January birthstone
Many people may have the impression that garnet is a red gemstone, but it actually comes in many shades. In fact, garnet is not the name of a single gemstone, but the name of a group of minerals with similar chemical compositions. Also, there are some types that are made by mixing several types, so I think it would be fun to collect gemstones with different colors and types. Some types appear to change color depending on the light source.
Karatz GemMagazine “ List of January birthstones and birthstones ”
Color change garnet from Madagascar 0.855ct loose
Sale price¥12,800
Color change garnet from Madagascar 0.648ct loose
Sale price¥9,800
American Anthill Garnet (Chrome Pyrope Garnet) 5mm/0.540ct Loose
Sale price¥22,800
Russian demantoid garnet (horsetail recognized) 0.291ct loose
Sale price¥49,800
YAG (yttrium aluminum garnet) 1.792ct loose
Sale price¥12,800
YAG (Yttrium Aluminum Garnet) 6.5mm/1.774ct loose stone
Sale price¥12,800
YAG (Yttrium Aluminum Garnet) 6.5mm/1.548ct loose stone
Sale price¥12,800
Leuko garnet from Myanmar 0.294ct loose
Sale price¥19,800
Russian demantoid garnet (horsetail recognized) 0.214ct loose
Sale price¥59,800
Russian demantoid garnet (horsetail recognized) 4.2mm/0.336ct loose
Sale price¥98,000
Pyrope spessartine garnet (color change garnet) 1.707ct loose
Sale price¥45,800
Pyrope spessartine garnet (color change garnet) 1.297ct loose
Sale price¥39,800
Pyrope spessartine garnet (color change garnet) 1.234ct loose
Sale price¥35,800
Pyrope spessartine garnet (color change garnet) 1.171ct loose
Sale price¥35,800
1 stone of Russian demantoid garnet (round cut, 2.0mm)
Sale price¥3,980
Russian demantoid garnet (horsetail recognized) 5.8mm/0.876ct loose
Sale price¥258,000
【9/15 22時販売】タンザニア産ドラゴンガーネット 0.977ctルース
Sale price¥27,800
![[Limited to 8 stones] Jam Gacha💎 1 Rainbow Garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/2025-05-158.54.00.png?v=1747266901&width=1279)
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.
So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.
KARATZ's Initiatives and Social Contributions
We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.
KARATZ Books
These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.
jeweler's tools
For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.