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誕生石一覧

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Sold out 1 sky blue topaz stone (10mm, flower cut)《Discount available for multiple purchases》

1 sky blue topaz stone (10mm, flower cut)《Discount available for multiple purchases》

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》

【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》

【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 Brazilian Paraiba Tourmaline (Batalha Mine) Gacha 💎 Usually ¥45,800 With sorting, includes unheated. 《Multiple purchase discount available》

Brazilian Paraiba Tourmaline (Batalha Mine) Gacha 💎 Usually ¥45,800 With sorting, includes unheated. 《Multiple purchase discount available》
Sold out Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases.

Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases.
Sold out FANCY PURPLISH PINK/SI-1/with Pink Diamond Gacha (Multiple purchase discount available)

FANCY PURPLISH PINK/SI-1/with Pink Diamond Gacha (Multiple purchase discount available)
Sold out GGG（ガドリウムガリウムガーネット） 0.658ctルース

GGG (Gadolinium Gallium Garnet) 4.0mm/0.658ct Loose Stone
Sold out スリランカ産イエローサファイア 0.517ctルース

Sri Lankan Yellow Sapphire 0.517ct Loose Gemstone
Sold out カメレオンダイヤモンド 0.118ctルース(LIGHT GRAYISH GREENISH YELLOW, VS-2)

Chameleon Diamond 3.1mm/0.118ct Loose Stone (LIGHT GRAYISH GREENISH YELLOW, VS-2)
Sold out ブラジル産インディゴライトトルマリン 0.105ctルース

Brazil Indicolite Tourmaline 0.105ct Loose Stone with Gemstone Report
Sold out Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)
Sold out Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Sold out 《Limited to 2 Stones》Greenland Pink Sapphire Loose Stone (5.0mm, Heart-shaped, with Certificate) 《Multiple Purchase Discount Available》

《Limited to 2 Stones》Greenland Pink Sapphire Loose Stone (5.0mm, Heart-shaped, with Certificate) 《Multiple Purchase Discount Available》

Sold out 《Limited to 5 stones》Carving Gacha 💎 Green Quartz, Lemon Quartz, Blue Topaz 《Multiple Purchase Discount Available》

《Limited to 5 stones》Carving Gacha 💎 Green Quartz, Lemon Quartz, Blue Topaz 《Multiple Purchase Discount Available》
Sold out 《Limited to 6 sets》 Colombian Reverse Trapiche Emerald & Brazilian Emerald (Sugarloaf Cut) 2-Stone Set《Multiple purchase discount available》

《Limited to 6 sets》 Colombian Reverse Trapiche Emerald & Brazilian Emerald (Sugarloaf Cut) 2-Stone Set《Multiple purchase discount available》
Sold out Diamond rough (makeable) 0.353ct rough

Diamond rough (makeable) 0.353ct rough
Sold out Diamond rough (makeable) 0.279ct rough

Diamond rough (makeable) 0.279ct rough
Sold out Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]

Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]
Sold out Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)

Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)
Sold out Limited to 3 stones: Indian Andesine and Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone. Discounts available for multiple purchases.

Limited to 3 stones: Indian Andesine and Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone. Discounts available for multiple purchases.
Sold out 【猫カット】ブラジル産ゲーサイトインアメジスト 0.561ctルース

[Cat Cut] Brazilian Goethite Amethyst 0.561ct Loose Stone
Sold out 南アフリカ産ダイヤモンド原石（ソーヤブル） 0.083ct原石

South African diamond rough (sawable) 0.083ct rough

Sold out Limited to 5 stones: 1 loose Madagascar sapphire (3mm, hexagonal cut) Multiple purchase discounts available

Limited to 5 stones: 1 loose Madagascar sapphire (3mm, hexagonal cut) Multiple purchase discounts available
Sold out マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.352ctルース

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.352ct Loose Stone
Sold out Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available

Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available
Sold out ブラジル産パライバトルマリン 0.240ctルース

Paraiba tourmaline from Brazil 4.1mm/0.240ct loose

Sold out オーストラリア産ボルダーオパール 52.582ctルース

Australian boulder opal 52.582ct loose

Sold out 【ダンデライオンカット】メキシコ産ファイアオパール 7mm《コラボ》ルース ワッペン付

[Dandelion cut] Fire opal 7mm loose

Sold out 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

[Colorful] K18 lepidocrocite in quartz 2.37ct diamond ring

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

Almandine garnet cat's eye 1.820ct loose

Sold out Bicolor tanzanite 2.270ct loose

Bicolor tanzanite 2.270ct loose

Sold out 【ダンデライオンカット】シトリン 5.58ctルース（ライトカラー） - カラッツSTORE

[Dandelion cut] Citrine 5.58ct loose (light color)

