Posts Tagged ‘Scientists’

All you need to know about Cubic Zirconia

Monday, January 11th, 2010

When zirconium oxide is found in the form of cubic crystalline it is known as cubic zirconia. It is generally colourless, hard and in the optically flawless form. It can come in the variety of colours. However, people get confused in zircon and zirconium. Zircon is made of zirconium silicate. Since formulated in 1976 Cubic Zirconia gives a strong competition to diamonds. It is a synthetic element which is very important in economically terms. Synthetic moissanite is the latest cultivated material giving a solid competition to this metal.

This synthetic metal has a very high melting point of 2750C.Earlier there is no crucible available that can hold this metal in the molten state.  However, later the stabilization of this metal was realised and a new product that is stabilized zirconia was made in 1930. This synthetic material was used in the form of polycrystalline ceramic.  Even there is a natural counterpart of this metal, which is found in metamict zircon. Later people realised that cubic zirconia can also be used in different sort of jewelleries. 

As the metal is generally known as diamond’s lookalike, it is used at places in the place of diamond. It is used in jewellery in the place of diamond and since is cheaper in rate hence it is used at a large level. You can identify the difference between an actual diamond ring and cubic zirconia rings by observing the shine that is reflected by the two.  Cubic zirconia always has less brilliance than diamond. Hence when you would go through artificial cz jewellery, you can simply come to know about it. However, later scientists have also come up with the new uses of this metal in lasers and other sort of optical applications. 

You can find a variety of colours in cubic zirconia. You just have to name and various colours of these stones are ready to adorn you.  From yellow, orange, red, green with purple, pink, golden brown, all colours are available in this synthetic metal. To achieve these colours, various metal oxides are added to this metal. These metal oxides can be cerium, chromium, erbium, neodymium and titanium. Apart from these colours, this metal also undergoes various processes to add lustre and hardness like diamond before embedding it in a jewellery piece.  After going through all the process this metal is cut down into gemstones and is ready to serve the jeweller market. 

Posted by diana, I’m writing a jewelry guide blog, there are many articles and pitures about Rings and earrings, especially cubic zirconia rings, clip earrings, CZ rings

Article Source:http://www.articlesbase.com/jewelry-articles/all-you-need-to-know-about-cubic-zirconia-1699075.html

History about Synthetic Diamonds

Wednesday, November 11th, 2009

Some of the real and original diamonds have a history that is not as well-known and clear, and they only add to the romance and mystique surrounding them. But this is not the case in synthetic diamonds. There is something so exciting about the synthetic diamonds. They have well-documented histories and we know where they came from, and who produced them and when.

The motivation to create man-made synthetic diamonds resulted from the desire of scientists and researchers to improve technology at a much lower cost than the expensive mined real diamonds. The synthetic diamonds are a cheaper and more readily available solution when compared to the real diamonds. They are a boon to both the world of gemstones and the world of technology.

Synthetic diamonds look like real diamonds but do not have all the same properties as real diamonds. It is extremely difficult to differentiate the characteristics such as chemical composition, hardness, weight, brilliance, luster and some of the light handling characteristics of real and synthetic diamonds with the naked eye. Synthetic diamonds have some properties such as durability similar to the real or mined diamonds.

In the past cut glass was probably the first material used to simulate a diamond. It is readily available, easy to cut and polish. The synthetic diamond made of cut glass looks good when seen from a distance, and is extremely low cost.

The use of cut glass has widely been replaced by the most popular diamond alternative, cubic zirconium. Cubic zirconium has been the most widely used material for synthetic diamonds since 1976. Its low cost, durability and light handling characteristics have made it extremely attractive in producing low cost jewelry. The light handling characteristics of synthetic diamond made of cubic zirconium is so close to that of a real diamond. The annual global production of cubic zirconium diamond reached 50 million carats by 1980. Cubic zirconium diamonds weigh about 1.7 times more that of real diamonds, and have the hardness rating of 8.5 to 9 which is bit less than the real diamond.

