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2.0 ct - 5.0 ct

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Sold out 【12561971掲載】ブラジル産デュモルチェライトインクォーツ 3.253ct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 【12561943掲載】ブラジル産ティンカーベルクォーツ(ピンクファイヤークォーツ) 2.360ctルース
Sold out Synthetic Blue Sapphire 2.012ct Loose (Synthetic Sapphire)
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 【12559339掲載】ブラジル産インペリアルトパーズ 4.321ctルース
Sold out [Sakura InCut] Synthetic Sapphire 2.610ct Loose Stone (Synthetic Pink Sapphire)
Sold out [Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone
Sold out [Yukinko Cut] Siberian Blue Quartz (Synthetic Quartz) 2.420ct Loose Stone
Sold out 【Yukinko Cut】 Siberian Blue Quartz (Synthetic Quartz) 2.503ct Loose
Sold out Sri Lankan Cobalt Spinel (Blue Spinel) 3.202ct Loose Stone (Needle-like Inclusions) Japan-German Rare Stone
Sold out Synthetic Alexandrite 2.046ct Loose
Sold out スリランカ産エンスタタイト 2.095ctルース
Sold out 【さくらインカット】ラベンダークォーツ(スコロライト) 2.161ctルース
Sold out Bicolor tourmaline 3.242ct rough stone from Afghanistan
Sold out Golden Hill Turquoise from Kazakhstan, 2.524ct Loose Stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.882ct loose stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.235ct loose stone
Sold out USA Oregon Sunstone 2.160ct Loose
Sold out ブラジル産インペリアルトパーズ 2.093ctルース
Sold out インド産カバンサイト 2.163ctルース
Sold out デュモルチェライトインクォーツ 3.814ct原石
Sold out Colombian oil-free emerald 0.17ct loose GIA
Sold out Unheated Blue Sapphire from Madagascar, 1.380ct Loose, AIGS
Sold out Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.867ct Loose Stone
Sold out Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.894ct Loose Stone
Sold out Australian black opal 3.148ct loose
Sold out スリランカ産スターサファイア 3.928ctルース
Sold out Brazilian kyanite in quartz 4.770ct loose
Sold out デュモルチェライトインクォーツ 3.901ctルース
Sold out アクアマリンキャッツアイ 3.528ctルース
Sold out メキシコ産ファイアーアゲート 3.800ctルース
Sold out Brazilian dumortierite in quartz 4.592ct loose
Sold out [On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 2.365ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out 【12546396掲載】スリランカ産ゲーサイトイントパーズ 3.200ctルース
Sold out Colombian Trapiche Emerald 2.318ct Loose
Sold out オーストラリア産ホワイトオパール 4.170ctルース
Sold out Rainbow Garnet (Andradite Garnet) 7.0mm/2.135ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out Australian boulder opal 2.326ct loose
Sold out Brazilian Dumortierite in Quartz 2.012ct Loose Stone
Sold out スリランカ産エンスタタイト 2.159ctルース
Sold out オーストラリア産ボルダーオパール 4.470ctルース
Sold out Petalite 2.858ct loose
Sold out クリソベリルキャッツアイ 2.283ctルース
Sold out 2.393ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)
Sold out 2.077ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)
Sold out アルマンディンガーネット 2.076ct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.