Geology Home Page physical geology historical geology planetary gems
Roger Weller, geology instructor
The Beauty of Tungsten Rings
Tungsten was first found in Sweden in 1781, credited to be found by
Josť and Fausto Elhuyar because
they succeeded in isolating the element from tungstic acid.
The word tungsten
comes from the Swedish language Tung
sten directly translatable to heavy
stone. It is also known as Wolfram. It is a steel gray-white, heavy metal that
is remarkable for its robust physical properties. It has the highest melting
point than any other non-alloy. Also
Tungsten carbide, a compound of tungsten and carbon,
is one of the hardest known substances and is the most common material to make
milling and turning tools.
Also it is used as a scratch- resistant for jewelry. This brings us to Tungsten
measures between 8 and 9 on the Mohs hardness scale. It is the only exotic metal
that can be permanently polished and is the most wear resistant. Tungsten is
about 10 times harder than 18K Gold, 5 times harder than tool steel, and 4 times
harder than titanium. The rings will hold their shape and shine longer than any
other ring, and will not bend or scratch. There have been cases where the
Tungsten ring has broken with enough force or on a hard surface.
How Tungsten Rings are made:
Ground tungsten and carbon are poured into a metal die cube containing a ring mold. The mold is subjected to high pressure to push the powder together into a solid ring blank. The blank is then fired in an oxygen-powered furnace at temperatures exceeding 6,000 degrees Fahrenheit. Only at this obscenely high temperature will the blank's component elements intermingle and solidify as one. Once cooled, any burs or extra metal is removed with high-powered diamond edged saws. . Within the cutting process many different things can be done to design the perfect tungsten Ring. You can have inlay of gold and silver even tungsten ceramic rings. Faceted Tungsten Rings, the ever elegant and popular Celtic tungsten rings, Laser Etched, this is also the only time that an engraving can be done and the only time that the size of the ring can be determined. Due to the hardness of the tungsten carbide you have to know what size you wear when you order your ring, because once the ring is completed it cannot be resized. After the sizing, Diamond powdered files and sanders are then used to polish the ring until it shines.
basically a steel ring. It is very hard, but NOT scratch proof. Some of the retailers still call them Tungsten Carbide so be careful. Some of the low priced rings seen on discount websites do not include Carbide; a Tungsten Carbide ring can only be scratched by a diamond or a product containing the mineral corundum.
First time bought After 5 months