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HAMBERGITE                              NATURAL COLOR                              Hardness 7.5 

 

  Enlarge   7.02 cts. Hambergite cushion  single 

 13.4 x 13.1 mm. Depth: 8.3 mm.

Slightly included. Enhancement: none (N) Untreated

stone PRICE  

USD  1895.00

ORIGIN: Madagascar

ref:Hac 702 

 

   2.05 cts. Hambergite emerald cut  single 

  10.7 x 6.6 mm. Characteristic needles.  

 Slightly included.Enhancement: none (N) Untreated

stone PRICE  

USD 410.00 

ORIGIN: Madagascar

ref:Ha 205 

 

   4.23 cts. Hambergite emerald cut  single 

 13.2 x 8.7 mm.

 Characteristic needles.  Moderately included. Enhancement: none (N) Untreated

stone PRICE  

USD 846.00 

ORIGIN: Madagascar

ref:Ha 423 

 

   1.29 cts. Hambergite emerald cut   single 

9.8  x 6 mm.

 Eye clean. Enhancement: none (N) Untreated

stone PRICE  

USD  387.00

ORIGIN: Madagascar

ref:Ha 129 

 

    1.03 cts. Hambergite emerald cut  single 

 8.6 x 5.9 mm. Characteristic needles.  

 Slightly included. Enhancement: none (N) Untreated

stone PRICE  

USD  206.00

ORIGIN: Madagascar

ref:Ha 103 

 

   0.50 cts. Hambergite emerald cut  single 

5.5  x 5.5 mm. 

 Loupe clean. Enhancement: none (N) Untreated

stone PRICE  

 SOLD 

ORIGIN: Madagascar

ref:Hae050  

 

   0.71 cts. Hambergite oval  single 

 6.8 x 5.6 mm.  ( sugf cut )

 Loupe clean. Enhancement: none (N) Untreated

stone PRICE  

 SOLD 

ORIGIN: Madagascar

ref:Hao071  

 

   0.77 cts. Hambergite oval  single 

 6.9 x 5.6 mm. ( sugf cut )

 Loupe clean. Enhancement: none (N) Untreated

stone PRICE  

 SOLD 

ORIGIN: Madagascar

ref:Hao077  

 

   1.16 cts. Hambergite emerald cut  single 

9.9  x 5.3 mm. 

  Moderately included. Enhancement: none (N) Untreated

stone PRICE  

USD 120.00 

ORIGIN: Madagascar

ref:Hae116  

 

   1.40 cts. Hambergite emerald cut  single 

x 6.4 mm.  

Very slightly included. Enhancement: none (N) Untreated

stone PRICE  

USD 399.00 

ORIGIN: Madagascar

ref:Hae140  

 

   1.67 cts. Hambergite emerald cut  single 

10.1  x 7 mm. 

  Loupe clean. Enhancement: none (N) Untreated

stone PRICE  

USD 499.00 

ORIGIN: Madagascar

ref:Hae167  

 

   1.76 cts. Hambergite lozenge cut  single 

 13 x 6.7 mm. 

 Loupe clean. Enhancement: none (N) Untreated

stone PRICE  

USD 519.00 

ORIGIN: Madagascar

ref:Hal176  

 

   2.28 cts. Hambergite asymmetrical cut  single 

12.4  x 6.8 mm. 

 1 needle visible on the picture. Enhancement: none (N) Untreated

stone PRICE  

USD 456.00 

ORIGIN: Madagascar

ref:Haa228  

 

  

Enlarge

21.25 cts. Hambergite trap asymmetric cut  single 

 29.6 x 14.6 mm. 

2 inclusions in the pavilion, visible from  the top.

Characteristic needles.

  Enhancement: none (N) Untreated

stone PRICE  

 SOLD 

ORIGIN: Madagascar

ref:Ha 2125 

 

    Enlarge  16.84 cts. Hambergite crystal  single 

 39.5 x 9.3 x 5.6 mm. nice shape (whole) Transparent, gem quality.

Enhancement: none (N) Untreated

stone PRICE  

USD  1180.00 

ORIGIN: Madagascar

ref:HAr1684 

 

      Enlarge  30.17 cts. Hambergite crystal  single 

 31 x 15 mm. nice shape (whole)

Enhancement: none (N) Untreated

stone PRICE  

USD  2100.00

ORIGIN: Madagascar

ref:HAr3017 

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General Information

 Chemical Formula: Be2BO3(OH)
 Composition: Molecular Weight = 93.84 gm
   Berylium 19.21 %  Be   53.31 % BeO
   Boron 11.52 %  B    37.09 % B2O3
   Hydrogen   1.07 %  H     9.60 % H2O
   Oxygen    68.20 %  O
            ______        ______
            100.00 %      100.00 % = TOTAL OxIDE
 Empirical Formula: Be2(BO3)(OH)
 Locality: HEL,  MADAGASCAR
 

Hambergite Images

 

Click on the picture to go to Hambergite  crystal.
    Image by A. Darbellay

Crystallography

 Axial Ratios: a:b:c =0.798:1:0.3622
 Cell Dimensions: a = 9.76, b = 12.23, c = 4.43, Z = 8; V = 528.79 Den(Calc)= 2.36
 Crystal System: Orthorombic-Dipyramidal  H-M Symbol (2/m 2/m 2/m) Space Group: Pbca
 x Ray Diffraction: By Intensity(I/Io): 3.82(1)3.13(0.9)4.53(0.8)
 

Physical Properties

 Cleavage: [010] Perfect, [100] Good
 Color: colorless, gray white, yellowish white, or white.
 Density: 2.372
 Diaphaniety: Transparent to Translucent
 Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
 Hardness: 7.5 - Garnet
 Luminescence: -----
 Luster: Vitreous - Dull
 Streak: white
 

Optical Properties

 Optical Data: Biaxial (+), a=1.55, b=1.59, g=1.63, bire=0.0800
 Pleochroism (x): colorless.
 Pleochroism (y): colorless.
 Pleochroism (z): colorless.
 

Classification

 Dana Class: Anhydrous Borates Containing Hydroxyl or Halogen
  Dana Type
  Dana Group
 Strunz Class:  Nitrates, Carbonates and Borates
   Shelly borates with [BO2]1- to [B6O10]2-
   STRUNZ V/L.02-10 - Nitrates, Carbonates and Borates [Shelly borates with [BO2]1- to [B6O10]2- {Hambergite - Rhodizite series}]
 
 Hambergite Be2BO3(OH) Pbca 2/m 2/m 2/m
 
 Rhodizite (K,Cs)Al4Be4(B,Be)12O28 P43m- -4 3m
 
 
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