Reactor-grade zirconium is essentially free of hafnium. Zircaloy is an important alloy developed specifically for nuclear applications. Zirconium is exceptionally resistant to corrosion by many common acids and alkalis, by sea water, and by other agents. Alloyed with zinc, zirconium becomes magnetic at temperatures below 350K.
It is used extensively Read more
Gemstone which ranges in colour through yellow, red and orange to green.
Colourless, golden-brown and sky-blue versions are produced by heat treatment.
Most of the mineral suitable for gemstones comes from the Far East and Sri Lanka. Yellow and brown shades of zircon were often termed hyacinth, and transparent or colourless Read more
More common gemstone or crystals used and are helpful around computers are Lapiz lazuli, Moonstone, Sodalite, Pink and Black Tourmaline, Kunzite, Emerald, Rose Quarts Aquamarine and Himalayan Salt Crystals.
EFFECT ON ELECTRICAL DEVICES AND THE ENVIRONMENT:
It is a realization that most individuals spend a lot of time indoors.
With the onset Read more
Was founded in New York in the early 1930’s by Edgar Rodelheimer and Theodore Steinman. The jewellery produced by the Company was bold with original and innovative designs. In addition to jewellery they also produced buckles, chain belts and opera glasses. They also produced ranges of jewellery for fashion Read more
A harvest of Anglo-Saxon gold and silver so beautiful it brought tears to the eyes of one expert, has poured out of a Staffordshire field. The largest hoard of gold from the period ever found.
The weapons and helmet decorations, coins and Christian crosses amount to more than 1500 pieces, Read more
The following are diamond shapes: marquise, oval, heart, pear, asscher, emerald, princess, cushion, trillion, radiant, baguette, old miner, european and fancy.
There are many different considerations for you to take into account when you look into diamonds, and one of the most important of these considerations is the diamond’s shape. Many people Read more
The european cut, or old european cut has hand faceting features and an open culet.
Where the Old Miner Cut was an antecedent of the modern round brilliant, the Old European Cut was the direct forefather to the modern round brilliant. It was the Old European Cut that was studied Read more
Basics of diamond certification covering the diamond grade report, certification process, 4 cs and flaws.
Diamond certification is also known as a diamond grade report. This is a fairly straightforward process by which a diamond is measured and tested. The results of this scientific study of a particular diamond are Read more
Various characteristics of diamonds are graded and categorized by the diamond industry. Learning about diamonds is first learning about the “four Cs” of diamonds which are considered the most important grades and categories:
* Carat weight
These are the criteria jewelers use when grading diamonds, and they’re the Read more
Important parts of the diamond anatomy include facets, table, diameteer, crown, culet, pavilion, girdle and depth.
It is useful to understand the anatomy of diamonds. Like a human body, each part of the diamond has a specific name, and knowing these, and having a working understanding of what each part Read more