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Sold out アフガニスタン産ブルーサイト 1.424ctルース
Sold out バイカラータンザナイト 3.018ct原石
Sold out インターナリーフローレスダイヤモンド 0.340ctルース(D, IF,マーキースカット) GIA
Sold out パキスタン産ルビーインクォーツ 1.429ctルース
Sold out YAG(イットリウムアルミニウムガーネット) 1.709ctルース
coming soon K18WG アコヤ真珠(アコヤパール)5.1mm ピアス 鑑別書
coming soon Pt900 黒蝶真珠(タヒチパール) 13.1mmct ダイヤモンド0.08ctリング
Sold out カラーシフトアメジスト 1.283ctルース
coming soon アメリカ産オレゴンサンストーン 1.903ctルース
coming soon アメリカ産オレゴンサンストーン 1.664ctルース
coming soon アメリカ産オレゴンサンストーン 1.197ctルース
Sold out ブラジル産ピンクトルマリン 0.628ctルース
Sold out スリランカ・ウバ産ムーンストーン 0.566ctルース
Sold out アメリカ産オレンジベニトアイト 0.035ctルース
Sold out ジンバブエ産ユークレース 0.025ctルース
coming soon スリランカ産ロッククリスタル 7.581ctルース
coming soon エチオピア産パライバトルマリン 0.158ctルース(CuO:2.618%、Mno:0.688%)
Sold out [On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"
Sold out [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》
Sold out [On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"
coming soon [On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"
Sold out [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》
Sold out 【10/30 22時販売】《限定10石》ブラジル産パライバトルマリン(CuO:1.22%,MnO:1.09%)やベニトアイトが当たるブルー宝石ガチャ(ロンドンブルートパーズ1石付)《複数購入割引有》
Sold out [10/ 22:00 Sale] 《Limited to 15 Stones》 Rare Stone Gacha 《Multiple Purchase Discount Available》
Sold out 【9/22:00 Release】 《6 Stones Only》 Moss Green Beryl Gacha, Avg. 1.07ct 《Multi-buy discounts available》
Sold out [On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"
Sold out 【10/25 22時販売】《限定2石》ドミニカ共和国産ラリマー(ローズカット、8.5~10mm、訳ありサンジェ氏カット)《複数購入割引有》
Sold out 【10/24 22時販売】《限定3石》アイスブルージルコン(ラウンドカット3.5~3.6mm、サンジェ氏)《複数購入割引有》
Sold out [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》
Sold out [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》
Sold out Pt900 コンクパール 0.54ct(火焔模様あり) ダイヤモンド 0.30ct ペンダント(ネックレス)鑑別書
Sold out [On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"
Sold out [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》
Sold out ブラジル産ライモナイトインブルートパーズ 5.124ctルース
Sold out シーブルーカルセドニー 2.001ctルース
Sold out コロンビア産パイライトインエメラルド 0.332ctルース
Sold out ミャンマー産ポードレッタイト 0.040ctルース
Sold out ミャンマー産ポードレッタイト 0.024ctルース
coming soon K18 コロンビア産エメラルド 0.17 0.18ct ダイヤモンド D0.09ct D0.09ctピアス鑑別書
Sold out オーストラリア産ブラックサファイア 5.833ctルース 鑑別書
Sold out スリランカ産バイカラーサファイア 0.405ctルース
Sold out マガガスカル産グリーンアパタイト 0.764ctルース
Sold out Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》
Sold out [Available 10/12 at 22:00] <limited to sets> Benitoite gradation 6-stone set including orange benitoite (peach benitoite) (1.75mm, includes top quality) <multi-purchase discount available></multi-purchase></limited>
Sold out [Available 10/31 at 10 PM] 《Limited to 10 stones》 Zimbabwe Euclase rough (regular price ¥49,800), Brazilian Paraiba Tourmaline (CuO: 1.8%, MnO: 0.1%), or Triplite rough gacha (includes 1 Hackmanite rough) 《Multi-buy discount available》
Sold out 【On sale 10/4 at 22:00】《Limited to 6 stones》 FANCY-color pink diamond gacha, including FANCY PINK, FANCY INTENSE, FANCY DEEP, and rose-cut stones (all stones include sorting reports)《Multi-purchase discount available》
Sold out 【On sale 10/4 at 22:00】《Limited to 6 stones》 FANCY-color pink diamond gacha, including FANCY PINK, FANCY INTENSE, FANCY DEEP, and rose-cut stones (all stones include sorting reports)《Multi-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.