|
Home
>
About Platinum Sterling Silver
|
|
VINZJEWEL are proud to bring you a contemporary range of product ~ Platim®, an existing new precious metal which offers a new alternative to white gold and platinum. It is comprised of platinum and sterling silver.
It has the very bright white look white gold at just a small fraction of the prices. Platim® is tarnish resistant and distinguished by a rich, white luster. The jewellery in this line is long lasting in both the nature of its material and in the quality of its design.
The combination of Platinum and sterling silver, and a patented alloy, possesses the rich white luster and reflectivity of sterling silver coupled with the durability and permanence of Platinum. Every hand-crafted piece of Platim® is tarnish-resistant, requiring no special cleaning agents to keep your jewellery shiny for years to come.
|
| Benefits of Platinum Sterling Silver |
|
The very unusual and very unique platinum sterling silver for jewellery manufacturing is set to take the silver jewellery manufacturing world by storm.
Three compositions of the metal have been developed – 925/1%Pt, 925/3.5%pt, 925/5%Pt. Prices of the metal will be reflected in the percentage of the platinum content. The metal’s tarnish resistance and hardness likewise are determined by the amount of platinum used.
|
Benefits of platinum sterling VS traditional sterling:
- Boosts the price points for designer lines; enables the use of finer stoners – even diamonds.
- Rich and deep white sheen and terrific surface finish.
- Outstanding tarnish-resistance – no plating. Greater resistance as platinum content increases.
- Significantly increased hardness with all formulas.
- Same casting parameters and equipment as gold and silver.
- Greater weight density a\creating a heft and heavy feel for the customer.
- Excellent casting performance with no firescale – pickling in Sparex recommended.
|
|
Tarnish Resistance
|
| Vapour tests using ammonium sulphide were performed on the Platinum Sterlings. The “Tarnish Rate” is plotted on a scale of 1 to 5, with 1 being the best and 5 being the worst. |
| 925/5%Pt |
2.5 |
8-10 times that of sterling |
| 925/3.5% Pt |
3.0 |
6-8 times that of sterling |
| 925/1%Pt |
3.5 |
3-4 times that of sterling |
| Regular sterling |
5.0 |
|
|
|
Hardness
|
| Hardness tests were performed on Rockwell R-15T (15 gram weight) and Vickers test were performed at a metallurgical lab. (200 gram weight). |
| 925/5%Pt |
Rockwell 63 |
Vickers 76 |
| 925/3.5% Pt |
Rockwell 72-74 |
Vickers 90 |
| 925/1%Pt |
Rockwell 69-70 |
Vickers 79 |
| Regular sterling |
Rockwell 58-59 |
Vickers 75 |
|