Login

All

Sort by
1 stone of Brazilian blue tourmaline (3 x 4 mm pear shape/oval cut/3 x 5 mm pear shape/4 x 5 mm oval cut)《Discount available for multiple purchases》

1 stone of Brazilian blue tourmaline (3 x 4 mm pear shape/oval cut/3 x 5 mm pear shape/4 x 5 mm oval cut)《Discount available for multiple purchases》 Sale priceFrom ¥2,980

Additional charge: K18YG (base metal) + 5,000 yen Sale price¥5,000
TV anime "Shinkalion Change the World" x KARATZ collaboration postcard

TV anime "Shinkalion Change the World" x KARATZ collaboration postcard Sale price¥1,320
Diamond 1.2mm (VS class, DG color, round cut, melee diamond) 1 loose stone {Multiple purchase discounts available}

Diamond 1.2mm (VS class, DG color, round cut, melee diamond) 1 loose stone {Multiple purchase discounts available} Sale price¥1,980
化石採掘体験に挑戦してみよう「自分で出来る化石発掘体験セット」

Let's try the fossil mining experience "Do-it-yourself fossil excavation experience set" + bonus of fossil stickers, simple black light, and amber (copal) [Multiple purchase discounts available] Sale price¥2,980
[Available from 10 PM on August 11th] Gemstone Encyclopedia Playing Cards + 4 Gemstones in a Gemstone Lucky Bag (Valued at 10,000 yen)

[Available from 10 PM on August 11th] Gemstone Encyclopedia Playing Cards + 4 Gemstones in a Gemstone Lucky Bag (Valued at 10,000 yen) Sale price¥6,000
ピンクオパール・ブルーオパール2石セット（小・大サイズ） - KARATZ STORE｜カラッツSTORE

Pink opal/blue opal 2 stone set (small/large size)《Discount available for multiple purchases》 Sale priceFrom ¥1,980
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：プレーナイト・葡萄石）

Let's try jewelry polishing "Do-it-yourself rough stone polishing set" (for intermediate users: playnite/grape stone) Sale price¥2,980

Additional charge: K18YG (base metal) + 10,000 yen Sale price¥10,000
[Sales End on Sunday, August 31st] TV Anime "Blue Lock" x KARATZ Collaboration Chain Ring

[Sales End on Sunday, August 31st] TV Anime "Blue Lock" x KARATZ Collaboration Chain Ring Sale price¥16,500
【5/20 22時販売】ユーパーライト 1石 （平均28ct）原石《複数購入割引有》 - カラッツSTORE

Euperlite 1 stone approx. 20ct-25ct (Michigan, USA) {Multiple purchase discount} Sale price¥1,980
Book "Gemstone Encyclopedia" (KARATZ, editor: Keiichiro Koyama)

Book "Gemstone Encyclopedia" (KARATZ, editor: Keiichiro Koyama) Sale price¥2,640
Pt850 プラチナ 小豆チェーン （アズキ） 0.9mm - KARATZ STORE｜カラッツSTORE

Pt850 Platinum Red Bean Chain (Azuki Bean) 0.9mm [40cm/45cm free] Sale priceFrom ¥15,800
[Available on Saturday, August 16th at 10 PM] "PSYCHO-PASS: PROVIDENCE" x KARATZ Collaboration SPINEL Logo Motif Pendant

[Available on Saturday, August 16th at 10 PM] "PSYCHO-PASS: PROVIDENCE" x KARATZ Collaboration SPINEL Logo Motif Pendant Sale price¥25,800
【石から選ぶセミオーダーリング枠】レガート - カラッツSTORE

Legato "Semi-custom ring setting" Sale price¥74,800
TV anime "Shinkalion Change the World" x KARATZ collaboration acrylic key chain

TV anime "Shinkalion Change the World" x KARATZ collaboration acrylic key chain Sale price¥990
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：ホワイトラブラドライト）

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for intermediate users: white labradorite) Sale price¥3,980
1 Ruby from Greenland (round cut, 1.2mm)《Discount available for multiple purchases》

1 Ruby from Greenland (round cut, 1.2mm)《Discount available for multiple purchases》 Sale price¥2,280
Indian Andesine Labradorite (hexagonal cut, 3 x 5mm) 1 stone (discount available for multiple purchases)

Indian Andesine Labradorite (hexagonal cut, 3 x 5mm) 1 stone (discount available for multiple purchases) Sale price¥2,980
1 American Herkimer Diamond (rock crystal) 💎 (child-bearing type)《Multiple purchase discount available》

1 American Herkimer Diamond (rock crystal) 💎 (child-bearing type)《Multiple purchase discount available》 Sale price¥2,980
Euperlite 1 stone approx. 15ct-20ct (Michigan, USA) {Multiple purchase discount}

Euperlite 1 stone approx. 15ct-20ct (Michigan, USA) {Multiple purchase discount} Sale price¥2,580

Bezel setting (Fukurin) + 5,000 yen Sale price¥5,000

Additional fee + 10,000 yen Sale price¥10,000

Additional fee +5,000 yen Sale price¥5,000
ピンクスピネル1

1 stone loose pink spinel (princess cut, approx. 2.5mm)《Discount available for multiple purchases》 Sale price¥2,980
グリーンダイヤモンド（トリートメント）1石（約1.3mm)

