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Sold out 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》

Sold out グリーンランド産ルビー 1石（ラウンドカット,2mm）

1 Ruby from Greenland (round cut, 2mm) with certificate

Sold out [On sale August 15th at 10 PM] Paraiba Gacha where you can win a Brazilian Paraiba Tourmaline (CuO: 1.4%, MnO: 2.7%) normally priced at 39,800 yen, limited to 10 stones. (Multiple purchase discount available)

[On sale August 15th at 10 PM] Paraiba Gacha where you can win a Brazilian Paraiba Tourmaline (CuO: 1.4%, MnO: 2.7%) normally priced at 39,800 yen, limited to 10 stones. (Multiple purchase discount available)
Sold out [On sale August 1 at 10 PM] Limited 10 Stones: Sapphire Gacha (including unheated cornflower blue sapphires, normally ¥69,800), with a bonus Sange sapphire. Multiple purchase discount available.

[On sale August 1 at 10 PM] Limited 10 Stones: Sapphire Gacha (including unheated cornflower blue sapphires, normally ¥69,800), with a bonus Sange sapphire. Multiple purchase discount available.
Sold out Bicolor Gacha including Brazilian parti-colored Paraiba tourmaline (CuO: 1.7%, MnO: 2.9%), bicolor sapphire, bicolor tourmaline, and specially cut bicolor fluorite, normally 79,800 JPY (multiple purchase discount available)

Bicolor Gacha including Brazilian parti-colored Paraiba tourmaline (CuO: 1.7%, MnO: 2.9%), bicolor sapphire, bicolor tourmaline, and specially cut bicolor fluorite, normally 79,800 JPY (multiple purchase discount available)
Sold out Pink Diamond Gacha💎 (Includes two Fancy Intense 0.063ct diamonds with a medium-sized gemstone, normally priced at ¥98,000, and two Fancy Purplish Pink 1.7mm 0.021ct diamonds) {Multiple purchase discounts available}

Pink Diamond Gacha💎 (Includes two Fancy Intense 0.063ct diamonds with a medium-sized gemstone, normally priced at ¥98,000, and two Fancy Purplish Pink 1.7mm 0.021ct diamonds) {Multiple purchase discounts available}
Sold out Rainbow Garnet Rough Stone + 2 Loose Stones Set from Tenkawa Village, Nara Prefecture (Multiple Purchase Discounts Available)

Rainbow Garnet Rough Stone + 2 Loose Stones Set from Tenkawa Village, Nara Prefecture (Multiple Purchase Discounts Available)
Sold out Blue Sapphire Gacha Set Includes Two Unheated Royal Blue Sapphires (with AIGS Certificate) (Plus One Sapphire from the Teppanawa Mine) (Multiple Purchase Discounts Available)

Blue Sapphire Gacha Set Includes Two Unheated Royal Blue Sapphires (with AIGS Certificate) (Plus One Sapphire from the Teppanawa Mine) (Multiple Purchase Discounts Available)
Sold out 《Limited to 11 Stones》Russian Demantoid Garnet (2-2.3mm, round cut, with horsetail) 1 stone《Multiple Purchase Discount Available》

《Limited to 11 Stones》Russian Demantoid Garnet (2-2.3mm, round cut, with horsetail) 1 stone《Multiple Purchase Discount Available》
Sold out Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》

Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》

Sold out 《再販売》ハイヒール（カーネリアン）1石《宝石ハイヒール》 - カラッツSTORE

High heels (carnelian) 1 stone (gem high heels)《Multiple purchase discount available》

Sold out [6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》

[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》
Sold out 《Limited to 11 stones》Pink Sapphire Gacha including a "Sakura Cut" sapphire, normally 79,800 yen (plus one white sapphire) 《Multiple purchase discount available》

《Limited to 11 stones》Pink Sapphire Gacha including a "Sakura Cut" sapphire, normally 79,800 yen (plus one white sapphire) 《Multiple purchase discount available》
Sold out 《Purchased in Hong Kong》Afghan Green Hauyne 1 Piece Loose Stone with Full Stone Identification Report《Multiple Purchase Discount Available》

《Purchased in Hong Kong》Afghan Green Hauyne 1 Piece Loose Stone with Full Stone Identification Report《Multiple Purchase Discount Available》

Sold out [Sales End on Tuesday, June 30] TV Anime "Dr.STONE" × KARATZ Jewelry Store Collaboration Acrylic Keychain

[Sales End on Tuesday, June 30] TV Anime "Dr.STONE" × KARATZ Jewelry Store Collaboration Acrylic Keychain

Sold out [Sales end Tuesday, May 5] TV Anime "2.5 Dimensional Seduction" x Jewelry Store KARATZ Collaboration Tapestry

[Sales end Tuesday, May 5] TV Anime "2.5 Dimensional Seduction" x Jewelry Store KARATZ Collaboration Tapestry

