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¥5,000 - ¥10,000

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バイカラーゾイサイト 0.273ctルース

Bicolor Zoisite 0.273ct loose stone Sale price¥7,980
タンザナイト 0.328ctルース

Tanzanite 0.328ct loose stone Sale price¥8,800
バイカラーゾイサイト 0.229ctルース

Bicolor Zoisite 0.229ct loose stone Sale price¥6,980
バイカラーゾイサイト 0.392ctルース

Bicolor Zoisite 0.392ct loose stone Sale price¥7,980
Green tourmaline 0.090ct loose stone

Green tourmaline 0.090ct loose stone Sale price¥5,980
バイカラートルマリン 0.548ctルース

Bicolor tourmaline 0.548ct loose Sale price¥6,980
レピドクロサイトインクォーツ 0.768ctルース

Lepidocrocite in Quartz 0.768ct Loose Sale price¥7,980
レピドクロサイトインクォーツ 0.241ctルース

Lepidocrocite in Quartz 0.241ct Loose Stone Sale price¥6,980
レピドクロサイトインクォーツ 0.382ctルース

Lepidocrocite in Quartz 0.382ct Loose Sale price¥6,980
モスアゲート 0.795ctルース

Moss agate 0.795ct loose stone Sale price¥6,980
モスアゲート 0.720ctルース

Moss agate 0.720ct loose stone Sale price¥6,980
グリーントルマリン 0.637ctルース

Green tourmaline 0.637ct loose Sale price¥8,800
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） 0.581ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.581ct loose stone Sale price¥6,980
ブラジル産メデューサクォーツ（パライバクォーツ） 1.529ctルース

Brazilian Medusa Quartz (Paraiba Quartz) 1.529ct Loose Stone Sale price¥6,980
ブラジル産メデューサクォーツ（パライバクォーツ） 1.241ctルース

Brazilian Medusa Quartz (Paraiba Quartz) 1.241ct Loose Stone Sale price¥6,980
ブラジル産メデューサクォーツ（パライバクォーツ） 1.405ctルース

Brazilian Medusa Quartz (Paraiba Quartz) 1.405ct Loose Stone Sale price¥8,800
[Sale starts April 8 at 10 PM JST] Australian Black Opal 0.232ct Loose Stone

[Sale starts April 8 at 10 PM JST] Australian Black Opal 0.232ct Loose Stone Sale price¥9,800
【12562558掲載】オーストラリア産ブラックオパール 0.251ctルース

[On Sale April 8, 10 PM JST] Australian Black Opal 0.251ct Loose Stone Sale price¥9,800
ザンビア産カナリーイエロートルマリン 0.158ctルース

【On sale March 13th at 10 PM】Zambian Canary Yellow Tourmaline 0.158ct Loose Gemstone 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
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

[Option] Certificate issuance fee Sale priceFrom ¥2,750
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
[Jeweler's Tools] White penlight (for loose), loose 3-piece set

[Jeweler's Tools] White penlight (for loose), loose 3-piece set Sale price¥5,980
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
[Available at 10 PM on January 24th] Limited to 7 sets: Gemstone Encyclopedia Playing Cards + 4 Gemstones in a Gemstone Lucky Bag (Valued at 10,000 yen)

[Available at 10 PM on January 24th] Limited to 7 sets: Gemstone Encyclopedia Playing Cards + 4 Gemstones in a Gemstone Lucky Bag (Valued at 10,000 yen) Sale price¥6,000
Top Quality: Brazilian Alexandrite 1 Stone Loose (2.0mm, Hematita Mine) Multiple Purchase Discounts Available

Top Quality: Brazilian Alexandrite 1 Stone Loose (2.0mm, Hematita Mine) Multiple Purchase Discounts Available Sale price¥9,800
クッションカットのブラジル産インペリアルトパーズ1石ルース（3mm）《複数購入割引有》

Cushion cut Brazilian imperial topaz 1 stone loose (3mm)《Multiple purchase discount available》 Sale price¥5,980
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
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
コロンビア産エメラルド ルース・原石2石セット（ラウンドカット3mm）

Colombian emerald loose rough stone set of 2 stones (round cut 3mm)《Multiple purchase discount available》 Sale price¥6,980
Limited quantity: Sri Lankan 2mm sapphire (sapphire) 1 loose stone (with identification certificate for all stones) Discounts for multiple purchases

Limited quantity: Sri Lankan 2mm sapphire (sapphire) 1 loose stone (with identification certificate for all stones) Discounts for multiple purchases Sale price¥5,980
[On sale March 6th at 10 PM JST] Limited to 13 stones! A Synthetic Gacha featuring a D/IF/3EX lab-grown diamond, usually ¥39,800, and a Sakura Cut YAG, usually ¥59,800 (plus a synthetic alexandrite). Multiple purchase discounts available.

