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1月誕生石

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

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Sold out Pt950 デマントイドガーネット 0.50ctct ペンダントトップ(ネックレストップ) 鑑別書
Sold out ケニア産ツァボライト 0.505ctルース
Sold out ケニア産ツァボライト 0.386ctルース
Sold out ケニア産ツァボライト 0.357ctルース
Sold out ロシア産デマントイドガーネットキャッツアイ(ホーステール認む) 0.200ctルース
Sold out GGG(ガドリウムガリウムガーネット) 0.658ctルース
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 1.374ctルース
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 2.678ctルース
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 0.656ctルース
Sold out スリランカ産ヘソナイトガーネット 1.968ctルース
Sold out Garnet Gacha (Round Cut, 2.5mm) Cut by American Master Polisher KEN 《Bulk Purchase Discount Available》
Sold out 【22602563掲載】K18 アルマンディンガーネット リング
Sold out Bekily Blue Garnet (Color Change Garnet) from Madagascar 0.230ct Loose Gemstone
Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.221ct Loose Stone
Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.206ct Loose Stone
Sold out Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.254ct Loose Stone
Sold out アルマンディンガーネット 1.255ctルース
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 0.922ctルース
Sold out 《Limited to 10 stones》Mozambique Grape Garnet loose stone (6×4mm, pear cut) 《Bulk purchase discount available》
Sold out 《Limited to 21 Stones》Russian Demantoid Garnet Gacha with Beautiful Horsetail Inclusions, usually ¥69,800《Multiple Purchase Discount Available》
Sold out Tanzanian Rhodolite Garnet 0.410 ct Loose Stone
Sold out マダガスカル産ベキリーブルーガーネット(カラーチェンジガーネット) 0.089ctルース
Sold out ケニア産バイカラーグロッシュラーガーネット 0.479ctルース
Sold out ロシア産デマントイドガーネット(ホーステール認む) 0.265ctルース
Sold out Myanmar Leuco Garnet 0.324ct loose stone
Sold out YAG(イットリウムアルミニウムガーネット) 1.927ctルース
Sold out 《Limited to 20 stones》Demantoid Garnet Gacha, including Russian demantoid garnets, normally priced at 69,800 yen 《Multiple purchase discount available》
Sold out Tanzanian UV Type Mint Garnet 0.440ct Loose Stone
Sold out 0.628ct Mozambican Rhodolite Garnet Loose Stone
Sold out 0.562ct Almandine Garnet Loose Stone from Mozambique
Sold out Mozambique Almandine Garnet 0.961ct Loose
Sold out Mali Garnet (Grossular/Andradite Garnet) 0.675ct Loose Stone
Sold out 【12562003掲載】奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 1.207ctルース
Sold out K18YG Russian Demantoid Garnet (horsetail inclusion) 4mm/0.382ct, Bekily Blue Garnet Ring
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 0.960ctルース
Sold out Bekily Blue Garnet from Madagascar (color change garnet) 0.163ct loose
Sold out アルマンディンガーネット 3.214ctルース
Sold out 【12561952掲載】アメリカ産アントヒルガーネット 0.332ctルース
Sold out 【12561951掲載】アメリカ産アントヒルガーネット 0.370ctルース
Sold out タンザニア産ロードライトガーネット 0.704ctルース
Sold out Tanzanian Color Change Garnet 0.509ct Loose Stone
Sold out Kenyan Tsavorite 0.164ct Loose Stone
Sold out Limited to 14 stones: Rainbow Garnet from Tenkawa Village, Nara Prefecture (faceted by Saint-Jay) [Multiple purchase discounts available]
Sold out Color Change Gacha💎 Russian alexandrite, Brazilian alexandrite, and Tanzanian color-change garnets, usually priced at ¥39,800. 《Discounts for multiple purchases available》
Sold out Tanzanian Spessartine Garnet 1.168ct Loose Stone
Sold out Sri Lankan Hessonite Garnet 1.674ct Loose Stone
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 0.989ctルース
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 1.458ctルース

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.

KARATZ・Five Commitments

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.