Login

Ta line

Sort by
[12/12 10 PM Sale] Limited to 15 stones! Includes a rare UNEVEN Fancy color gemstone (normally ¥39,800) and a 0.428ct Fancy color gemstone (¥69,800). Get one loose yellow diamond! Discounts available for multiple purchases.

[12/12 10 PM Sale] Limited to 15 stones! Includes a rare UNEVEN Fancy color gemstone (normally ¥39,800) and a 0.428ct Fancy color gemstone (¥69,800). Get one loose yellow diamond! Discounts available for multiple purchases. Sale price¥3,980
[12/13 10 PM Sale] {Limited to 13 Stones} Tourmaline Gacha: Including Indigolite Tourmaline worth ¥50,000 and Rubellite worth ¥60,000. Plus, get one Canary Yellow Tourmaline. {Multiple Purchase Discounts Available}

[12/13 10 PM Sale] {Limited to 13 Stones} Tourmaline Gacha: Including Indigolite Tourmaline worth ¥50,000 and Rubellite worth ¥60,000. Plus, get one Canary Yellow Tourmaline. {Multiple Purchase Discounts Available} Sale price¥5,980
December Special Campaign: Limited to 14 stones. December birthstone: Tanzanite, loose stone (5x7mm, oval cut). Multiple purchase discounts available.

December Special Campaign: Limited to 14 stones. December birthstone: Tanzanite, loose stone (5x7mm, oval cut). Multiple purchase discounts available. Sale price¥8,800
デマントイドガーネットキャッツアイ（ホーステール認む） 0.171ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 0.171ct loose Sale price¥15,800
デマントイドガーネットキャッツアイ（ホーステール認む） 0.222ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 0.222ct loose Sale price¥18,800
ミントカラートルマリン 0.198ctルース

Mint color tourmaline 0.198ct loose Sale price¥4,980
ミントカラートルマリン 0.229ctルース

Mint color tourmaline 0.229ct loose Sale price¥4,980
ピンクトルマリン 0.205ctルース

Pink tourmaline 0.205ct loose Sale price¥4,980
トルコ産ダイアスポア 1.209ctルース

Diaspore 1.209ct loose from Türkiye Sale price¥15,800
トルコ産ダイアスポア 0.636ctルース

Diaspore from Türkiye 0.636ct loose Sale price¥9,800
トルマリンキャッツアイ 0.910ctルース

Tourmaline cat's eye 0.910ct loose Sale price¥4,980
ダンビュライト 1.427ctルース

Danburite 1.427ct loose stone Sale price¥3,980
Brazilian dumortierite in quartz 4.592ct loose

Brazilian dumortierite in quartz 4.592ct loose Sale price¥9,800
[12/17 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 4.2mm/0.325ct Loose Stone

[12/17 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 4.2mm/0.325ct Loose Stone Sale price¥59,800
[12/7 22:00] Brazilian Dumortierite in Quartz 16.250ct Loose Stone

[12/7 22:00] Brazilian Dumortierite in Quartz 16.250ct Loose Stone Sale price¥9,800
[12/14 22:00 Sale] Tanzanian Chrome Tourmaline 0.164ct Loose Stone

[12/14 22:00 Sale] Tanzanian Chrome Tourmaline 0.164ct Loose Stone Sale price¥9,800
[12/14 22:00] Brazilian Pink Tourmaline 5.0mm/0.484ct Loose Stone (Rose Cut)

[12/14 22:00] Brazilian Pink Tourmaline 5.0mm/0.484ct Loose Stone (Rose Cut) Sale price¥8,800
[12/12 22:00 Sale] Brazilian Dumortierite in Quartz 1.131ct Loose Stone

[12/12 22:00 Sale] Brazilian Dumortierite in Quartz 1.131ct Loose Stone Sale price¥12,800
[12/13 22:00 Sale] Brazilian Green Tourmaline 0.821ct Loose Stone

[12/13 22:00 Sale] Brazilian Green Tourmaline 0.821ct Loose Stone Sale price¥12,800
Chrome tourmaline 0.300ct loose stone

Chrome tourmaline 0.300ct loose stone Sale price¥2,980
ダイヤモンド原石（メイカブル） 0.247ct原石

Yellow diamond rough stone (makeable) 0.247ct rough stone Sale price¥22,800
【12546396掲載】スリランカ産ゲーサイトイントパーズ 3.200ctルース

