The Getty shop justifies a colorful goblet’s $45 price tag by noting that it hails from the Venetian island of Murano, “famous for its highly prized, collectible glass.” Walmart writes that a $57.95 ...

I vividly remember the first time I saw uranium glass. In daylight, the antique bowl looked ordinary—pale green, transparent glass with a decorative rim—but under a UV light, it transformed, glowing ...