Search results
Results from the WOW.Com Content Network
Gemstone irradiation is a process in which a gemstone is exposed to artificial radiation in order to enhance its optical properties.High levels of ionizing radiation can change the atomic structure of the gemstone's crystal lattice, which in turn alters the optical properties within it. [1]
Cyclotroned diamonds have a green to blue-green color confined to the surface layer: they are later annealed to 800 °C to produce a yellow or orange color. They remain radioactive for only a few hours after treatment, and due to the directional nature of the treatment and the cut of the stones, the color is imparted in discrete zones.
Scams and confidence tricks are difficult to classify, because they change often and often contain elements of more than one type. Throughout this list, the perpetrator of the confidence trick is called the "con artist" or simply "artist", and the intended victim is the "mark".
The De Beers diamonds antitrust class action sought to end an alleged 60-year conspiracy to fix the price of rough diamonds in the U.S. by the De Beers group of companies. The litigation includes several cases including Hopkins v. De Beers Centenary A.G., et al., No. CGC-04-432954, which commenced on July 24, 2004, and Sullivan v.
‘Reflection in a Dead Diamond’ Review: While James Bond Awaits a Reboot, French Pair Pay Eye-Popping Homage to His ’60s-Era Imitators. Peter Debruge. February 16, 2025 at 4:30 PM.
In a filing late Wednesday evening, lawyers with the Justice Department agreed to a proposed order that would largely prohibit the Treasury Department from sharing sensitive financial data with ...
Diamond is extremely strong owing to its crystal structure, known as diamond cubic, in which each carbon atom has four neighbors covalently bonded to it. Bulk cubic boron nitride (c-BN) is nearly as hard as diamond. Diamond reacts with some materials, such as steel, and c-BN wears less when cutting or abrading such material. [4]
ResellerRatings is an online ratings site where consumers submit ratings and reviews of online retailers, and online retailers participate to respond to reviewers and to gather reviews from their customers post-purchase. As of July 11, 2017, the site had over 6.2 million user-submitted reviews for 202,000 stores. [citation needed]