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Hambergite is an often colorless gemstone named in honor of Swedish mineralogist A. Hamberg. While it is durable enough to wear in jewelry, hambergite is most commonly seen in specimen form. Rarely is a specimen flawless, and it can be easily confused with colorless quartz since they are similar in appearance. A unique characteristic of hambergite is its prefect cleavage that makes faceting into a gemstone very difficult for cutters.

Hambergite Polished
Hambergite Classification
Common Name Hambergite
Species Hambergite
Hambergite Optical Properties
Transparency Transparent - Translucent
Dispersion Strength: Weak Fire Value: 0.015
Refractive Index 1.553-1.631
Birefringence 0.071- 0.080
Optic Character Biaxial
Optic Sign Positive
Polariscope Reaction Aggregate (AGG), Doubly Refractive (DR)
Fluorescence SWUV: inert to weak yellowish white
LWUV: Inert to weak orange
Pleochroism Unobservable
Hambergite Characteristic Physical Properties
Hardness 7.5
Streak White
Specific Gravity 2.330-2.370 Typical:2.350
Toughness Poor
Luster Vitreous
Fracture Conchoidal
Cleavage Perfect, in one direction, Good, in one direction
Hambergite Chemistry & Crystallography
Chemical Name beryllium borate
Chemical Formula Be2BO3(OH)
Crystal System Orthorhombic
Chemistry Classification Borate

Hambergite Colors

  • Yellow Hambergite Yellow
  • White Hambergite White
  • Colorless Hambergite Colorless
  • Gray Hambergite Gray

Countries of Origin

Myanmar; Afghanistan; Argentina; United States of America (the); Czechia; Japan; Madagascar; Portugal; Canada; Mozambique; Pakistan; Norway; China; Russian Federation (the); Italy; Australia; Nepal; Tajikistan


Normal care

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Tim Matthews


Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.