4.2 out of 5
Popularity
3.9
Aesthetic
4.5
Rarity
3.8
Sci-Cultural Value
3.9
The Market Price of Blue Chalcedony
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Rough/Tumbled Price
Smaller Than Hand (0-1.5in)
$2 - $30
Close Hand (1.5-3in)
$30 - $70
Equal To Hand (3-6in)
$65 - $100
Bigger Than Hand (>6in)
$100
How to Care for Blue Chalcedony?
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Durability
Durable
Scratch resistance
Good
Toughness of Blue Chalcedony
Poor
Fair
Good
Excellent
Blue Chalcedony demonstrates excellent toughness owing to its microcrystalline structure, which lacks cleavage, reducing the risk of breakage and ensuring robustness for daily use.
Stability of Blue Chalcedony
Sensitive
Stable
Blue Chalcedony is classified as 'Sensitive' due to its vulnerability to sunlight, heat and chemicals, all of which can potentially alter its attractive appearance.
More Care Tips of Blue Chalcedony
Real vs Fake Blue Chalcedony
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5 Ways to Tell if blue Chalcedony is Real
Fake Alert Level:
Caution Needed
Blue Chalcedony is occasionally mimicked by Glass, Dyed Quartzite, and plastic. It's advisable to buy from reputable retailers and, if possible, request a certificate from a gem testing laboratory for authentication. Here are some handy tips to help you initially discern the authenticity of blue Chalcedony.
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Cultural Significance of Blue Chalcedony
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Uses of Blue Chalcedony
Blue Chalcedony is a tough material that has great appeal for use in jewelry and decorative carved objects, since it is translucent and polishes to a high luster. The blue form of the gem is so rare that this stone features only in custom jewelry designs and isn't typically available in chain jewelers.
Healing Properties of Blue Chalcedony
Blue Chalcedony is considered a powerful healing stone that works on all of the chakras to balance the mind, body, and spirit. It removes negative energy and allows positive energy to flow through. It may help with the emotional healing of grief and despair and is often used during meditation to restore feelings of hope and enthusiasm.
Chakras
Throat, Third Eye
Common Questions People Also Ask
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