SHOW: Broach 20
Title: Broach
General: This broach is made from Sterling silver, with
Horse-tail hair from the recipients horse. The "DOT" under the
tail is made from 18K Gold and is set with a Diamond.
Material: Sterling Silver, 18K Gold.
Gem: Diamond.
Method: Constructed from a single piece of sheet metal.
Finish: Polished
Mechanics: The catch is of a standard barrel type.
Designer: Walraven van Heeckeren.
Craftsman: Walraven van Heeckeren.
To Order, You either must have some of your Horses tail,
or I can supply some black tail hair.
Price: AUS $ 350.00 without a diamond.
Price with a diamond on application.
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.
18K GOLD is a ternary Gold alloy consisting of:
750 parts/1000 Pure Gold.
125 parts/1000 Pure Silver.
125 parts/1000 Pure Copper.
Annealing temperature: 750 degrees Celsius.
Melting Temperature: 950 degrees Celsius.
Wal.
name: DIAMOND
colour: Colourless, yellow, brown, sometimes green, blue, reddish, black
colour of streak: None possible
mohs hardness: 10
specific gravity: 3.47 - 3.55
cleavage: Perfect
fracture: Conchoidal to splintery.
crystal system: Isometric ( cubic ); mainly octahedrons, also
rhombic dodecahedrons, cubes, twins, plates.
chemical composition: C, crystallised carbon.
transparency: Transparent.
refractive index: 2.417 - 2.419
double refraction: None, often anomalous.
dispersion: 0.044
pleochroism: None.
absorption spectrum: Colourless to yellow: 4780, 4650, 4510, 4350, 4015,
4230, 4155, 3900 Blue-green: ( 5370 ), 5040, ( 4980 )
fluorescence: Variable; Colourless and yellow: mostly blue. Brown
and green: often green.