Process of Casting silver Jewellery
A two-step process, investment casting, produces small, complex shapes. Most castings, especially large ones, are made in sand molds. Permanent metal molds are used to make many small, simple parts; shell molding gives greater accuracy for a large volume of semi precision parts.
Molten silver is poured into the cavity and allowed to solidify. Sand, mixed with a binder to hold it together, is pressed around a wooden pattern that leaves a cavity in the sand. Wax or plastic replicas of the parts are molded in accurate metal molds. Top of the line casting equipments are utilized to produce the silver jewellery. When the whole mold is heated, the replica melts, leaving behind a cavity into which silver is poured.
The color is the greatest difference in the metals
The color is the greatest difference in the metals. The elements which include over one hundred known minerals are a diverse class when taken as a whole. The non metals are extremely diverse. Due to the diversity of the non metals subclass there is most of this diversity.
The non-metals include some elements known as semi-metals who share some properties with metals but differ in other characteristics. The hardest mineral known to man is from this subclass, as well as one of the softest. The Metals Subclass and related metal alloys contains metals whose properties are rather similar due to the common way in which they crystallize and bond.
Diamonds are forever
You may be familiar with the term, 'Diamonds are Forever'. It is made popular by the De Beers advertising campaigns and for good reason. They have been used throughout the ages as bearers of mystic powers and incredible beauty. Not only are these diamonds rare in numbers but also in the number of skilled artisans that can complement their exquisite beauty.
Part of the credit for the almost mythical reverence to diamonds throughout the years belongs to the fact that these beauties are quite rare in their most sought after gemstone quality form. Through the centuries they have been revered and admired by many civilizations. When it comes to history, diamonds have a very long and fascinating record as one of the most intriguing gemstones on the planet. Forged billions of years ago, long before dinosaurs roamed the planet, they have survived the forces of nature to reach us.