Detailed sheet

beryllonite

So called because of the presence of beryllium, it was named by James Dana in 1888.



CHEMICAL CHARACTERISTICS

NaBe[PO4]

sodium beryllium phosphate



PHYSICAL CHARACTERISTICS

Main color

colourless

Other colors

yellow

pale yellowish

Color of streak

white

Luster

adamantine, vitreous

Hardness

5.5 to 6.0

Density

2.80 to 2.88

Cleavage

perfect

Fracture

conchoidal

perfect cleavage and pearly in one direction



OPTICAL PROPERTIES

Transparency

transparent

Refractive index

1.522 - 1.560

Double refraction

0.010

weak biaxial (-)

visible double refraction

No

Dispersion

0.010(0.007)

Pleochroism

absent

Number of colors

1

Fluorescence

none



CRYSTALS PROPERTIES

tabular to short prismatic

crystals system

monoclinic



OTHER INFORMATIONS

Exploited
sites

It is found in Brazil, Zimbabwe, Finland, United States, Pakistan.

use in jewelry

Colored yellow varieties are cut in facets, it is mainly a collection stone

Daily care
and precautions

fragile

Other
Gems

Venez visitez

notre site web

voillot-joaillier.fr

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo consectetur adipiscing elit. Ut elit tellus, luctus nec.

Shopping Cart