Sold out 《Limited to 15 Stones》Kornerupine Gacha💎Win a 0.413ct Kornerupine (Prismatine) from Tanzania with a Japanese and German Gemstone Report (Plus a Free Kornerupine from Ken's Collection)《Bulk Purchase Discount Available》

《Limited to 15 Stones》Kornerupine Gacha💎Win a 0.413ct Kornerupine (Prismatine) from Tanzania with a Japanese and German Gemstone Report (Plus a Free Kornerupine from Ken's Collection)《Bulk Purchase Discount Available》
Sold out Limited to 7 stones: 1 loose Indian iolite sunstone (custom cut by Sanjay) Multiple purchase discounts available

Limited to 7 stones: 1 loose Indian iolite sunstone (custom cut by Sanjay) Multiple purchase discounts available
Sold out Takeshi Yamamoto's work Gacha (Fire Flower Cut, etc., Bonus: Yamamoto-polished Planite) 1 loose stone 💎 {Multiple purchase discounts available}

Takeshi Yamamoto's work Gacha (Fire Flower Cut, etc., Bonus: Yamamoto-polished Planite) 1 loose stone 💎 {Multiple purchase discounts available}
Sold out Limited to 10 stones: Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) [Multiple purchase discounts available]

Limited to 10 stones: Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) [Multiple purchase discounts available]
Sold out Brazilian Rainbow Aquamarine (Iridescent Aquamarine) Loose Stone (Heart Shape) (Multiple Purchase Discounts Available)

Brazilian Rainbow Aquamarine (Iridescent Aquamarine) Loose Stone (Heart Shape) (Multiple Purchase Discounts Available)
Sold out Limited to 18 stones, Russian Phenakite rough, average 2.7ct, 1 stone, multiple purchase discounts available

Limited to 18 stones, Russian Phenakite rough, average 2.7ct, 1 stone, multiple purchase discounts available
Sold out 《再販売》ハイヒール（スモーキークォーツ）1石《宝石ハイヒール》》6個 - カラッツSTORE

High heels (smoky quartz) 1 stone (gem high heels)《Multiple purchase discount available》

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

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

Sold out 【8/23 22時販売】《限定12石》通常55,800円のパパラチアサファイア中宝鑑付含むベトナム産やビビッドなモザンビーク産などサファイアガチャ（さらにサンジェ氏サファイア1石）《複数購入割引有》

【8/23 22時販売】《限定12石》通常55,800円のパパラチアサファイア中宝鑑付含むベトナム産やビビッドなモザンビーク産などサファイアガチャ（さらにサンジェ氏サファイア1石）《複数購入割引有》
Sold out [Sales begin August 16, 10 PM] Limited to 11 Stones: Alexandrite Gacha with Russian Alexandrite and Brazilian Silky Color (usually ¥69,800), includes 1 bonus Alexandrite. [Multiple purchase discount available]

[Sales begin August 16, 10 PM] Limited to 11 Stones: Alexandrite Gacha with Russian Alexandrite and Brazilian Silky Color (usually ¥69,800), includes 1 bonus Alexandrite. [Multiple purchase discount available]
Sold out [On Sale April 18th, 10 PM JST] [Limited 9 Stones] Tosa Blood Coral Branch (Raw Coral) 1 Stone (March Birthstone, Coral, Average 7ct) [Bulk Purchase Discount Available]

[On Sale April 18th, 10 PM JST] [Limited 9 Stones] Tosa Blood Coral Branch (Raw Coral) 1 Stone (March Birthstone, Coral, Average 7ct) [Bulk Purchase Discount Available]
Sold out Limited to 9 stones: Padparadscha Sapphire Gacha (plus a princess-cut sapphire) (Multiple purchase discounts available)

Limited to 9 stones: Padparadscha Sapphire Gacha (plus a princess-cut sapphire) (Multiple purchase discounts available)
Sold out Limited Edition of 10 Blue Gemstones! 💎 0.142ct Brazilian Paraiba Tourmaline, Euclase from Zimbabwe, 1.17ct Cobalt Spinel (Certificate of Authenticity: Color Shift), Benitoite, and More! Discounts Available for Multiple Purchases!

Limited Edition of 10 Blue Gemstones! 💎 0.142ct Brazilian Paraiba Tourmaline, Euclase from Zimbabwe, 1.17ct Cobalt Spinel (Certificate of Authenticity: Color Shift), Benitoite, and More! Discounts Available for Multiple Purchases!
Sold out Limited to 10 stones: Tanzanite rough stone gacha including bicolor pink tanzanite rough stones (average 4.2 carats) [Multiple purchase discounts available]

Limited to 10 stones: Tanzanite rough stone gacha including bicolor pink tanzanite rough stones (average 4.2 carats) [Multiple purchase discounts available]
Sold out Limited to 7 stones: One loose, oil-free Russian emerald (1.5-1.6mm, step cut) [Multiple purchase discounts available]

Limited to 7 stones: One loose, oil-free Russian emerald (1.5-1.6mm, step cut) [Multiple purchase discounts available]

Sold out Limited to 10 stones: Blue Spinel Gacha, Cobalt Spinel (including color-shifting type), 2 stones with Japanese and German appraisal certificates, and a bonus synthetic cobalt spinel. Discounts available for multiple purchases.