Sri Lankan Goethite Into Topaz 3.200ct loose Sale price¥4,980
[12/22 22:00] Brazilian Green Tourmaline 3.102ct Loose Stone

[12/22 22:00] Brazilian Green Tourmaline 3.102ct Loose Stone Sale price¥69,800
[12/21 22:00] Brazilian Bicolor Tourmaline 7.268ct Loose Stone

[12/21 22:00] Brazilian Bicolor Tourmaline 7.268ct Loose Stone Sale price¥158,000
[12/21 22:00] Zambian Bicolor Tourmaline 4.019ct Loose Stone

[12/21 22:00] Zambian Bicolor Tourmaline 4.019ct Loose Stone Sale price¥98,000
[12/21 22:00] Zambian Bicolor Tourmaline 6.536ct Loose Stone

[12/21 22:00] Zambian Bicolor Tourmaline 6.536ct Loose Stone Sale price¥128,000
[12/17 22:00] Brazilian Dumortierite in Quartz 2.012ct Loose Stone

[12/17 22:00] Brazilian Dumortierite in Quartz 2.012ct Loose Stone Sale price¥14,800
White topaz 16.06ct loose

White topaz 16.06ct loose Sale price¥25,800
Paraiba tourmaline from Mozambique 0.207ct loose

Paraiba tourmaline from Mozambique 0.207ct loose Sale price¥9,800
ダイヤモンド 0.052ctルース（トラペーズカット,VSクラス相当）

Diamond 0.052ct loose (trapeze cut, VS class equivalent) Sale price¥6,980
ブラジル産パライバトルマリン 0.420ct原石

Brazilian Paraiba tourmaline 0.420ct raw stone (CuO:1.6%, MnO:1.3%) Sale price¥69,800
モザンビーク産パライバトルマリン 0.229ctルース

Paraiba tourmaline from Mozambique 0.229ct loose Sale price¥9,800
[12/9 22:00 Sale] Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho

[12/9 22:00 Sale] Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho Sale price¥69,800
[12/16 22:00] Brazilian Dumortierite in Quartz 10.0mm/5.357ct Loose Stone

[12/16 22:00] Brazilian Dumortierite in Quartz 10.0mm/5.357ct Loose Stone Sale price¥39,800
ブラジル産インディゴライトトルマリン 0.431ctルース

[On Sale 11/30 at 10pm] Brazilian Indigolite Tourmaline 0.431ct Loose Stone with Certificate of Authenticity Sale price¥29,800
Pink tourmaline 0.516ct loose

Pink tourmaline 0.516ct loose Sale price¥5,980
H&C（ハート&キューピッド）専用スコープ（ダイヤモンド 専用スコープ) - カラッツSTORE

[Jeweler's Tools] H&C (Heart & Cupid) Special Scope (Diamond Special Scope) Sale price¥1,580
Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available}

Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available} Sale priceFrom ¥4,980
"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Ginoza Nobuchika Model] "London Blue Topaz"

"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Ginoza Nobuchika Model] "London Blue Topaz" Sale priceFrom ¥25,800
H&C (Heart & Cupid) Diamond 2.0mm Loose (VS Class, DG Class, 2mm Melee Diamonds) {Multiple Purchase Discounts Available}

H&C (Heart & Cupid) Diamond 2.0mm Loose (VS Class, DG Class, 2mm Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥7,980
【一律1000円】アメリカ産・ハーキマーダイヤモンド（ロッククリスタル）1石 原石

[Flat rate 1000 yen] 1 American Herkimer diamond (rock crystal) rough stone (discount available for multiple purchases) Sale price¥1,000
"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Tsunemori Akane Model] (Pink Diamond)

"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Tsunemori Akane Model] (Pink Diamond) Sale priceFrom ¥29,800
Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available]

Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available] Sale priceFrom ¥1,580
Rose cut diamond 1.2mm x 1 stone (VS-SI class, DH color, melee diamonds) {Multiple purchase discounts available}

Rose cut diamond 1.2mm x 1 stone (VS-SI class, DH color, melee diamonds) {Multiple purchase discounts available} Sale price¥2,980
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
H&C (Hearts & Cupids) Diamond 1.2mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available}

H&C (Hearts & Cupids) Diamond 1.2mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥3,980
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
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

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.