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誕生石一覧

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Sold out Pt900タンザナイト0.71ct リング - KARATZ STORE｜カラッツSTORE

[Dandelion Cut] Pt900 Tanzanite 0.71ct Ring

Sold out ブラックオパール 1.659ctルース - KARATZ STORE｜カラッツSTORE

Black opal 1.659ct loose

Sold out K18バイカラートルマリン1.087ct リング - KARATZ STORE｜カラッツSTORE

K18 bicolor tourmaline 1.087ct ring

Sold out Pt900バイカラータンザナイト1.009ct リング - KARATZ STORE｜カラッツSTORE

Pt900 bicolor tanzanite 1.009ct ring

Sold out インディゴライトトルマリン 1.253ctルース DGL付 - KARATZ STORE｜カラッツSTORE

Indigolite tourmaline 1.253ct loose with DGL

Sold out 非加熱ピジョンブラッドルビー 0.79ctルース AIGS付 - KARATZ STORE｜カラッツSTORE

Unheated pigeon blood ruby ​​0.79ct loose with AIGS

Diamond 0.220ct loose (E, VVS2, star)

Sold out ブラジル産パライバトルマリン 0.44ctルース GIA付 - KARATZ STORE｜カラッツSTORE

Paraiba tourmaline from Brazil 0.44ct loose with GIA

Sold out ブラジル産パライバトルマリン 0.84ctルース GIA付 - KARATZ STORE｜カラッツSTORE

Paraiba tourmaline from Brazil 0.84ct loose with GIA

Sold out Pt950ピンクダイヤモンド0.077ct リング（LIGHT BROWN PINK ,SI-1 ） - KARATZ STORE｜カラッツSTORE

Pt950 pink diamond 0.077ct ring (LIGHT BROWN PINK, SI-1)

Sold out Pt950ピンクダイヤモンド0.379ct リング（FANCY DEEP BROWNISH ORANGY PINK,SI2） - KARATZ STORE｜カラッツSTORE

Pt950 pink diamond 0.379ct ring (FANCY DEEP BROWNISH ORANGY PINK, SI2)

Sold out K18マリガーネット（グロッシュラー/アンドラダイト・ガーネット）0.20ct リング - KARATZ STORE｜カラッツSTORE

K18 Mari Garnet (Grossular/Andradite Garnet) 0.20ct Ring

Sold out K18PGパパラチアサファイア0.189ct リング DGL付 - KARATZ STORE｜カラッツSTORE

K18PG Padparadscha Sapphire 0.189ct ring with DGL

Sold out エメラルド 0.129ctルース - KARATZ STORE｜カラッツSTORE

Emerald 0.129ct loose

Sold out ブルーダイヤモンド (スターカット) 0.094ctルース(Treted FANCY INTENSE GREEN BLUE, VS1) - KARATZ STORE｜カラッツSTORE

Blue Diamond (Star Cut) 0.094ct Loose (Treted FANCY INTENSE GREEN BLUE, VS1)

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） 1.452ctルース 日独鑑付 - KARATZ STORE｜カラッツSTORE

Russian demantoid garnet (horsetail recognized) 1.452ct loose Japanese-German certified

Sold out Pt950バイカラータンザナイト0.661ct リング - KARATZ STORE｜カラッツSTORE

Pt950 bicolor tanzanite 0.661ct ring

Sold out Pt950ピンクダイヤモンド0.169ct リング（FANCY LIGHT BROWNISH PINK ） - KARATZ STORE｜カラッツSTORE

Pt950 pink diamond 0.169ct ring (FANCY LIGHT BROWNISH PINK)

Sold out K18ダイヤモンド0.21ct ペンダントトップ（ネックレストップ） - KARATZ STORE｜カラッツSTORE

K18 diamond 0.21ct pendant top (necklace top)

Sold out ブラジル産パライバトルマリン 0.47ctルース GIA付 - KARATZ STORE｜カラッツSTORE

Paraiba tourmaline from Brazil 0.47ct loose with GIA

Sold out ブラジル産パライバトルマリン 0.28ctルース GIA付 - KARATZ STORE｜カラッツSTORE

Paraiba tourmaline from Brazil 0.28ct loose with GIA

Sold out エメラルド 0.616ctルース - KARATZ STORE｜カラッツSTORE

Emerald 0.616ct loose

Sold out Pt950ビルマ産ピジョンブラッドルビー 0.37ct リング GIA付 - KARATZ STORE｜カラッツSTORE

Pt950 Burmese pigeon blood ruby ​​0.37ct ring with GIA

Sold out Pt950コロンビア産ノンオイルエメラルド0.48ct リング GIA付 - KARATZ STORE｜カラッツSTORE

Pt950 Colombian oil-free emerald 0.48ct ring with GIA

Sold out ロイヤルブルーサファイア 1.02ctルース GRS付 - KARATZ STORE｜カラッツSTORE

Royal blue sapphire 1.02ct loose with GRS

Sold out 非加熱ロイヤルブルーサファイア 0.79ctルース AIGS付 - KARATZ STORE｜カラッツSTORE

Unheated royal blue sapphire 0.79ct loose with AIGS

Sold out 「起源がわかる 宝石大全」初版＆宝石小瓶 2点セット

“An Encyclopedia of Gems that Understand the Origin” & Sapphire 2 Stone Set《Purchased in Chanthaburi, Thailand》

