A deep dive into two legendary 1990s CD players—the Copland CDA 288 and YBA CD1 Blue Laser. Vintage, overbuilt, and sonically ...

Purity is most important. Jewelry stamped 24-karat is 99.9% pure gold and carries the most value by weight. Lesser karats are mixed with other alloys. Gold that’s 14-karat is 58.3% pure ...

Only members have access to the bars. On its website, Costco lists a one-ounce, 24-karat Gold Argor Heraeus Kinebar bar for $3,000. The bar is 999.9% pure gold. Various news outlets have reported that ...