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モザンビーク産ルベライト 0.814ctルース

Mozambique rubellite 0.814ct loose stone Sale price¥39,800
Unheated ruby ​​0.430ct loose

Unheated ruby ​​0.430ct loose Sale price¥98,000
ロードライトガーネット 1.270ctルース

[On sale from 10/28 at 10pm] Rhodolite Garnet 1.270ct Loose Stone Sale price¥7,980
モザンビーク産ロードライトガーネット 0.835ctルース

[11/1 22:00 Sale] Mozambique Rhodolite Garnet 0.835ct Loose Stone Sale price¥12,800
[12558200] Labradorite 0.546ct loose stone

[12558200] Labradorite 0.546ct loose stone Sale price¥7,980
[12558199] Labradorite 0.903ct loose stone

[12558199] Labradorite 0.903ct loose stone Sale price¥9,800
アメリカ・デトロイトシティ産ロードクロサイト 1.884ctルース

Rhodochrosite 1.884ct loose from Detroit City, USA Sale price¥188,000
アメリカ・デトロイトシティ産ロードクロサイト 0.527ctルース

Rhodochrosite 0.527ct loose from Detroit City, USA Sale price¥45,800
アメリカ・デトロイトシティ産ロードクロサイト 0.516ctルース

Rhodochrosite 0.516ct loose from Detroit City, USA Sale price¥45,800
ルチルレイテッドクォーツ 6.402ctルース

Rutilated Quartz (Rutilated Quartz) 6.402ct Loose Sale price¥3,980
ローズクォーツ 18.410ctルース（パイナップルカット）

Rose quartz 18.410ct loose (pineapple cut) Sale price¥5,980
[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available]

[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available] Sale price¥3,980
ブラジル産ルチルクォーツ（ルチルレイテッドクォーツ） 5.333ctルース

[On Sale at 10 PM on October 25th] Brazilian Rutile Quartz (Rutiled Quartz) 12mm/5.333ct Loose Stone Sale price¥9,800
ドミニカ共和国産ラリマー 2.472ctルース

[On Sale at 10pm on October 25th] 2.472ct Larimar Loose Stone from the Dominican Republic Sale price¥6,980
ドミニカ共和国産ラリマー 2.568ctルース

[On Sale at 10pm on 10/23] 2.568ct Larimar Loose Stone from the Dominican Republic Sale price¥8,800
ロードライトガーネット 1.052ctルース

[On Sale at 10:00 PM on October 23rd] 1.052ct Rhodolite Garnet Loose Stone from Mozambique Sale price¥8,800
ピジョンブラッドルビー 0.320ctルース AIGS

[10/12 22:00 Sale] Pigeon Blood Ruby 0.320ct Loose Stone AIGS Sale price¥48,800
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） 0.439ctルース

[On Sale at 10 PM on October 18th] Rainbow Garnet (Andradite Garnet) 0.439ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥8,800
ピジョンブラッドルビー 0.290ctルース

[On Sale at 10 PM on October 17th] Pigeon Blood Ruby 4.0mm/0.290ct Loose Stone AIGS Sale price¥59,800
グリーンランド産ルビー 0.220ctルース

[On Sale at 10 PM on October 19th] Greenland Ruby 3.6mm/0.220ct Loose Stone with Certificate Sale price¥39,800
グリーンランド産ルビー 0.210ctルース

[On Sale at 10 PM on October 19th] Greenland Ruby 3.6mm/0.210ct Loose Stone with Certificate Sale price¥45,800
グリーンランド産ルビー 0.134ctルース

[On Sale at 10 PM on October 19th] Greenland Ruby 3.0mm/0.134ct Loose Stone with Certificate Sale price¥25,800
インド産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.450ctルース

[On Sale at 10 PM on October 19th] Indian Andesine Labradorite (also known as Rainbow Moonstone) 0.450ct Loose Stone Sale price¥9,800
[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery Sale price¥6,980
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：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
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 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
Brazilian rutilated quartz (rutile/rutile quartz (rutilated quartz)) 1 loose stone (6.0-6.5mm, for beginners) {Multiple purchase discounts available}

Brazilian rutilated quartz (rutile/rutile quartz (rutilated quartz)) 1 loose stone (6.0-6.5mm, for beginners) {Multiple purchase discounts available} Sale price¥2,580
Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available}

Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available} Sale price¥1,580
Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》

Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》 Sale price¥3,980
ルチルクォーツ1石ルース（12mm）《複数購入割引有》