Limited to 10 stones: Blue Spinel Gacha, Cobalt Spinel (including color-shifting type), 2 stones with Japanese and German appraisal certificates, and a bonus synthetic cobalt spinel. Discounts available for multiple purchases.
Sold out Limited to 9 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.5mm) Multiple purchase discounts available

Limited to 9 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.5mm) Multiple purchase discounts available
Sold out [Jeweler's Tools] Limited Edition Chelsea Color Filter Emerald 2-Piece Set

[Jeweler's Tools] Limited Edition Chelsea Color Filter Emerald 2-Piece Set
Sold out Limited to 10 stones Mexican Cantera Opal 1 loose stone (10 x 8 cm) Multiple purchase discounts available

Limited to 10 stones Mexican Cantera Opal 1 loose stone (10 x 8 cm) Multiple purchase discounts available
Sold out Lab-grown pink diamond (2mm, synthetic pink diamond, about Fancy Vivid Pink) 1 stone loose (multiple purchase discount available)

Lab-grown pink diamond (2mm, synthetic pink diamond, about Fancy Vivid Pink) 1 stone loose (multiple purchase discount available)
Sold out 1 rose cut diamond (VS-SI class equivalent, 3.0mm)《Multiple purchase discount available》

1 rose cut diamond (VS-SI class equivalent, 3.0mm)《Multiple purchase discount available》

Sold out 【猫カット】ローズクォーツ（8mm） - カラッツSTORE

[Cat cut] Rose quartz (8mm)《Multiple purchase discount available》

Sold out 【猫カット】シトリン（8mm） - カラッツSTORE

[Cat cut] Citrine (8mm)

Sold out [Sales start 10 PM, Aug. 10] Andesine-Labradorite Gacha with a Chance to Win a Dandelion Cut Worth 69,800 JPY (Limited to 12 Stones) (Plus 1 Andesine-Labradorite Stone) [Bulk Purchase Discount Available]

[Sales start 10 PM, Aug. 10] Andesine-Labradorite Gacha with a Chance to Win a Dandelion Cut Worth 69,800 JPY (Limited to 12 Stones) (Plus 1 Andesine-Labradorite Stone) [Bulk Purchase Discount Available]
Sold out [On sale August 2nd at 10 PM JST] Limited to 15 stones: Peridot Gacha (August birthstone gacha) including a certificated parasitic peridot, normally ¥79,800. 1 stone with a free princess-cut peridot. Multiple purchase discount available.

[On sale August 2nd at 10 PM JST] Limited to 15 stones: Peridot Gacha (August birthstone gacha) including a certificated parasitic peridot, normally ¥79,800. 1 stone with a free princess-cut peridot. Multiple purchase discount available.
Sold out [Limited to 6 stones] Rainbow Aquamarine 1 stone loose (avg. 0.7ct) [Multi-purchase discount available]

[Limited to 6 stones] Rainbow Aquamarine 1 stone loose (avg. 0.7ct) [Multi-purchase discount available]
Sold out 6-Piece Limited Edition Malawi Moonstone (Malawi-sourced moonstone, average 1.5ct) (Multi-item discount available)

6-Piece Limited Edition Malawi Moonstone (Malawi-sourced moonstone, average 1.5ct) (Multi-item discount available)
Sold out 《Limited to 10 Stones》Win a Koshu cut "Checker x Comet" Mexican fire opal, normally priced at 79,800 yen! 💎Fire Opal Gacha (Plus, get one extra "Contraluz" stone!) 《Bulk purchase discount available》

《Limited to 10 Stones》Win a Koshu cut "Checker x Comet" Mexican fire opal, normally priced at 79,800 yen! 💎Fire Opal Gacha (Plus, get one extra "Contraluz" stone!) 《Bulk purchase discount available》
Sold out Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]

Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]
Sold out Limited to 8 stones - New in Tucson - Canadian Eudialite (Round Cut, Approx. 2mm) - Multiple purchase discounts available

Limited to 8 stones - New in Tucson - Canadian Eudialite (Round Cut, Approx. 2mm) - Multiple purchase discounts available
coming soon 【9/21 22時販売】ザンビア産エメラルド 0.199ctルース

【9/21 22時販売】ザンビア産エメラルド 0.199ctルース Sale price¥9,800
coming soon 【9/21 22時販売】マダガスカル産アイオライト 0.870ctルース

【9/21 22時販売】マダガスカル産アイオライト 0.870ctルース Sale price¥9,800

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.