Sold out 【大人用】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」（初心者向け：バイカラーフローライト）・ボルダーオパール付※原石磨きコンテスト対象 ※

[For adults] Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for beginners: bicolor fluorite) with boulder opal *Subject to the rough stone polishing contest*

Sold out Diamond 2mm (VS class, DG color, round cut, melee diamond 2.0mm) 1 loose stone {Multiple purchase discounts available}

Diamond 2mm (VS class, DG color, round cut, melee diamond 2.0mm) 1 loose stone {Multiple purchase discounts available}
Sold out Dragon Garnet 1 stone (3.0mm, round cut)《Discount available for multiple purchases》

Dragon Garnet 1 stone (3.0mm, round cut)《Discount available for multiple purchases》
Sold out 「決定版 アンカットダイヤモンド」サイン入り初版本 ＆ダイヤモンド原石（グリーン蛍光）2点セット

"Definitive Uncut Diamond" by Kyoichi Suwa, signed first edition & 2-piece set of diamonds (hexagonal cut)

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 Blue moonstone (pyramid cut, 5 x 5 mm, 4 x 4 mm) 2 stone set《Discount available for multiple purchases》

Blue moonstone (pyramid cut, 5 x 5 mm, 4 x 4 mm) 2 stone set《Discount available for multiple purchases》

Sold out 【猫カット】アメジスト（8mm） - カラッツSTORE

[Cat cut] Amethyst (8mm)

Sold out 含浸ルビー・天然ルビー見分け2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] 2-piece set for distinguishing impregnated rubies and natural rubies (discount available for multiple purchases)

Sold out [Jeweler's Tools] {3 sets remaining} 3-piece set: Jewelry loupe (14x magnification), blue diamond, and pink tourmaline or sapphire

[Jeweler's Tools] {3 sets remaining} 3-piece set: Jewelry loupe (14x magnification), blue diamond, and pink tourmaline or sapphire
Sold out Dragon Garnet x 1 (3.5mm, round cut) {Multiple purchase discount available}

Dragon Garnet x 1 (3.5mm, round cut) {Multiple purchase discount available}
1 dragon garnet stone (4.5mm, round cut)

1 dragon garnet stone (4.5mm, round cut) Sale price¥5,980
Sold out Pink Diamond Gacha! 💎 Fancy Light Pink Diamond 0.117ct (Certified) Includes One UV-Resistant Pink Diamond (Multiple Purchase Discounts Available)

Pink Diamond Gacha! 💎 Fancy Light Pink Diamond 0.117ct (Certified) Includes One UV-Resistant Pink Diamond (Multiple Purchase Discounts Available)

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 Brazilian Paraiba Tourmaline (1.0mm, top quality)《Multiple purchase discount available》

Brazilian Paraiba Tourmaline (1.0mm, top quality)《Multiple purchase discount available》

Sold out 1 Ethiopian Opal (Baroque)《Discount available for multiple purchases》

1 Ethiopian Opal (Baroque)《Discount available for multiple purchases》

Sold out Limited to 15 sets: Two Nigerian tourmaline gemstones (October birthstone) Discounts available for multiple purchases

Limited to 15 sets: Two Nigerian tourmaline gemstones (October birthstone) Discounts available for multiple purchases
Sold out Gem Gacha💎 Trapiche Diamond (Sliced ​​Diamond) 1 stone {Multiple purchase discount available}

Gem Gacha💎 Trapiche Diamond (Sliced ​​Diamond) 1 stone {Multiple purchase discount available}

Sold out グリーンランド産アイスルビー 1石（ハートシェイプ,4mm,ピンクサファイア）《複数購入割引有》

Greenland Ice Ruby 1 stone (heart shape, 4mm, pink sapphire) {Multiple purchase discount available}

Sold out 1 Brazilian Paraiba tourmaline stone (cabochon cut, average 0.25 ct)

1 Brazilian Paraiba tourmaline stone (cabochon cut, average 0.25 ct)

Sold out 【猫カット】ムーンストーン（6mm） - カラッツSTORE

[Cat cut] Moonstone (6mm)《Multiple purchase discount available》

Sold out 1 loose sapphire from Ratnapura, Sri Lanka (3.0mm-4.0mm, trilliant cut)《Multiple purchase discount available》

1 loose sapphire from Ratnapura, Sri Lanka (3.0mm-4.0mm, trilliant cut)《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.