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 [Available Oct 11, 10 PM] &lt;1 Stone Only&gt; GIA Certified Diamond: D Color / 4.3mm / 0.31ct / VS-2 / EXCELLENT (H&amp;A) <multi-buy discount available></multi-buy>

[Available Oct 11, 10 PM] <1 Stone Only> GIA Certified Diamond: D Color / 4.3mm / 0.31ct / VS-2 / EXCELLENT (H&A)

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》

[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 [10/4, 10 PM Release] Brazilian Amethyst 8.984ct Loose Gemstone

[10/4, 10 PM Release] Brazilian Amethyst 8.984ct Loose Gemstone
Sold out ロシア産ノンオイルエメラルド 0.096ctルース

[Available 10/9 at 10 PM] Russian non-oil emerald loose stone 0.096ct

Sold out コロンビア産パイライト・雲母インエメラルド 0.268ctルース 鑑別書

【Item 12564389】 Colombian Emerald with Pyrite and Mica Inclusions, 0.268ct Loose Gemstone
Sold out K18 オーロラ天女 アコヤ真珠（アコヤパール） ダイヤモンド0.02ct ブローチ 真科研

[Item No. 22602818] [Colorfully] 18K Akoya Pearl and 0.02ct Diamond Brooch with Certificate of Authenticity
Sold out [Available 10/3 at 10 PM] 《1 Stone Only》 Pink Diamond (0.184ct, 3.5mm, I-1, Fancy Light Pink, with sorting) - Regular price 110,000 JPY 《Multi-buy discount available》

[Available 10/3 at 10 PM] 《1 Stone Only》 Pink Diamond (0.184ct, 3.5mm, I-1, Fancy Light Pink, with sorting) - Regular price 110,000 JPY 《Multi-buy discount available》

Sold out [Lottery Sale_05][For Winners Only][Item No. 22602821] Pt950 Brazilian Alexandrite (Princess Cut) 0.09ct Diamond 0.044ct Ring

[Lottery Sale_05][For Winners Only][Item No. 22602821] Pt950 Brazilian Alexandrite (Princess Cut) 0.09ct Diamond 0.044ct Ring

Sold out [Lottery Sale_06][For Winners Only][Item 22602820] Pt950 Brazilian Alexandrite (Pear Shape Cut) 0.165ct Diamond 0.060ct Ring

[Lottery Sale_06][For Winners Only][Item 22602820] Pt950 Brazilian Alexandrite (Pear Shape Cut) 0.165ct Diamond 0.060ct Ring

Sold out モザンビーク産パライバトルマリン 0.145ctルース

[On sale 10/2 at 22:00] Mozambique Paraiba Tourmaline 0.145ct Loose Stone
Sold out コロンビア産ノンオイルエメラルドキャッツアイ 0.170ctルース

[Available 10/3, 10 PM] Colombian Non-Oiled Emerald Cat's Eye 0.170ct Loose Stone GIA

Sold out ブラジル産ライモナイトインブルートパーズ 4.800ctルース

[10/4, 10 PM Release] Brazilian Limonite-in-Blue Topaz 4.800ct Loose Stone
Sold out ブラジル産ライモナイトインブルートパーズ 8.117ctルース

[10/4, 10 PM Release] Brazilian Limonite-in-Blue Topaz 8.117ct Loose Gemstone
Sold out Pt900 アレキサンドライト0.15ct・ダイヤモンド0.08ctペンダントトップ（ネックレストップ）鑑別書

[Listing 22602762] [Colorify] Pt900 Alexandrite 0.15ct, Diamond 0.08ct Pendant Top (Necklace Top) with Appraisal Report

Sold out Brazilian Paraiba Tourmaline (Batalha Mine) Gacha 💎 Usually ¥45,800 With sorting, includes unheated. 《Multiple purchase discount available》

Brazilian Paraiba Tourmaline (Batalha Mine) Gacha 💎 Usually ¥45,800 With sorting, includes unheated. 《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.