Skip to content

February birthstone

February's birthstone is amethyst and chrysoberyl cat's eye .

Amethyst refers to purple quartz. There is also a gemstone called ametrine, which is a combination of amethyst and yellow citrine. They are often made with special cuts such as those in the shape of plants or flowers, so they are fun to collect due to their different cuts, and can also be enjoyed as everyday jewelry.

Chrysoberyl cat's eye is one of the varieties of chrysoberyl. When a cabochon cut (dome-shaped cut) is applied and light is shined from above, a streak of light appears in the middle, creating a cat's eye effect (chatoyancy). There are many other gemstones with a cat's eye effect, but this is the most typical and is sometimes simply referred to as "cat's eye."


Karatz GemMagazine
" List of February birthstones and birthstones "

Sort by

Amethyst 9.860ct loose stone Sale price¥18,800

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.