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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 Limited to 10 stones! Pigeon Blood Ruby (normally priced at 39,800 yen) Red Gemstone Gacha with AIGS Certificate (Multiple purchase discounts available)

Limited to 10 stones! Pigeon Blood Ruby (normally priced at 39,800 yen) Red Gemstone Gacha with AIGS Certificate (Multiple purchase discounts available)

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 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 [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 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 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 Single loose Russian oil-free emerald (1.6-1.7mm, princess cut) {Multiple purchase discounts available}

Single loose Russian oil-free emerald (1.6-1.7mm, princess cut) {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 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
Sold out Limited to 13 stones! Bicolor Gacha 💎 Bicolor Sphene, usually priced at ¥79,800, Party-color Paraiba Tourmaline, usually priced at ¥39,800, and more. (Multiple Purchase Discount Available)

Limited to 13 stones! Bicolor Gacha 💎 Bicolor Sphene, usually priced at ¥79,800, Party-color Paraiba Tourmaline, usually priced at ¥39,800, and more. (Multiple Purchase Discount Available)
Sold out Color Change Gacha💎 Russian alexandrite, Brazilian alexandrite, and Tanzanian color-change garnets, usually priced at ¥39,800. 《Discounts for multiple purchases available》

Color Change Gacha💎 Russian alexandrite, Brazilian alexandrite, and Tanzanian color-change garnets, usually priced at ¥39,800. 《Discounts for multiple purchases available》
Sold out Blue Stone Gacha💎 (Brazilian Paraiba Tourmaline, Mozambique Paraiba Tourmaline, German Auchenite, Benitoite) {Multiple Purchase Discounts Available}

Blue Stone Gacha💎 (Brazilian Paraiba Tourmaline, Mozambique Paraiba Tourmaline, German Auchenite, Benitoite) {Multiple Purchase Discounts Available}
Sold out Limited to 8 stones: 1 loose Brazilian ametrine (concave cut, average 10 carats) Multiple purchase discounts available

Limited to 8 stones: 1 loose Brazilian ametrine (concave cut, average 10 carats) Multiple purchase discounts available
Sold out Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.

Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.
Sold out Limited Edition of 11 Rare Stones! 💎 Two 0.23ct Paraiba Tourmalines from Batalha, Brazil, a Pink Diamond, and a Benitoite Loose Stone. Discounts available for multiple purchases.

Limited Edition of 11 Rare Stones! 💎 Two 0.23ct Paraiba Tourmalines from Batalha, Brazil, a Pink Diamond, and a Benitoite Loose Stone. Discounts available for multiple purchases.
Sold out 《再販売》ハイヒール（ロッククリスタル）1石《宝石ハイヒール1個 - カラッツSTORE

High heels (rock crystal) 1 stone (gem high heels)《Discount available for multiple purchases》
Sold out Tanzanian Bicolor Grossular Garnet (1 loose stone, average 0.55 carats) (Multiple purchase discounts available)

Tanzanian Bicolor Grossular Garnet (1 loose stone, average 0.55 carats) (Multiple purchase discounts available)

Sold out Gemstone Gacha💎 1 of the Three Great Gemstones Gacha + 2 Loose Pink Sapphires (Multiple Purchase Discounts Available)

Gemstone Gacha💎 1 of the Three Great Gemstones Gacha + 2 Loose Pink Sapphires (Multiple Purchase Discounts Available)
Sold out Limited to 8 stones: 1 Australian rainbow lattice sunstone loose stone (average 0.60ct) Multiple purchase discounts available

Limited to 8 stones: 1 Australian rainbow lattice sunstone loose stone (average 0.60ct) Multiple purchase discounts available
Sold out Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available)

Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available)
Sold out Oregon Sunstone from America with beautiful Schiller (Oval Cut, 5×7mm) {Multiple purchase discounts available}

Oregon Sunstone from America with beautiful Schiller (Oval Cut, 5×7mm) {Multiple purchase discounts available}
Sold out Gem Gacha💎1 special fluorescent diamond (VS-SI class equivalent, 2.0mm)

Gem Gacha💎1 special fluorescent diamond (VS-SI class equivalent, 2.0mm)

Sold out Morganite raw stone + 2 loose pieces (orange/pink, approx. 6 x 4 mm) 3-piece set《Multiple purchase discount available》

Morganite raw stone + 2 loose pieces (orange/pink, approx. 6 x 4 mm) 3-piece set《Multiple purchase discount available》

Sold out Guatemalan Jade (with certificate, 3-3.5mm) - 1 Stone Loose - Limited to 10 Stones - Multiple Purchase Discount Available

Guatemalan Jade (with certificate, 3-3.5mm) - 1 Stone Loose - Limited to 10 Stones - Multiple Purchase Discount Available
Sold out Midway coral branch (raw wood) 1 piece (March birthstone, coral, average 26ct, Midway coral) 《Multiple purchase discount available》

Midway coral branch (raw wood) 1 piece (March birthstone, coral, average 26ct, Midway coral) 《Multiple purchase discount available》
Sold out [Limited to 6 Stones] Vietnamese Silky Pink Sapphire (Sanje Cut, Round, 3.0-3.3mm) Gacha [Bulk Purchase Discount Available]

[Limited to 6 Stones] Vietnamese Silky Pink Sapphire (Sanje Cut, Round, 3.0-3.3mm) Gacha [Bulk Purchase Discount Available]

Sold out Panda Cut Gacha💎 Brazilian Paraiba Tourmaline (0.226ct/CuO: 0.7%, MnO: 2.5%) - 1 Stone, 5 Panda Cut Stones (Multiple Purchase Discounts Available)

Panda Cut Gacha💎 Brazilian Paraiba Tourmaline (0.226ct/CuO: 0.7%, MnO: 2.5%) - 1 Stone, 5 Panda Cut Stones (Multiple Purchase Discounts Available)
Sold out Greenland Ruby Loose (approx. 2.3mm, Top Color, Certificate Included) (Multiple Purchase Discounts Available)

Greenland Ruby Loose (approx. 2.3mm, Top Color, Certificate Included) (Multiple Purchase Discounts Available)

Sold out Limited to 9 stones: One loose Brazilian rainbow aquamarine (average 1.0 carat, pear cut) [Multiple purchase discounts available]

Limited to 9 stones: One loose Brazilian rainbow aquamarine (average 1.0 carat, pear cut) [Multiple purchase discounts available]
Sold out Limited to 6 stones: 1 loose sphene from Zimbabwe (multiple purchase discounts available)

Limited to 6 stones: 1 loose sphene from Zimbabwe (multiple purchase discounts available)
Sold out Limited to 8 stones: 1 Sri Lankan star sapphire loose stone (5mm, round cabochon cut) Multiple purchase discounts available

Limited to 8 stones: 1 Sri Lankan star sapphire loose stone (5mm, round cabochon cut) Multiple purchase discounts available
Sold out Limited to 7 stones! May birthstone special offer! Colombian emerald cat's eye, 1 loose stone (highly transparent cat's eye) Multiple purchase discounts available

Limited to 7 stones! May birthstone special offer! Colombian emerald cat's eye, 1 loose stone (highly transparent cat's eye) Multiple purchase discounts available

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.