Login

All

Sort by
Sold out Let's try the gem mining experience "Do-it-yourself gem excavation experience set" + bonus of fossil stickers and simple black light (more than 8 types of gems) (discounts available for multiple purchases)

Let's try the gem mining experience "Do-it-yourself gem excavation experience set" + bonus of fossil stickers and simple black light (more than 8 types of gems) (discounts available for multiple purchases)

Sold out 【猫カット】アメジスト（8mm） - カラッツSTORE

[Cat cut] Amethyst (8mm)

Sold out 含浸ルビー・天然ルビー見分け2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] 2-piece set for distinguishing impregnated rubies and natural rubies (discount available for multiple purchases)

Sold out Limited to 20 stones! Includes 6 red gemstones of pigeon blood ruby ​​with AGL certificate. Discounts available for multiple purchases.

Limited to 20 stones! Includes 6 red gemstones of pigeon blood ruby ​​with AGL certificate. Discounts available for multiple purchases.
Sold out Limited Quantity: 2mm Benitoite (Top Quality Ice Blue) (Multiple Purchase Discounts Available)

Limited Quantity: 2mm Benitoite (Top Quality Ice Blue) (Multiple Purchase Discounts Available)

Sold out 1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》

1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》
Sold out **Sales End: Monday, August 31st** - Anime *Moriarty the Patriot* x KARATZ Jewelry Store Collaboration Glitter Can Badges

**Sales End: Monday, August 31st** - Anime *Moriarty the Patriot* x KARATZ Jewelry Store Collaboration Glitter Can Badges

Sold out Limited to 20 stones: 1 loose sphalerite stone from Spain. Discounts available for multiple purchases.

Limited to 20 stones: 1 loose sphalerite stone from Spain. Discounts available for multiple purchases.

Sold out [Sales End on Sunday, February 15th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration CCG Quinque Pendant

[Sales End on Sunday, February 15th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration CCG Quinque Pendant

Sold out [Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges

[Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges

Sold out Limited to 22 Sapphire Gacha (Includes Sakura In-Cut & Sakura Shape Sapphire, Bonus Hot Pink Sapphire) (Multiple Purchase Discounts Available)

Limited to 22 Sapphire Gacha (Includes Sakura In-Cut & Sakura Shape Sapphire, Bonus Hot Pink Sapphire) (Multiple Purchase Discounts Available)

Sold out 《Officially Licensed Product》Limited Quantity & Limited Time 30% Off (35,800 JPY → 25,060 JPY) Yokohama DeNA BayStars Home Blue Ring - Double Type | SV925 / Sea Blue Chalcedony / White Chalcedony

《Officially Licensed Product》Limited Quantity & Limited Time 30% Off (35,800 JPY → 25,060 JPY) Yokohama DeNA BayStars Home Blue Ring - Double Type | SV925 / Sea Blue Chalcedony / White Chalcedony

Sold out Limited time sale: Tibetan Andesine 1 stone (3mm, round cut) Multiple purchase discounts available

Limited time sale: Tibetan Andesine 1 stone (3mm, round cut) Multiple purchase discounts available
Sold out Malachite 2 stone set loose (6mm, cushion cut)《Discount available for multiple purchases》

Malachite 2 stone set loose (6mm, cushion cut)《Discount available for multiple purchases》

Sold out 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》

Sold out ブルーベリル（マシシベリル）＆ミントグリーンベリル2石セット

[Resale] Blue Beryl (Mashishi Beryl) & Mint Green Beryl 2 stone set《Multiple purchase discount available》

Sold out 1 green opal from Amazon《Discount available for multiple purchases》

1 green opal from Amazon《Discount available for multiple purchases》

Sold out Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available"

Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available"

Sold out [Jeweler's Tools] 3-piece set: Jewelry Loupe (14x magnification), Blue Diamond, and Pink Tourmaline or Sapphire

[Jeweler's Tools] 3-piece set: Jewelry Loupe (14x magnification), Blue Diamond, and Pink Tourmaline or Sapphire
Sold out Limited to 17 stones, 1 loose Sugilite stone from South Africa, multiple purchase discounts available

Limited to 17 stones, 1 loose Sugilite stone from South Africa, multiple purchase discounts available
Sold out Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for advanced users: rough spinel from Mozambique)

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for advanced users: rough spinel from Mozambique)

Sold out 《Limited to 18 Stones》Brazilian Paraiba Tourmaline Gacha with Sorting (CuO: 2.1%, MnO: 2.2%) Normally 45,800 JPY《Multiple Purchase Discount Available》

《Limited to 18 Stones》Brazilian Paraiba Tourmaline Gacha with Sorting (CuO: 2.1%, MnO: 2.2%) Normally 45,800 JPY《Multiple Purchase Discount Available》
Sold out [Sales end 7/31] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Vol. 4: Bungo Ring [Takiji Kobayashi Model Ring] - Limited Time Purchase Bonus Included

[Sales end 7/31] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Vol. 4: Bungo Ring [Takiji Kobayashi Model Ring] - Limited Time Purchase Bonus Included

Sold out Limited to 20 Pieces: Spanish Sphalerite Loose Stone (Average 0.50ct) - Volume Discount Available

Limited to 20 Pieces: Spanish Sphalerite Loose Stone (Average 0.50ct) - Volume Discount Available
Sold out Limited to 100 coins: "PSYCHO-PASS: PROVIDENCE" x KARATZ collaboration pure silver (SV999) coin

Limited to 100 coins: "PSYCHO-PASS: PROVIDENCE" x KARATZ collaboration pure silver (SV999) coin

Sold out 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}
Sold out アメジスト・シトリン 4mm（エピコットカット） 2石セット

Amethyst/Citrine 4mm (Epicot cut) 2 stone set《Multiple purchase discount available》

Sold out Synthetic alexandrite 1 stone (round, mele size)《Discount available for multiple purchases》

Synthetic alexandrite 1 stone (round, mele size)《Discount available for multiple purchases》

Sold out Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts available for multiple purchases.

Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts available for multiple purchases.
Sold out Limited to 19 stones: Blue sapphire from Madagascar (medium blue, oval cut) Discounts available for multiple purchases

Limited to 19 stones: Blue sapphire from Madagascar (medium blue, oval cut) Discounts available for multiple purchases
Sold out Christmas Sale: S: 3 pieces / M: 1 piece / Kids: 1 piece - Yuichiro Abe Goods Set [T-shirt & Coaster]

Christmas Sale: S: 3 pieces / M: 1 piece / Kids: 1 piece - Yuichiro Abe Goods Set [T-shirt & Coaster]

Sold out 【宝石商の道具】冷却ヒビ入れ染色クォーツ・天然エメラルド見分け2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] Cooling Cracked Dyed Quartz/Natural Emerald Identification 2-piece Set (Discount available for multiple purchases)

Sold out 《Limited to 15 Stones》Ruby Gacha with 2 Pigeon Blood Rubies with Certificates (Synthetic Ruby as a Bonus)《Multiple Purchase Discount Available》

《Limited to 15 Stones》Ruby Gacha with 2 Pigeon Blood Rubies with Certificates (Synthetic Ruby as a Bonus)《Multiple Purchase Discount Available》
Sold out "Limited to 25 Sets" Kochi Prefecture Red Coral Branch (Raw Coral) & 2 Stone Loose Coral Set (March Birthstone, Coral) "Multiple Purchase Discount Available"

"Limited to 25 Sets" Kochi Prefecture Red Coral Branch (Raw Coral) & 2 Stone Loose Coral Set (March Birthstone, Coral) "Multiple Purchase Discount Available"
Sold out Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)

Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)
Sold out 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)
Sold out SoftBank Hawks 20th Anniversary "Pure Gold Oban" (10g)

SoftBank Hawks 20th Anniversary "Pure Gold Oban" (10g)

Sold out 18K Yellow Gold Curb Chain Necklace, 1.0mm/1.6g, 40cm

18K Yellow Gold Curb Chain Necklace, 1.0mm/1.6g, 40cm
Sold out TV anime "The Story of Going to a Mixer and Not Having a Girlfriend" x KARATZ collaboration pair image rings Suou x Tokiwa image

TV anime "The Story of Going to a Mixer and Not Having a Girlfriend" x KARATZ collaboration pair image rings Suou x Tokiwa image

Sold out [Sakura Shape Jewelry] Hanayurara (Vatican Necklace)

[Sakura Shape Jewelry] Hanayurara (Vatican Necklace)

Sold out Gem gacha cut by Shimizu Kiseki and Yoichi Fukazawa 💎 {Multiple purchase discounts available} {Halloween specials included}

Gem gacha cut by Shimizu Kiseki and Yoichi Fukazawa 💎 {Multiple purchase discounts available} {Halloween specials included}

Sold out Brazilian Paraiba Tourmaline (1.0mm, top quality)《Multiple purchase discount available》

Brazilian Paraiba Tourmaline (1.0mm, top quality)《Multiple purchase discount available》

Sold out ライモナイトインクォーツ（オーロラクォーツ） 1石 ルース

Lymonite in Quartz (Aurora Quartz) 1 stone loose

Sold out プリンセスカットダイヤモンド 2.0mm ルース（VSクラス相当）

Princess cut diamond 2.0mm loose (equivalent to VS class)《Multiple purchase discount available》

Sold out 1 Ethiopian Opal (Baroque)《Discount available for multiple purchases》

1 Ethiopian Opal (Baroque)《Discount available for multiple purchases》

Sold out 《Limited to 14 stones》Windsor Sapphire Gacha 1 stone (bicolor, silky, color change, average 0.30ct) 《Multiple purchase discount available》

《Limited to 14 stones》Windsor Sapphire Gacha 1 stone (bicolor, silky, color change, average 0.30ct) 《Multiple purchase discount available》
Sold out 《Limited to 15 Stones》Diamond Gacha where you can win a D/VS-1/3.4mm or I/VS-1/3.7mm diamond with a GIA Japan sorting report, normally priced at 29,800 yen 💎《Multiple Purchase Discount Available》

《Limited to 15 Stones》Diamond Gacha where you can win a D/VS-1/3.4mm or I/VS-1/3.7mm diamond with a GIA Japan sorting report, normally priced at 29,800 yen 💎《Multiple Purchase Discount Available》

Sold out Limited to 18 items: Deep-sea Coral Branch (raw wood), 1 stone (March birthstone, coral, average 18ct) (bulk purchase discount available)

Limited to 18 items: Deep-sea Coral Branch (raw wood), 1 stone (March birthstone, coral, average 18ct) (bulk purchase discount 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.