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 ”
![[Shinjuku Marui Annex 202511] Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.297ct Loose](http://store.karatz.jp/cdn/shop/files/collage_cf6adc6e-d27b-4c2d-b559-ad8c1ff44ea8.jpg?v=1701123604&width=4000)
Demantoid garnet 15.468ct rough stone from Madagascar
Sale price¥12,800
Demantoid garnet 20.693ct rough stone from Madagascar
Sale price¥12,800
Demantoid garnet 38.035ct rough stone from Madagascar
Sale price¥12,800
![[Shinjuku Marui Annex 202511] Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.163ct Loose Stone](http://store.karatz.jp/cdn/shop/files/collage_59fb4cae-4b91-4929-ae01-672d2ca35a52.jpg?v=1698934021&width=4000)
Russian demantoid garnet (horsetail recognized) 3.7mm/0.231ct loose
Sale price¥22,800
Russian demantoid garnet (horsetail recognized) 3.8mm/0.232ct loose
Sale price¥18,800
[Rouge cut] Almandine garnet 4.632ct loose
Sale price¥15,800
[Rouge cut] Almandine garnet 3.214ct loose
Sale price¥15,800
[Rouge cut] Almandine garnet 2.661ct loose
Sale price¥12,800
Almandine garnet 2.964ct loose
Sale price¥15,800
Bekily Blue Garnet from Madagascar (color change garnet) 0.346ct loose
Sale price¥25,800
![[12/14 22:00 Sale] Rainbow Garnet (Andradite Garnet) 6.7mm/1.488ct Loose Stone from Tenkawa Village, Nara Prefecture](http://store.karatz.jp/cdn/shop/files/PC042544_6ede3236-d3e4-44d5-a190-93898fe1bd84.jpg?v=1765631000&width=4000)
![[On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture](http://store.karatz.jp/cdn/shop/files/PC042513.jpg?v=1765589719&width=4000)
[Posted in 12545297] Multi-star garnet from Sri Lanka 4.209ct loose
Sale price¥98,000
![[On sale November 8th at 10pm] Limited to 9 stones: Carving Gacha (Opal, Tourmaline, Tsavorite Garnet) 1 loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_3c1f4b82-5dc0-4183-a4c0-c9d7900fd6ab.png?v=1762565061&width=2250)
![[12560338] Tanzanian Almandine Garnet 3.339ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PB070759.jpg?v=1767104206&width=4000)
![[On sale 10/31 at 10 PM] Garnet Gacha Loose Stone Set with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)](http://store.karatz.jp/cdn/shop/files/2ce9f9727de9532a55237668af9f2b6d_e4813415-0cbb-4832-91b8-0cb2c6b767c8.png?v=1761375345&width=2000)
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.