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誕生石一覧

Birthstone list

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Sold out バイカラートルマリン 0.974ctルース
Sold out Colombian trapiche emerald (reverse trapiche) 3.0mm/0.107ct rough stone (faceted cut)
Sold out Bekily Blue Garnet from Madagascar (color change garnet) 0.163ct loose
Sold out ベトナム産非加熱シルキーピンクサファイア 0.175ct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 【12561946掲載】ブラジル産エメラルドインクォーツ 2.358ctルース
Sold out 【12561945掲載】ブラジル産エメラルドインクォーツ 3.367ctルース
Sold out 【12561896掲載】ロンドンブルートパーズ 0.476ct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 Diamond 2.9mm/0.094ct Loose (E, VVS2, VeryGood)
Sold out 【32501846掲載】ダイヤモンド 0.290ctルース(J, VS1)
Sold out 0.084ct loose green diamond (FANCY GRAY GREEN, I-1)
Sold out K18YG ベニトアイト 0.342ct リング
Sold out Pt950 ベニトアイト 0.17ct リング
Sold out Tanzanian Color Change Garnet 0.509ct Loose Stone
Sold out 【12561176掲載】メキシコ産オパール(ファセットカット) 0.644ctルース
Sold out 【12561168掲載】メキシコ産ウォーターオパール(ファセットカット) 0.349ctルース
Sold out 【12561129掲載】スリランカ産イエローサファイア 0.291ctルース
Sold out Brazilian London Blue Topaz 0.641ct Loose
Sold out 【12561913掲載】オーストラリア産ブラックオパール 0.221ctルース
Sold out 【12559896掲載】ブラジル産エレスチャルアメジスト 3.678ctルース
Sold out K18PG Thai Pigeon Blood Ruby 0.38ct Ring AIGS
Sold out Tanzanite from Tanzania 0.331ct loose stone
Sold out Tanzanite 0.505ct loose stone from Tanzania
Sold out Tanzanian Spessartine Garnet 1.168ct 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
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) 1.827ct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) 1.951ctルース
Sold out Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 4.8mm/0.612ct Loose
Sold out Pink sapphire (with hematite) 0.271ct loose stone
Sold out [Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone
Sold out Silky sapphire from Vietnam, 1.169ct loose stone
Sold out Colombian emerald 10.940ct rough stone
Sold out 0.745ct loose bicolor sapphire from Windsor, Tanzania
Sold out Australian boulder opal 15.004ct 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) 0.639ctルース
Sold out 【12552511掲載】ピンクダイヤモンド 0.296ctルース
Sold out Colombian emerald rough stone 18.900ct (with pyrite)
Sold out Sri Lankan moonstone 7.2mm/1.342ct loose gemstone
Sold out 0.072 ct loose Bekily blue garnet (color-change garnet) from Madagascar
coming soon 《Limited Edition - Pop-up Event Special》Gem Gacha 💎 Win gems such as red sapphire with a certificate, chameleon diamond, imperial topaz, alexandrite, and gems polished by Mr. Sanje. 《Multiple Purchase Discount Available》

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.