Today's new arrivals

[On sale from 22:00 on 5/5] Pt950 Brazilian Swiss Blue Topaz 0.756ct Aquamarine Ring Sale price¥79,800

Pt950 Tanzanian Tanzanite 1.357ct Blue Zircon Pink Sapphire Ring Sale price¥128,000

Pt950 Myanmar spinel 0.18ct 0.22ct earrings Sale price¥59,800

Pt950 Brazilian Paraiba Tourmaline 0.201ct Pendant (Necklace) Sale price¥128,000

Pt900 Russian Demantoid Garnet (Horsetail certified) 4.3mm/0.33ct, Diamond 0.48ct Ring Sale price¥158,000

Pt900 Russian Demantoid Garnet (Horsetail) 0.30ct and Diamond 0.30ct Ring Sale price¥128,000

K18YG マダガスカル産スフェーン 0.597ct ペンダントトップ（ネックレストップ）

[E33 Shinjuku] 18K Yellow Gold Madagascar Sphene 0.597ct Pendant (Necklace) Sale price¥39,800

K18 Indian Iolite Sunstone 0.73ct Tanzanite Ring Sale price¥188,000

[E33 Shinjuku] 18K Yellow Gold Tanzanian Kornerupine 0.217ct Aquamarine Ring Sale price¥89,800

K18YG American Turquoise 1.04ct Ring (Cat Cut) Sale price¥79,800

K18YG American Benitoite 0.17ct Brazilian Paraiba Tourmaline Ring Sale price¥128,000

K18YG Brazilian Paraiba Tourmaline 0.30ct Diamond Ring GIA Sale price¥198,000

[E33 Shinjuku] 18K Yellow Gold Brazilian Santa Maria Aquamarine 0.284ct Pendant (Necklace) Sale price¥49,800

【22602505掲載】K18YG ブラジル産アレキサンドライト 0.087ct ピンキーリング

18K Yellow Gold Brazilian Alexandrite 0.087ct Pinky Ring Sale price¥79,800

K18YG Pink Diamond 0.068ct Ring (FANCY LIGHT PINK, SI-2) Sale price¥128,000

K18YG Myanmar Ruby, Padparadscha Color Sapphire, Yellow Diamond Pendant (Necklace) Sale price¥98,000

K18YG rose cut diamond 0.171ct ring Sale price¥89,800

K18YG アメリカ産オレゴンサンストーン 0.44ct・ピンクダイヤモンド・オレンジスピネルリング

[E33 Shinjuku] 18K Yellow Gold Ring with 0.44ct Oregon Sunstone from the United States, Pink Diamond, and Orange Spinel Sale price¥158,000

[E33 Shinjuku] 18K Gold with 0.49ct Brazilian Paraiba Tourmaline Ring, GIA Sale price¥198,000

[E33 Shinjuku] K18PG Pink Sapphire 0.32ct Brown Diamond Ring Sale price¥69,800

K18PGマダガスカル産ピンクサファイア0.24ct0.25ctピアス（アッシャーカット）

K18PG Madagascar pink sapphire 0.24ct 0.25ct earrings (Asscher cut) Sale price¥59,800

K18PGカナリーイエローダイヤモンド（トリートメント）0.214ct・アレキサンドライトリング中宝付

[E33 Shinjuku] 18K Gold, 0.214ct Canary Yellow Diamond (Treatment) (SI-1, Fancy Intense Greenish Yellow) and Alexandrite Ring Sale price¥128,000

K18/Pt950 カンボジア産ブルージルコン0.48ct・パライバトルマリンリング

K18/Pt950 Cambodian Blue Zircon 0.48ct Paraiba Tourmaline Ring Sale price¥89,800

ブラジル産非加熱ピンクインペリアルトパーズ（シェリーピンク） 0.240ctルース

[E33 Shinjuku] <High Ink> Brazilian Unheated Pink Imperial Topaz (Sherry Pink) 0.240ct Loose Sale price¥14,800

【甲州貴石切子plusthree】スカイブルートパーズ 6mm/0.988ctルースワッペン付

[Koshu Precious Stones Plusthree] Sky Blue Topaz 6mm/0.988ct Loose Stone with Patch Sale price¥25,800

【甲州貴石切子】《月型切子》スイスブルートパーズ 27.829ct《コラボ》ルースワッペン付

[Koshu Precious Stone Kiriko]《Moon-shaped Kiriko》Swiss Blue Topaz 27.829ct《Collaboration》Loose with emblem Sale price¥59,800

[Koshu Precious Stone Kiriko]《Moon-shaped Kiriko》Citrine 6.097ct《Collaboration》With loose patch Sale price¥69,800

[Confetti Cut] Color Shift Amethyst 3.499ct Loose Stone Sale price¥22,800

【スターインカット】メキシコ産ファイアオパール 7mm/0.678ctルースワッペン付

[Star in cut] Mexican fire opal 7mm/0.678ct loose patch Sale price¥49,800

【さくらシェイプ】カンボジア産ブルージルコン 8mm/2.909ct《コラボ》ルースワッペン

[Sakura Shape] Cambodian Blue Zircon 8mm/2.909ct {Collaboration} Loose Patch Sale price¥59,800

【さくらシェイプ】アメリカ産オレゴンサンストーン 7.3mm/1.361ct《コラボ》ルースワッペン

Lottery Sale ⑤ [Lottery Sale 0928] [Published on 12555057] [Sakura Shape] Oregon Sunstone from the United States 7.3mm/1.361ct Loose Stone Sale price¥69,800

【さくらインカット】非加熱ピンクサファイア 2.442ctルース《コラボ》日独鑑 - カラッツSTORE

[Sakura in-cut] Unheated pink sapphire 2.442ct loose "Collaboration" Japanese-German edition Sale price¥188,000

[Sakura in-cut] Lavender quartz (scorolite) 8mm/ 2.161ct loose Sale price¥19,800

イエローベリル 2.227ctルース【さくらインカット】ブラジル産イエローベリル 9.1mm/2.227ctルース

[7/4 22:00 Sale] [Sakura Incut] Brazilian Yellow Beryl 9.1mm/2.227ct Loose Sale price¥29,800

【クローバーインカット】メキシコ産オパール 7mmルースワッペン付 - カラッツSTORE

[Clover in cut] Mexican opal 7mm/0,648ct {Collaboration} Loose patch Sale price¥45,800

[Camellia cut] Mexican fire opal 1.270ct loose with patch Sale price¥98,000

【カメリアカット】オレゴンサンストーン 2.102ct《コラボ》ルース　ワッペン

[Camellia Cut] Oregon Sunstone 14mm/2.102ct {Collaboration} Loose Patch Sale price¥79,800

coming soon

【32501458掲載】レッドダイヤモンド（トリートメント） 0.065ctルース(FANCY PURPLISH RED, VS2)

[Posted 32501458] Red Diamond (Treatment) 0.065ct Loose (FANCY PURPLISH RED, VS2) Sale price¥55,800

coming soon

[12550983] Madagascar Pezzottaite 0.670ct loose stone Sale price¥188,000

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.