SHOW: Necklaces82
Title: Necklace. General: This pendant is set with a Mabe Pearl. Material: Sterling Silver. Gem: Mabe Pearl Method: Hollow, Constructed. Finish: Mechanics: The pearl is set from behind. Designer: W.van Heeckeren. Craftsman: W.van Heeckeren. Price: AUS $ 900.00.
STERLING SILVER is a binary Silver alloy consisting of:
925 parts/1000 Pure Silver and
75 parts/1000 Pure Copper.
Annealing temperature: 750 degrees Celsius.
Melting Temperature: 950 degrees Celsius.
Wal.
name: Mabe PEARL is also known as a blister pearl.
it forms as part of the shell and looks like a blister
on the inside of the shell.
colour: Pink, silver, cream, golden, green, blue, black
colour of streak: White
mohs hardness: 3-4
specific gravity: 2.60-2.78
cleavage: None
fracture: Concoidal or scaly
crystal system: Microcrystalline
chemical composition: 84-92% calcium-carbonate, 4-13% organic substances,
transparency: Translucent to opaque
refractive index: 1.52-1.66 Black: 1.53-1.69
double refraction: Weak or none
dispersion: None
pleochroism: None
absorption spectrum: Not usable
fluorescence: Weak; not usable. Natural black: red-reddish