Henri Moissan is the first one to create a man-made diamond using moissanite or silicon carbide in a laboratory in 1892. Moissanite is a naturally occurring mineral that is a little softer than real diamonds but has almost all of the other properties of a mined real diamond. Charles and Colvard introduced gem-quality moissanite jewelry in 1998. Moissanite has almost the same thermal conductivity as a diamond. You need a highly specialized equipment to differentiate a moissanite diamond and a real diamond. JamesAllen.com states that synthetic moissanite diamonds made from silicon carbide gained widespread use beginning in 1999. These fakes are so good that standard thermal conduction testers used by jewelers cannot detect them. They also sell for nearly as much as the real thing. There is a key to identify a moissanite synthetic diamond – You can see double facets or a doubled table reflection, when you look this synthetic diamond through a 10x loupe. The synthetic moissanite diamonds have a greater density, weighing more than a comparable diamond.

The only way you can be sure to differentiate between a genuine diamond and a high quality synthetic diamond on the market is based on the citification and some simple and more conclusive tests.

Nisha is a Copywriter of precious stone. She written many articles in various topics.For more information visit:koh-i-noor diamond. contact she at <a rel="nofollow" target="_blank" href="mailto: malar.article@gmail.com“>malar.article@gmail.com

Article Source:http://www.articlesbase.com/jewelry-articles/history-about-synthetic-diamonds-1446545.html

Jewelry for healing body and mind

Saturday, November 7th, 2009

From the beginning of mankind, the first cavemen that ever walked the earth chose something to believe in and something to worship. Even though at that time something like a burning branch would have been considered out of this world, they considered it important enough to believe in its great powers. But times have changed since then and so have our beliefs.

Because of the progress we have made in scientific areas, we have now started to grow out of our beliefs in the power of the unseen. This is one of the main reasons why when you ask someone if they believe that jewelry or any other such small object possesses the power to change the life of the person who wears it, they instantly reject the idea and find it preposterous.

But this is where it gets interesting. The same people that you may talk to about this subject may do the same thing every day without even knowing it. Why do Christians wear crosses around their necks? Why so Jewish people wear the Star of David? These things happen because the wearers consider that those symbols protect them from evil and get them out of harm’s way.

If this is true, then why wouldn’t we use jewelry for healing body and mind? For instance, wedding rings take the shape of a perfect circle, something that cannot be broken in order to remind us of our commitment to our partners in life.

The circle symbolizes the beginning of everything, because that is where it all started. It is the base symbol of the sacred geometry symbols and it is the most powerful of them all. And all of us that wear wedding rings consider it to be a reminder of something sacred that we have started.

There are many things that surround us and scientists have reached the conclusion that it is all basically energy. All that energy lives together in the same universe and it influences each step we take. This is the first method that we can use jewelry for healing body and mind.

Our lives are influenced by everything that surrounds us. For example, if you eat properly for a week you start feeling better. If you have loving friends and family next to you that support each decision you make, you feel more confident.

But this works both ways. Eating all the wrong junk food you can find will cause you to feel awkward and unpleasant, which can ruin your day. When you have a fight at home, you may take it out on your work colleagues. This is why you should use cosmic jewelry for healing body and mind.

With just a few simple pieces of jewelry we can change the state we are in for the better. When you are purchasing your own pieces of jewelry for healing body and mind, you need to choose your source carefully, because the intention of the craftsman should also be aimed towards that goal.

If you want more information on how you can use or which pieces of jewelry that are meant for this purpose, you should visit the website ka-gold-jewelry.com. This is where you can also find handcrafted jewelry for healing body and mind that are created for this purpose and with this aim in mind.

Nothing works better then belief in the things that you hold close to you. This is also true for jewelry. If you believe in their powers and everything they can do for you, then you should have no problem in using the jewelry for healing body and mind from the website mentioned afore.

Article Source:http://www.articlesbase.com/jewelry-articles/jewelry-for-healing-body-and-mind-1432755.html