Encyclopaedia Britannica could soon go public at a valuation over $1 billion after pivoting into an AI education company. Rod Lawton/PhotoPlus Magazine/Future via Getty Once an icon of the 20th ...
The gem’s color is generally stable to light, but prolonged exposure to heat or sunlight might cause fading in yellow-to-brown, reddish brown, or dark brown topaz. Topaz is affected only very slightly ...