Green Diamond (Treatment) 1 stone (approx. 1.3mm)《Multiple purchase discount available》 Sale price¥3,580
Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available}

Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available} Sale price¥1,580
【石から選ぶセミオーダーリング枠】ヴィヴァーチェ - カラッツSTORE

Vivace "Semi-custom ring setting" Sale price¥74,800
合成モアッサナイト1石ルース（ミントグリーン,オーバルカット,6×4mm)

Synthetic moissanite 1 stone loose (mint green, oval cut, 6 x 4 mm, moissanite)《Multiple purchase discount available》 Sale price¥3,980
Benitoite 1 stone (round cut, 2.0mm)《Multiple purchase discount available》

Benitoite 1 stone (round cut, 2.0mm)《Multiple purchase discount available》 Sale price¥12,800
Gem Gacha💎 Lepidolite in Quartz 1 stone《Multiple purchase discount available》

Gem Gacha💎 Lepidolite in Quartz 1 stone《Multiple purchase discount available》 Sale price¥3,980
Malachite 2 stone set loose (6mm, cushion cut)《Discount available for multiple purchases》

Malachite 2 stone set loose (6mm, cushion cut)《Discount available for multiple purchases》 Sale price¥1,000
[Sales start on Friday, August 22nd at 10:00 PM] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges (8 types in total)

[Sales start on Friday, August 22nd at 10:00 PM] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges (8 types in total) Sale price¥660
EDEL Semi-custom pinky ring frame

EDEL Semi-custom pinky ring frame Sale price¥49,800
Pisces "Semi-custom pendant frame"

Pisces "Semi-custom pendant frame" Sale price¥47,800
[Sales end on Sunday, August 31st] TV anime "Magical Girls and Evil Were Once Enemies" x KARATZ collaboration tin mirror featuring newly drawn illustration

[Sales end on Sunday, August 31st] TV anime "Magical Girls and Evil Were Once Enemies" x KARATZ collaboration tin mirror featuring newly drawn illustration Sale price¥770
スリランカ産サファイア《ラトゥナプラ》1石ルース(平均0.75ct)

Gem Gacha💎 Sri Lankan Sapphire《Ratnapura》1 loose stone (average 0.75ct)《Multiple purchase discount available》 Sale price¥5,980
Malachite 2 stone set loose (6 x 8mm, pear shape cut)《Multiple purchase discount available》

Malachite 2 stone set loose (6 x 8mm, pear shape cut)《Multiple purchase discount available》 Sale price¥1,000
ブラジル産ルチルレイテッドクォーツ1石ルース（6mm）《複数購入割引有》

Brazilian rutilated quartz (rutilated quartz) 1 loose stone (6mm) {Multiple purchase discounts available} Sale price¥1,500
[Available on Saturday, August 16th at 10 PM] "PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring - Enforcer Design [Tomoki Masatsugu Model] "Moonstone"

[Available on Saturday, August 16th at 10 PM] "PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring - Enforcer Design [Tomoki Masatsugu Model] "Moonstone" Sale priceFrom ¥25,800
Synthetic moissanite 1 stone loose (blue moissanite, 1.2mm)《Multiple purchase discount available》

Synthetic moissanite 1 stone loose (blue moissanite, 1.2mm)《Multiple purchase discount available》 Sale price¥1,000
American Anthill Garnet (Chrome Pyrope Garnet) 1 Stone Loose (Princess Cut, 2.5mm) {Multiple Purchase Discounts Available}

American Anthill Garnet (Chrome Pyrope Garnet) 1 Stone Loose (Princess Cut, 2.5mm) {Multiple Purchase Discounts Available} Sale price¥2,980
Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discount available}

Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discount available} Sale price¥1,580
1 green opal from Amazon《Discount available for multiple purchases》

1 green opal from Amazon《Discount available for multiple purchases》 Sale price¥2,980
【石から選ぶセミオーダーペンダント枠】アンドロメダ（チェーン一体型）

Andromeda "Semi-custom pendant frame and chain integrated" Sale price¥74,800
1 blue fluorescent diamond (H&C, 3EX, VS-SI class equivalent, 2.0mm) {Multiple purchase discount available}

1 blue fluorescent diamond (H&C, 3EX, VS-SI class equivalent, 2.0mm) {Multiple purchase discount available} Sale price¥8,980
On sale from 10 PM on Saturday, August 16th! "PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring - Enforcer Design [Yayoi Rokuitsuka Model] "Ice Blue Sapphire"

On sale from 10 PM on Saturday, August 16th! "PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring - Enforcer Design [Yayoi Rokuitsuka Model] "Ice Blue Sapphire" Sale priceFrom ¥25,800
ブラジル産アレキサンドライト・ムーンストーン2石セット（6月誕生石セット）《複数購入割引有》

《Limited to 32 stones》 Brazilian Alexandrite Moonstone 2 stone set (June birthstone set)《Multiple purchase discount available》 Sale price¥3,980

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の取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

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.