Azurite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
3.5 – 4.0
Specific Gravity
3.7 – 3.9
Refractive Index
1.72 – 1.85
Crystal System
Monoclinic
Luster
Vitreous
Cleavage
Indistinct
Fracture
Conchoidal
Color
various
Birefringence
0.108
Pleochroism
Distinct: dark-blue - light blue
Mohs Hardness
Mohs Hardness: 3.5 – 4.0
1 Soft10 Hard
Crystal System
Value & Market
Price Tier
Budget (< $50/ct)
Where to Buy Azurite
Blue Nile
Fine jewelry retailer
James Allen
Gemstone jewelry
Brilliant Earth
Ethically sourced gems
Amazon
Wide selection
Links may earn a commission at no extra cost to you.
Treatments
May be coated with colorless wax - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 3
3.5 to 4Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
3.70 to 3.90Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
BrittleWalter Schumann, Gemstones of the world (2001)
IndistinctWalter Schumann, Gemstones of the world (2001) More from other references
ConchoidalArthur Thomas, Gemstones (2009)
Sensitive to heat.Arthur Thomas, Gemstones (2009)
Bright light may reduce its colour.Arthur Thomas, Gemstones (2009)
1.720 to 1.850Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) BlinkingMore from other references
Biaxial/+Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
0.108 to 0.110Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) DoublingMore from other references
Distinct: dark-blue - light blueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
VisibleArthur Thomas, Gemstones (2009)
Dark blue, azure blueWalter Schumann, Gemstones of the world (2001) More from other references
Blue, Cu2+ in elongated octahedral coordinationW. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011)
Transparent,Translucent,OpaqueWalter Schumann, Gemstones of the world (2001) More from other references
VitreousArthur Thomas, Gemstones (2009)
NoneWalter Schumann, Gemstones of the world (2001)
MonoclinicHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Azurite is found in the oxidized zones of copper deposits and is very often intimately associated with malachite to the extent that the name azur-malachite has been used.Michael O?Donoghue, Gems, Sixth Edition (2006)
Common as banded aggregate in wavy pattern: often intergrown with malachite - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 3
Azurite information at mindat.org
France
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 386
Namibia
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 386
Peru
USA
No reference listed
About Azurite
Azurite is a vivid deep blue copper carbonate mineral, often found alongside green malachite in the oxidized zones of copper ore deposits. Revered throughout history as a pigment—known as 'blue bice' or 'mountain blue'—it was ground into paint for medieval manuscripts and Renaissance paintings before synthetic blues became available. Polished nodules and cabochons displaying swirling blue and green patterns alongside malachite are highly prized ornamental stones.
Jewelry Use
Durability
2/10
Science FYI Family
Frequently Asked Questions
What is Azurite?
Azurite is a vivid deep blue copper carbonate mineral, often found alongside green malachite in the oxidized zones of copper ore deposits. Revered throughout history as a pigment—known as 'blue bice' or 'mountain blue'—it was ground into paint for medieval manuscripts and Renaissance paintings befor
What is the hardness of Azurite?
Azurite has a Mohs hardness of 3.5 to 4.0, making it relatively soft for use in jewelry.
What color is Azurite?
Azurite is primarily Various.
How much does Azurite cost?
Azurite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Azurite?
Azurite belongs to the Monoclinic crystal system.