So whats special about Tungsten Carbide? What makes it more expensive?
What's so special about tungsten carbide is that the ring will not scratch, bend, or dent FOREVER and will stay as beautiful like the first day you buy for your whole life unlike the stainless steel jewelry which scratches easily after a few days you wear. Tungsten carbide's hardness is around 9 Mohs, scale of hardness, second to diamond which is 10 Mohs. The features of it are extreme hardness and polished, never abrade and fade. It's 10 times harder than 18K gold, 4 times as titanium and equal to natural sapphire, and it glitters nearly originally, charming and joyful. Tungsten carbide is the only rare and exotic metal that can be permanently polished. The polish and finish can last as long as your lifetime commitment with your partner! With gold, platinum and even titanium jewelry, you will notice varying degrees of scratching, denting and surface mars. However, with tungsten rings, the surface will maintain its original beautiful shiny finish. To describe the surface of the ring after fully polished, I would call it "a gray mirror", a bit more grayish than stainless steel, but reflects light more brilliantly. Many people also enjoy the solid weight of a tungsten ring. The enduring polish of a tungsten ring together with the solid weight, speak of commitment, security and an everlasting bond.
In other words, tungsten carbide material is the hardest of all steel ever produced. They're usually used for aerospace industrials, armor-piercing ammunition, and for industrial moulds. Recently, the jewelry industry is turning their attention towards this material because of their distinct characteristics to create modern style jewelry for new generation people.
Determining Your Ring Size
Use a piece of string or a strip of paper and wrap around your finger to measure the circumference of your finger in inches or millimeters, then use the table at http://en.wikipedia.org/wiki/Ring_size to determine your closest ring size in US scale.
If you know your ring size in other international ring size standards, you can also compare it to the closest US size. In addition, you can use a ruler to measure the inside diameter of the ring you already have to determine your size in US standard.
If your knuckles are large, you may want to find an average size between the circumference of your knuckle and the circumference at the base of your finger. Also keep in mind that ring sizes can be affected by the normal swelling and shrinking caused by hot or cold weather, physical exertion, illness and/or medication, and by weight gains or losses.
We understand that buying ring on the internet is not easy because you cannot try the size before you buy. So We're doing my best to provide you as many sizes as we can, including half sizes. Please know that your satisfaction is most important to us. If the ring you bought doesnt fit your finger, we're happy to exchange a new one for you--free of charge. For more information, see our Return Policy.
Tungsten is not the same as Tungsten Carbide!
Be careful about the rings advertized on the market as tungsten carbide rings, since many of them are just tungsten not tungsten carbide. Tungsten rings are very hard but not resistant to scratch! We guarantee that all of our rings are completely resistant to scratch, abrade, and wear. A Tungsten Carbide ring can only be scratched by a diamond or a product containing the mineral corundum. Our rings are made only of highest jewelry grade, non-magnetized, cobalt-free tungsten carbide.
Grades of Tungsten Carbide
Please note that the tungsten carbide for jewelry has two different grades. One can be magnetized by magnet that is the recycled material. The other cannot be magnetized by magnet that is the better material. If using the recycled material, the ring will change its color after a few years but if using the better grade, the ring will not change its color forever.
Why should I be concerned about Cobalt in Tungsten Carbide jewelry?
Industrial grade tungsten carbide contains Cobalt inside. The alloy containing Cobalt is easier to procure and rings containing Cobalt are being commonly sold. However, rings containing Cobalt will develop a negative react to your skin. After a short time period the ring will develop oxidation spots that cannot be removed or polished out. This is due to the Cobalt reacting to the human body. All of f-boutique's tungsten carbide jewelry is 100% Cobalt free.