Rutilated quartz 1 stone loose (12mm)《Multiple purchase discount available》 Sale price¥1,980
Limited to 8 stones: 1 unheated silky pink sapphire from Vietnam (including silky ruby) Discounts for multiple purchases available

Limited to 8 stones: 1 unheated silky pink sapphire from Vietnam (including silky ruby) Discounts for multiple purchases available Sale price¥4,980
Limited to 23 stones: Labradorite & Andesine Labradorite 2-stone set (Hexagonal cut, 3mm) Multiple purchase discounts available

Limited to 23 stones: Labradorite & Andesine Labradorite 2-stone set (Hexagonal cut, 3mm) Multiple purchase discounts available Sale price¥2,980
ラブラドライト1石ルース（12×16mm）《複数購入割引有》

Labradorite 1 stone loose (12 x 16mm)《Multiple purchase discount available》 Sale price¥2,580
Limited to 9 stones: 1 Afghan Lazurite in Sodalite loose stone (faceted cut, average 0.45ct) Multiple purchase discounts available

Limited to 9 stones: 1 Afghan Lazurite in Sodalite loose stone (faceted cut, average 0.45ct) Multiple purchase discounts available Sale price¥4,980
Limited to 18 stones: Mozambique ruby ​​(princess cut, 2.3-2.5mm) Multiple purchase discounts available

Limited to 18 stones: Mozambique ruby ​​(princess cut, 2.3-2.5mm) Multiple purchase discounts available Sale price¥3,980
January birthstone rhodolite garnet rough stone and loose stone set of 2 (from Zambia) {Multiple purchase discounts available} {For beginners}

January birthstone rhodolite garnet rough stone and loose stone set of 2 (from Zambia) {Multiple purchase discounts available} {For beginners} Sale price¥2,980
Limited to 11 stones: 1 loose Andesine Labradorite stone from Madagascar. Discounts available for multiple purchases.

Limited to 11 stones: 1 loose Andesine Labradorite stone from Madagascar. Discounts available for multiple purchases. Sale price¥3,980
Limited to 25 stones: One loose rhodochrosite stone (4mm cabochon cut) from Sutton Holm, USA. Discounts available for multiple purchases.

Limited to 25 stones: One loose rhodochrosite stone (4mm cabochon cut) from Sutton Holm, USA. Discounts available for multiple purchases. Sale price¥4,580
Limited to 11 stones: Brazilian rhodonite in quartz (cabochon, 7.5-8.5mm) 1 loose stone. Discounts available for multiple purchases.

Limited to 11 stones: Brazilian rhodonite in quartz (cabochon, 7.5-8.5mm) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980
[On sale at 10 PM on September 28th] [Limited to 9 sets] Rainbow Garnet Rough Stone + 2 Loose Stones Set from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]

[On sale at 10 PM on September 28th] [Limited to 9 sets] Rainbow Garnet Rough Stone + 2 Loose Stones Set from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available] Sale price¥6,980
Limited to 13 stones: One loose rhodochrosite stone (4mm cabochon cut) from Detroit City, USA. Discounts available for multiple purchases.

Limited to 13 stones: One loose rhodochrosite stone (4mm cabochon cut) from Detroit City, USA. Discounts available for multiple purchases. Sale price¥7,980
{2 stones remaining} 1 Labradorite loose stone (20 x 15 mm, for beginners) {Multiple purchase discounts available}

{2 stones remaining} 1 Labradorite loose stone (20 x 15 mm, for beginners) {Multiple purchase discounts available} Sale price¥3,980
ラブラドライト1石（球体,6mm）ルース

Labradorite 1 stone (spherical, 6mm) loose (multiple purchase discount available) Sale price¥2,980
Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available

Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available Sale price¥3,980
[Available at 10 PM on August 2nd] [Limited to 5 stones] Brazilian Rhodonite in Quartz (Faceted Cut) - 1 stone [Multiple purchase discounts available]

[Available at 10 PM on August 2nd] [Limited to 5 stones] Brazilian Rhodonite in Quartz (Faceted Cut) - 1 stone [Multiple purchase discounts available] Sale price¥4,980
マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 1.911ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.911ct loose stone Sale price¥39,800
[Available at 10 PM on October 5th] Limited to 4 stones: Sri Lankan Rhodolite Garnet (4mm, Round Cut) - 1 loose stone [Multiple purchase discounts available]

[Available at 10 PM on October 5th] Limited to 4 stones: Sri Lankan Rhodolite Garnet (4mm, Round Cut) - 1 loose stone [Multiple purchase discounts 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'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.