Today's new arrivals

Gemstone Identification Guidebook (Not available for purchase separately; gift for purchases of 3,000 yen or more) Sale price¥0

Officially Licensed Yokohama DeNA BayStars Gold Mini Figure "DB.Starman" (Limited to 100 of each) Available in Silver or 18K Gold Sale priceFrom ¥12,800

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[On Sale 10/11 at 10 PM] [Limited to 18 stones] Brazilian Paraiba Tourmaline (Cabochon Cut, Approx. 2.2mm) Loose Stone [Multiple Purchase Discounts Available]

【10/11 22時販売】《限定15石》ファセットカット3石含む中国産シンシャ・辰砂1石ルース（全石鑑別書付き,平均1.02ct）1石ルース《複数購入割引有》 Sale price¥18,800

[Available at 10 PM on 10/11] [Limited to 15 stones] Blue Stone Gacha (Top Color Benitoite 2.0mm, Paraiba Tourmaline in Quartz, Unheated Yogo Sapphire) [Multiple Purchase Discounts Available] Sale price¥3,980

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Dragon Garnet x 1 (3.5mm, round cut) {Multiple purchase discount available}

1 dragon garnet stone (4.5mm, round cut) Sale price¥5,980

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[12534932] Purple Diamond (Treated) 0.088ct Loose

[10/11 22:00 Sale] Afghanistan Kunzite 3.340ct Loose Stone Sale price¥9,800

[On Sale 10/11 at 10 PM] Brazilian Paraiba Tourmaline 0.170ct Loose Stone (CuO: 2.1%, MnO: 1.1%) Sale price¥198,000

[12535099] Tanzanian Spessartine Garnet 0.209ct Loose Stone Sale price¥4,980

0.338ct loose blue sapphire from Madagascar Sale price¥18,800

[10/11 22:00 Sale] Indian Moonstone 1.046ct Loose Sale price¥9,800

[10/11 22:00 Sale] Mexican Cantera Opal 14.690ct Loose Sale price¥12,800

インターナリーダイヤモンド 0.25ルース(E, IF, 3Excellent) GIA

[On Sale at 10 PM on October 11th] Internal Diamond 4.1mm/0.250ct Loose (F, IF, 3 Excellent) GIA Sale price¥69,800

[10/11 22:00 Sale] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 2.698ct Loose Stone Sale price¥9,800

[10/11 22:00 Sale] Madagascar Iolite 0.707ct Loose Stone Sale price¥12,800

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Kenyan Tsavorite 3.9mm/0.257ct Loose Stone

Ruby 4.0mm/0.305ct loose stone Sale price¥45,800

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） 0.321ctルース

[10/11 22:00] Rainbow Garnet from Tenkawa Village, Nara Prefecture, 3.9mm/0.321ct Loose Stone (Rose Cut) Sale price¥8,800

[On sale from 10/11 at 10 PM] 18K Yellow Gold Myanmar Jadeite and Emerald 0.434ct Ring Sale price¥79,800

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【10/13 22時販売】《限定8石》ブラジル産デンドリティッククォーツの子猫カット1石ルース（初心者向け）（5mm）《複数購入割引有》 Sale price¥3,980

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【10/12 22時販売】《限定8石》ミニカイトカット1石ルース（パライバトルマリン2石含む、グリーンベリル、ルビー、ペリドットなど）《複数購入割引有》 Sale price¥2,980

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【10/12 22時販売】《限定10石》ブルー石ガチャ（ブラジル産パライバトルマリン0.088ct、ジンバブエ産ユークレース、コバルトガーナイト）《複数購入割引有》 Sale price¥7,980

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[On Sale 10/12 at 10 PM] [Limited to 10 stones] Unheated Sapphire (3.5mm, Round Cut) from Theppanawa Mine, Sri Lanka (Loose) [Multiple Purchase Discounts Available] Sale price¥4,980

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【9/12 22時販売】《限定7石》ロシア産ノンオイルエメラルド1石ルース(1.5-1.6ｍｍ,ステップカット)《複数購入割引有》 Sale price¥5,980

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【10/12 22時販売】《限定5石》グリーンランド産ルビー1石ルース（約2.3mm,トップカラー,証明書付）《複数購入割引有》 Sale price¥5,980

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【10/12 22時販売】《数量限定》ミャンマー産グレースピネル・プラチナスピネル（2.0mm,ラウンドカット）1石ルース《複数購入割引有》 Sale price¥4,980

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【10/12 22時販売】《限定3石》ミャンマー産グレースピネル・プラチナスピネル（4.0mm,ラウンドカット）1石ルース《複数購入割引有》 Sale price¥5,980

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【9/13 22時販売】《限定10石》カラーチェンジガチャ1石（ミャンマー産カラーチェンジジルコン、カラーシフトサファイア、2.2ctのカラーチェンジガーネットなど）《複数購入割引有》 Sale price¥6,980

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[Available at 10/12 22:00] 18K Yellow Gold Brazilian Santa Maria Aquamarine 0.284ct Pendant (Necklace) Sale price¥49,800

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【10/12 22時販売】「紫陽夜」アイスブルーサファイア、アメシスト、ベキリーブルーガーネット、タンザナイト１３石ハーフエタニティリングセット（2.0mm) Sale price¥98,000

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【10/12 22時販売】オーストラリア産クリスタル＆ホワイトオパール１３石ハーフエタニティリングセット（2.0mm) Sale price¥79,800

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【10/12 22時販売】タンザニア産コーネルピン（合計1.103ct）９石ハーフエタニティリングセット（3.0mm) Sale price¥118,000

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【10/12 22時販売】タンザニア産コーネルピン（合計1.151ct）・９石ハーフエタニティリングセット（3.0mm) Sale price¥128,000

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Tanzanian bicolor sapphire 0.955ct loose stone Sale price¥39,800

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Cambodian Blue Zircon (Ratanakiri Blue) 2.232ct Loose Stone Sale price¥79,800

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Cambodian Blue Zircon (Ratanakiri Blue) 1.513ct Loose Stone Sale price¥59,800

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Cambodian Blue Zircon (Ratanakiri Blue) 2.822ct Loose Stone Sale price¥98,000

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[10/12 22:00 Sale] Brazilian Rubellite 2.588ct Loose Stone Sale price¥69,800

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[10/12 22:00 Sale] Pigeon Blood Ruby 0.320ct Loose Stone AIGS Sale price¥48,800

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[12560908] Shinsha (Cinnabar) 1.257ct Loose Stone Sale price¥25,800

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[12560909] Shinsha (Cinnabar) 0.983ct Loose Stone Sale price¥22,800

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[Published on 12560910] Shinsha (Cinnabar) 0.965ct Loose Stone Sale price¥22,800

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[Published on 12560911] Shinsha (Cinnabar) 1.908ct Loose Stone Sale price¥27,800

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[12560907] Shinsha (Cinnabar) 1.358ct Loose Stone Sale price¥22,800

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[Published on 12560913] Shinsha (Cinnabar) 1.704ct Loose Stone Sale price¥25,800

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[Published on 12560912] Shinsha (Cinnabar) 1.786ct Loose Stone Sale price¥25,800

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.