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Sold out ダイヤモンド 1.261ctルース(D, SI1) - KARATZ STORE｜カラッツSTORE

Diamond 1.261ct loose (D, SI1)

Sold out パープルダイヤモンド 0.170ctルース(FANCY PINK PURPLE, SI2) GIA付 - KARATZ STORE｜カラッツSTORE

Purple diamond 0.170ct loose (FANCY PINK PURPLE, SI2) with GIA

Sold out 【再入荷】鉱物標本スタンドとサンストーンorアイオライトの2点セット - KARATZ STORE｜カラッツSTORE

[Restocked] 2-piece set of mineral specimen stand and sunstone or iolite

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

[Jeweler's Tools] Cooling Cracked Dyed Quartz/Natural Emerald Identification 2-piece Set (Discount available for multiple purchases)

Sold out トラピッチェルビー 1石 - KARATZ STORE｜カラッツSTORE

Trapichell Bee 1 stone《Multiple purchase discount available》

Sold out 【お団子】カーネリアン 13.28ctルース（金平糖の生みの親・中野氏作品） - カラッツSTORE

[Dumpling] Carnelian 13.28ct loose (made by Mr. Nakano, the creator of konpeito)

Sold out 【セミオーダー代込】ダンデライオンカットカットのモルガナイトリング - KARATZ STORE｜カラッツSTORE

[Dandelion cut] Morganite

Sold out 【11521376掲載】インディゴライトトルマリン 2.46ctルース

Indigolite tourmaline 2.471ct loose with DGL

Sold out 【甲州貴石切子】スフェーン 2.060ct - カラッツSTORE

[Koshu Precious Stone Kiriko] Sphene 2.060ct

Sold out 【セミオーダー代込】甲州貴石切子のアイオライトサンストーンリング - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] Iolite Sunstone 1.310ct Loose

Sold out 【甲州貴石切子】デュモルチェライトインクォーツ - カラッツSTORE

[Koshu Precious Stone Kiriko] Dumortierite in Quartz

Sold out [Koshu Precious Stone Kiriko] Oregon Sunstone 4.60ct Loose

[Koshu Precious Stone Kiriko] Oregon Sunstone 4.60ct Loose

Sold out 【さくらインカット】Pt950スイスブルートパーズ2.01ct ペンダント（ネックレス） - カラッツSTORE

[Sakura Incut] Pt950 Swiss Blue Topaz 2.01ct Pendant (Necklace)

Sold out Rhodolite garnet (octagonal cut) 1ct 1 stone

Rhodolite garnet (octagonal cut) 1ct 1 stone

Sold out 【宝石商の道具】加熱処理のエチオピア産オパール 1石（ブラックオパールとの見分けシート付） - カラッツSTORE

1 heat-treated Ethiopian opal (includes a sheet to distinguish it from black opal)

Sold out Cobalt Garnite 1 stone (discount available for multiple purchases)

Cobalt Garnite 1 stone (discount available for multiple purchases)

Sold out Lavender Quartz 1 stone (Scorollite) 3ct 1 stone《Multiple purchase discount available》

Lavender Quartz 1 stone (Scorollite) 3ct 1 stone《Multiple purchase discount available》

Sold out Red spinel rough stone 1 stone (raspberry color)《Discount available for multiple purchases》

Red spinel rough stone 1 stone (raspberry color)《Discount available for multiple purchases》

Sold out 【12521587掲載】ブラジル産パライバトルマリン 0.164ctルース

Brazilian Paraiba tourmaline 0.164ct loose pear (half moon cut)

Sold out 【さくらインカット】オレゴンサンストーン 1.55ctルース - カラッツSTORE

[Sakura Incut] Oregon Sunstone 1.55ct Loose

Sold out Morganite raw stone + 2 loose pieces (orange/pink, approx. 6 x 4 mm) 3-piece set《Multiple purchase discount available》

Morganite raw stone + 2 loose pieces (orange/pink, approx. 6 x 4 mm) 3-piece set《Multiple purchase discount available》