[On sale March 6th at 10 PM JST] Limited to 13 stones! A Synthetic Gacha featuring a D/IF/3EX lab-grown diamond, usually ¥39,800, and a Sakura Cut YAG, usually ¥59,800 (plus a synthetic alexandrite). Multiple purchase discounts available. Sale price¥6,980
Limited Quantity: Russian Phenakite (Round Cut, 3mm) Loose Stone (Multiple Purchase Discounts Available)

Limited Quantity: Russian Phenakite (Round Cut, 3mm) Loose Stone (Multiple Purchase Discounts Available) Sale price¥5,980
《17色》宝石ガチャガチャ💎新作モアッサナイト6.5mm（H&C ハート＆キューピッド）💎《複数購入割引有》 - カラッツSTORE

《17 colors》Gem Gacha💎Synthetic Moissanite 1 stone loose (H&C Heart & Cupid, 6.5mm)💎《Multiple purchase discount available》 Sale price¥5,980
[On sale from 10 PM on March 19th] TV anime "2.5-Dimensional Temptation" x Jewelry Specialty Store KARATZ collaboration tapestry

[On sale from 10 PM on March 19th] TV anime "2.5-Dimensional Temptation" x Jewelry Specialty Store KARATZ collaboration tapestry Sale price¥9,900
タンザナイト原石・ルース2石セット（シュガーローフカット）

Tanzanite raw stone/loose 2 stone set (sugar loaf cut)《Multiple purchase discount available》 Sale price¥6,980
Limited to 20 stones: Brazilian Paraiba tourmaline (cabochon cut, approximately 2.2 mm) [Multiple purchase discounts available]

Limited to 20 stones: Brazilian Paraiba tourmaline (cabochon cut, approximately 2.2 mm) [Multiple purchase discounts available] Sale price¥9,800
Limited to 25 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.0 mm) Multiple purchase discounts available

Limited to 25 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.0 mm) Multiple purchase discounts available Sale price¥5,980
Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》

Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》 Sale price¥5,980
Special Campaign! Limited Stock! December Birthstone Tanzanite Loose Stone (5x7mm, Oval Cut) - Multiple Purchase Discounts Available

Special Campaign! Limited Stock! December Birthstone Tanzanite Loose Stone (5x7mm, Oval Cut) - Multiple Purchase Discounts Available Sale price¥8,800
Limited to 9 stones. All stones come with appraisal certificates. 1 loose zoisite stone (yellow, pink-brown, green, etc.). Discounts available for multiple purchases.

Limited to 9 stones. All stones come with appraisal certificates. 1 loose zoisite stone (yellow, pink-brown, green, etc.). Discounts available for multiple purchases. Sale price¥6,980
Limited to 15 stones: Brazilian Silky Alexandrite Loose Stone (2.5-3.0mm, Round Cut) - Multiple Purchase Discounts Available

Limited to 15 stones: Brazilian Silky Alexandrite Loose Stone (2.5-3.0mm, Round Cut) - Multiple Purchase Discounts Available Sale price¥7,980
[Jeweler's Tools] Limited Edition Chelsea Color Filter Emerald 2-Piece Set

[Jeweler's Tools] Limited Edition Chelsea Color Filter Emerald 2-Piece Set Sale price¥6,980
[Available at 10 PM on February 22nd] Limited to 10 Opals - Australian Opal Lottery with Certificate of Authenticity (including Australian Black Opal) (Plus 1 Mexican Fire Opal) [Multiple Purchase Discounts Available]

[Available at 10 PM on February 22nd] Limited to 10 Opals - Australian Opal Lottery with Certificate of Authenticity (including Australian Black Opal) (Plus 1 Mexican Fire Opal) [Multiple Purchase Discounts Available] Sale price¥6,980
Limited Edition of 12 Diamonds: VS Equivalent Fluorescent Diamond Gacha with Bonus Mini Slice Diamond (Multiple Purchase Discounts Available)

Limited Edition of 12 Diamonds: VS Equivalent Fluorescent Diamond Gacha with Bonus Mini Slice Diamond (Multiple Purchase Discounts Available) Sale price¥6,980
Limited to 32 stones: Namibian Mandarin Garnet, 1 loose stone (round cut, 2.5mm) [Multiple purchase discounts available]

Limited to 32 stones: Namibian Mandarin Garnet, 1 loose stone (round cut, 2.5mm) [Multiple purchase discounts available] Sale price¥5,980
Limited to 8 stones: 1 loose synthetic alexandrite (custom cut by Mr. Sanjay, shield cut, octagonal cut, etc.) Discounts available for multiple purchases

Limited to 8 stones: 1 loose synthetic alexandrite (custom cut by Mr. Sanjay, shield cut, octagonal cut, etc.) Discounts available for multiple purchases Sale price¥6,980

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.