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Sold out US Benitoite 0.148ct Loose Stone (Emerald Cut) with Gem Identification Report
Sold out ミャンマー産ピンクグロッシュラーガーネット 0.558ctルース
Sold out 南アフリカ産ダイヤモンド原石(ソーヤブル) 0.280ct原石
Sold out [Sales start 10 PM, Aug. 10] Andesine-Labradorite Gacha with a Chance to Win a Dandelion Cut Worth 69,800 JPY (Limited to 12 Stones) (Plus 1 Andesine-Labradorite Stone) [Bulk Purchase Discount Available]
Sold out マダガスカル産パパラチアサファイア 0.690ctルース 中宝鑑
Sold out ブラジル産サンタマリアアクアマリン 0.339ctルース
Sold out ナイジェリア産マンダリンガーネット 1.347ctルース
Sold out アフガニスタン産ハックマナイト 0.142ctルース
Sold out [On sale August 15th at 10 PM] Paraiba Gacha where you can win a Brazilian Paraiba Tourmaline (CuO: 1.4%, MnO: 2.7%) normally priced at 39,800 yen, limited to 10 stones. (Multiple purchase discount available)
Sold out [On sale 8/12, 10 PM] "Limited to 10 stones" Strong Fire Gem Gacha featuring 3mm Benitoite and Blue Zircon, normally 42,800 yen (multiple purchase discount available)
Sold out [On sale 8/14 at 10 PM] Limited to 10 Stones: Rhodolite Garnet Gacha with a chance to win a "Dandelion Cut 9mm" collaboration with Shimizu Kiseki, normally 35,800 yen (Multiple purchase discount available)
Sold out [On Sale 10 PM, June 7] *Limited to 3 Sets* 1.0ct/D/VS-VVS/IDEAL Lab-Grown Diamond (Synthetic Diamond) & 2 Rare Cabochon Stones (Total of 3 Stones Included) *Multiple Purchase Discount Available*
Sold out [On Sale 10 PM, June 7] *Limited to 3 Sets* 1.0ct/D/VS-VVS/IDEAL Lab-Grown Diamond (Synthetic Diamond) & 2 Rare Cabochon Stones (Total of 3 Stones Included) *Multiple Purchase Discount Available*
Sold out 【スターインカット】メキシコ産ファイアオパール 7mm/0.678ctルース ワッペン付
Sold out K18PG あずきチェーン(小豆チェーン) 約40cm
Sold out Pt850 ベネチアンチェーン 約40cm
coming soon 【Lottery Sale 0829】Internally Flawless Diamond (H&C) 0.413ct Loose Stone (D, IF, 3Excellent H&C)
coming soon [Lottery Sale] Pink Diamond 0.055ct Loose (FANCY INTENSE PURPLISH PINK, SI2)
coming soon 【32501974掲載】カメレオンダイヤモンド 0.226ctルース(FANCY LIGHT GRAY GREENISH YELLOW(カメレオン), VS2)
coming soon 【12564093掲載】カンボジア産ブルージルコン(ラタナキリブルー) 3.363ctルース
Sold out ジンバブエ産スフェーン 0.669ctルース
Sold out ジンバブエ産スフェーン 0.499ctルース
Sold out K18 血赤珊瑚 0.33ctct ペンダント(ネックレス)
Sold out パキスタン産ラズライト(天藍石) 0.097ctルース
Sold out Amber / Copal 41.008 ct Loose (with insect inclusion)
Sold out ブラジル産グリーントルマリン 0.906ctルース
Sold out ジンバブエ産ユークレース 0.066ctルース
Sold out ジンバブエ産ユークレース 0.081ctルース
Sold out ジンバブエ産ユークレース 0.058ctルース
Sold out K18WG スクリューチェーン ネックレス 約45cm 長さ調整可能
Sold out [On sale August 1 at 10 PM] Limited 10 Stones: Sapphire Gacha (including unheated cornflower blue sapphires, normally ¥69,800), with a bonus Sange sapphire. Multiple purchase discount available.
Sold out Pt900 ピンクサファイア 0.465ct・ダイヤモンド0.12ctリング 鑑別書
Sold out コロンビア産パイライト・雲母インエメラルド 0.271ctルース 鑑別書
Sold out スリランカ産ブルーサファイア 0.566ctルース 日独鑑
Sold out ブラジル産ルベライト 0.285ctルース
Sold out タンザニア産カラーチェンジウィンザーサファイア 0.621ctルース
Sold out ドイツ産アウイナイト 0.081ctルース
Sold out アメリカ産レッドベリル 0.099ctルース
Sold out [Limited to 4 Stones] Sri Lanka Kolonna Dunilite - All Stones with Gemstone ID Report [Bulk Purchase Discount Available]
Sold out ミッドウェー産さんご (珊瑚) 38.585ct原木(枝)
Sold out 高知県産血赤珊瑚 24.829ct 枝(原木)
Sold out オーストラリア産ブラックオパール 0.702ctルース
Sold out [On sale August 2nd at 10 PM JST] Limited to 15 stones: Peridot Gacha (August birthstone gacha) including a certificated parasitic peridot, normally ¥79,800. 1 stone with a free princess-cut peridot. Multiple purchase discount available.
Sold out 《Limited to 10 Stones》Jeremejevite Gacha with a Chance to Win Jeremejevite (Including with Certificate) Normally ¥39,800《Multiple Purchase Discount Available》
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) 1.926ct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) 2.763ctルース
Sold out [On sale 7/22 at 10 PM] Limited to 10 Stones: Sapphire Gacha featuring a Certified Padparadscha Sapphire! (Multiple Purchase Discount Available)
Sold out [Limited to 16 Stones] Yellow Diamond Gacha including Sorting [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.