TK316 Stainless Steel:
TK316 Stainless Steel used in fashion jewelry, is an alloy with a minimum of 10% chromium content by mass. It does not stain, corrode or rust as easily as ordinary steel, and it is also hypoallergenic. Thus, it is extensively used in heavy gauge-welded components, such as jewelry. Tusk 316 stainless steel is of the highest quality for jewelry products.
Rutile is a mineral composed primarily of titanium dioxide. Rutile has among the highest refractive indices at visible wavelengths of any known crystal, and also exhibits a particularly large birefringence and high dispersion. Small rutile needles present in gems are responsible for an optical phenomenon known as asterism. Asteriated gems are known as "star" gems. Star sapphires, star rubies, and other "star" gems are highly sought after and are generally more valuable than their normal counterparts.