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Sold out グランディディエライト原石 1石
Sold out Dragon Garnet 1 stone (3.0mm, round cut)《Discount available for multiple purchases》
Sold out アイスブルーカラーの合成モアッサナイト1石ルース(5mm,アイスブルー)
Sold out クリソベリルキャッツアイ 1石(2月新誕生石)
Sold out 1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》
Sold out Synthetic alexandrite 1 stone (round, mele size)《Discount available for multiple purchases》
Sold out 【宝石商の道具】冷却ヒビ入れ染色クォーツ・天然エメラルド見分け2点セット - KARATZ STORE|カラッツSTORE
Sold out ライモナイトインクォーツ(オーロラクォーツ) 1石 ルース
Sold out Limited to 20 stones, Brazilian dendritic quartz, 1 loose stone, multiple purchase discounts available
Sold out [Available at 10 PM on September 7th] Limited Quantity Gem Gacha 💎 Win 1 or 2 gems, including pink diamonds and 46ct cantera opals. Discounts available for multiple purchases.
Sold out [On sale from 10pm on 5/5] Limited to 11 stones Russian Demantoid Garnet (2-2.3mm, round cut, with horsetail) 1 stone [Multiple purchase discounts available]
Sold out Rhodolite garnet (octagonal cut) 1ct 1 stone
Sold out [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]
Sold out 《再販売》ハイヒール(スモーキークォーツ)1石《宝石ハイヒール》》6個 - カラッツSTORE
Sold out 【猫カット】ローズクォーツ(8mm) - カラッツSTORE
Sold out [On Sale 10/13 at 10 PM] [Limited to 10 Stones] Bicolor Gacha 💎 Includes two Zimbabwean euclase stones (average 0.088 carats), a 1.03 carat bicolor sapphire, a bicolor chrysoberyl, and more. [Multiple purchase discounts available]
Sold out [Limited to 8 stones] Jam Gacha💎 1 Rainbow Garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]
Sold out Russian demantoid garnet (2mm, round cut) 1 stone (discount available for multiple purchases)
Sold out クリノゾイサイト 1石 (ピクセルカット) - KARATZ STORE|カラッツSTORE
Sold out [Limited to 7 stones] Gem gacha💎 Australian opal or Mexican cantera opal 1 loose stone (with defects) [Multiple purchase discount available]
Sold out Limited to 7 stones: 1 loose kyanite stone from Nepal (royal blue color, 4mm, round cut) Multiple purchase discounts available
Sold out [Available at 10 PM on September 21st] Rainbow Garnet (Rose Cut, 3.0-5.5mm) Loose Stone from Tenkawa Village, Nara Prefecture (Multiple Purchase Discounts Available)
Sold out [On sale September 5th at 10 PM] [Only one left] Russian Demantoid Garnet Loose Stone (Oval Cut, Approx. 3 x 2mm) [Multiple Purchase Discounts Available]
Sold out Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available
Sold out クリノゾイサイト 1石 - KARATZ STORE|カラッツSTORE
Sold out [On sale 10/31 at 10 PM] Garnet Gacha Loose Stone Set with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)
Sold out 【さくらインカット】ティンカーベルクォーツ6.480ctルース - カラッツSTORE
Sold out Lavender Quartz 1 stone (Scorollite) 3ct 1 stone《Multiple purchase discount available》
Sold out 【12533788掲載】ティンカーベルクォーツ(ピンクファイヤークォーツ) 4.764ctルース
Sold out ティンカーベルクォーツ(ピンクファイヤークォーツ) 3.968ctルース
Sold out 【カメリアカット】レモンクォーツ8mmルース 直筆サイン付&ワッペン付 - カラッツSTORE
Sold out 【カラフリ】K18レピドクロサイトインクォーツ2.37ct・ダイヤモンドリング - カラッツSTORE
Sold out 【12525545掲載】アルマンディンガーネットキャッツアイ 1.820ctルース
Sold out デュモルチェライトインクォーツ 0.350ctルース
Sold out ブラジル産ラズライトインクォーツ 0.283ctルース
Sold out ロシア産デマントイドガーネット(ホーステール認む) 0.135ctルース
Sold out 合成モアッサナイト 6.704ctルース
Sold out ローズクォーツ 8.640ctルース
Sold out 【ゆきんこカット】YAG(イットリウムアルミニウムガーネット) 1.391ctルース 鑑別書
Sold out メデューサクォーツ(パライバクォーツ) 1.098ctルース
Sold out 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) 4.868ctルース
Sold out Pt950 バイカラーサファイア 0.398ct リング
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) 0.577ctルース
Sold out ブラジル産ゴーシェナイト 1.611ct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.