November birthstone

⌛Time it takes to read this article: < 1 minutesLast updated: November 28, 2021 at 10:28 PM November's birthstones are topaz and citrine. The most common color of topaz is champagne. Blue topaz also exists in natural colors, but the amount in circulation is very small. Most blue topaz is treated with gamma ray irradiation or heat treatment to create stones with colors such as "Swiss Blue" or "London Blue." Natural stones exist in citrine (citrine), but there are also stones made by heat-treating amethyst (amethyst) to turn it yellow. The pendant in the photo is probably the treated stone.