Sold out 【ダンデライオンカット】アルマンディンガーネット 1.60ctルース - カラッツSTORE

[Dandelion cut] Almandine garnet 1.60ct loose

Sold out 【12521754掲載】ロシア産デマントイドガーネット（ホーステール認む） 0.66ctルース

Russian demantoid garnet (horsetail recognized) 0.66ct loose

Sold out 【12521755掲載】グリーントルマリン 7.79ctルース

Blue green tourmaline 7.79ct loose

Sold out 【12521756掲載】ビルマ産非加熱スタールビー 1.55ctルース

Burmese unheated star ruby ​​1.55ct loose with GIA

Sold out Synthetic alexandrite 1 stone (round, mele size)《Discount available for multiple purchases》

Synthetic alexandrite 1 stone (round, mele size)《Discount available for multiple purchases》

Sold out 【お子様限定】宝石磨きに挑戦してみよう「自分で出来る原石磨きセット」（フローライト・宝石アイシングクッキー付き）

[For kids] Let's try gem polishing "Do-it-yourself rough stone polishing set" (includes fluorite and gemstone icing cookies) *Subject to gemstone polishing contest*

Sold out [Jeweler's Tools] 2-piece loose tweezers set with stopper (for small jewelry)

[Jeweler's Tools] 2-piece loose tweezers set with stopper (for small jewelry)

Sold out Pt900ブラジル産パライバトルマリンピンキーリング - カラッツSTORE

Pt900 Paraiba tourmaline pinky ring from Brazil

Sold out Pt900バイカラーサファイア0.146 ピンキーリング - カラッツSTORE

Pt900 Bicolor Sapphire 0.146 Pinky Ring

Sold out Pt950ブラジル産パライバトルマリン0.09 リング - カラッツSTORE

Pt950 Brazilian Paraiba Tourmaline 0.09 Ring

Sold out Pt950ダイヤモンド 1.00ct フープピアス - カラッツSTORE

Pt950 diamond 1.00ct hoop earrings

Sold out K18オレゴンサンストーン1.60ct ピアス - カラッツSTORE

K18 Oregon sunstone 1.60ct earrings

Sold out 【11521940掲載】スリランカ産ロイヤルブルーサファイア 0.860ctルース

Royal blue sapphire from Sri Lanka 0.860ct loose with AIGS

Sold out 【11521941掲載】スリランカ産ロイヤルブルーサファイア 0.360ctルース

Royal blue sapphire from Sri Lanka 0.360ct loose with AIGS

Sold out 【11521944掲載】非加熱ピジョンブラッドルビー 0.560ctルース

Unheated pigeon blood ruby ​​0.560ct loose with AIGS

Sold out Hackmanite 1 stone (purple)

Hackmanite 1 stone (purple)

Sold out Ametrine 1 stone (approximately 60~70ct)《Discount available for multiple purchases》

Ametrine 1 stone (approximately 60~70ct)《Discount available for multiple purchases》

Sold out Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for advanced users: rough spinel from Mozambique)

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for advanced users: rough spinel from Mozambique)

Sold out 宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（中級者向け：アンデシン）

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for intermediate users: iolite rough stone)
Sold out アイオライト原石・ルース 2石セット - カラッツSTORE

Iolite rough stone/loose 2 stone set《Multiple purchase discount available》

Sold out Ametrine 1 stone (approximately 40~50ct)

Ametrine 1 stone (approximately 40~50ct)

Sold out Pt900エメラルド0.17ct・ダイヤモンドリング - カラッツSTORE

Pt900 emerald 0.17ct/diamond ring

Sold out K18WGブルートパーズリング - カラッツSTORE

K18WG blue topaz ring

Sold out K18WGブルートパーズ・タンザナイトリング - カラッツSTORE

K18WG blue topaz tanzanite ring

Sold out K18ルビー・ピンクサファイア・ダイヤモンドリング - カラッツSTORE

K18 ruby ​​pink sapphire diamond ring

Sold out K18タンザナイト0.60ct リング - カラッツSTORE

K18 tanzanite 0.60ct ring

Sold out Pt900ピジョンブラッドルビー 0.30ct リング AIGS付 - カラッツSTORE

Pt900 Pigeon Blood Ruby 0.30ct Ring with AIGS

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.