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[On sale June 21st at 10 PM] Ruby Gacha (with synthetic ruby as a bonus) including two pigeon blood rubies with appraisal certificates (limited to 15 stones) - Multiple purchase discount available

[On sale June 21st at 10 PM] Ruby Gacha (with synthetic ruby as a bonus) including two pigeon blood rubies with appraisal certificates (limited to 15 stones) - Multiple purchase discount available Sale price¥5,980
Synthetic Alexandrite 0.287ct loose stone

Synthetic Alexandrite 0.287ct loose stone Sale price¥8,800
合成アレキサンドライト 0.471ctルース

Synthetic Alexandrite 0.471ct loose stone Sale price¥14,800
合成モアッサナイト 0.678ctルース

Synthetic Moissanite 5.8mm/0.678ct Loose Stone Sale price¥8,800
合成モアッサナイト 0.634ctルース

Synthetic Moissanite 0.634ct loose stone Sale price¥9,800
合成オパール 1.804ctルース

Synthetic Opal 1.804ct Loose Sale price¥12,800
合成アレキサンドライト 1.381ctルース

[On sale June 12th at 10 PM] Synthetic Alexandrite 1.381ct Loose Stone Sale price¥25,800
合成アレキサンドライト 1.076ctルース

[On sale 6/12 10 PM JST] Synthetic Alexandrite 1.076ct Loose Stone Sale price¥25,800
Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available]

Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available] Sale priceFrom ¥1,580
合成モアッサナイト1石ルース（ミントグリーン,ペアシェイプカット,5×7mm)

Synthetic moissanite 1 stone loose (mint green, pear shape cut, 5 x 7 mm, moissanite)《Multiple purchase discount available》 Sale price¥3,980
Synthetic moissanite 1 stone loose (blue moissanite, 1.2mm)《Multiple purchase discount available》

Synthetic moissanite 1 stone loose (blue moissanite, 1.2mm)《Multiple purchase discount available》 Sale price¥1,000
合成モアッサナイト1石ルース（ミントグリーン,オーバルカット,6×4mm)

Synthetic moissanite 1 stone loose (mint green, oval cut, 6 x 4 mm, moissanite)《Multiple purchase discount available》 Sale price¥3,980
《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
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
Limited Edition Synthetic Moissanite Gacha! 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite Loose Stones Available. Multiple Purchase Discounts Available.

Limited Edition Synthetic Moissanite Gacha! 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite Loose Stones Available. Multiple Purchase Discounts Available. Sale price¥4,980
合成ブラックモアッサナイト（ブラックモアサナイト）1石ルース《バンコク買付品》

Synthetic black moissanite (black moissanite) 1 stone loose (2.5mm, round cut)《Multiple purchase discount available》 Sale price¥2,980
[On Sale 10 PM, June 7] *Limited to 3 Sets* 1.0ct/D/VS-VVS/IDEAL Lab-Grown Diamond (Synthetic Diamond) & 2 Rare Cabochon Stones (Total of 3 Stones Included) *Multiple Purchase Discount Available*

[On Sale 10 PM, June 7] *Limited to 3 Sets* 1.0ct/D/VS-VVS/IDEAL Lab-Grown Diamond (Synthetic Diamond) & 2 Rare Cabochon Stones (Total of 3 Stones Included) *Multiple Purchase Discount Available* Sale price¥49,800
[Limited to 4 stones] Synthetic moissanite 1 stone loose (rose cut, 5.0mm) [Discount available for multiple purchases]

[Limited to 4 stones] Synthetic moissanite 1 stone loose (rose cut, 5.0mm) [Discount available for multiple purchases] Sale price¥6,980
合成モアッサナイト 8.679ctルース

Synthetic Moissanite 8.679ct loose stone Sale price¥29,800
合成アレキサンドライト 0.379ctルース

[On sale May 22nd at 10 PM] Synthetic Alexandrite 4.3mm/0.379ct Loose Stone Sale price¥9,800
合成アレキサンドライト 0.885ctルース

[On Sale May 24, 10 PM JST] Synthetic Alexandrite Loose Stone 0.885ct Sale price¥18,800
合成アレキサンドライト 0.979ctルース

[On sale May 24th, 10 PM JST] Synthetic Alexandrite 5.8mm/0.979ct Loose Stone Sale price¥22,800
合成アレキサンドライト 1.320ctルース

[On sale 5/22 at 10 PM] Synthetic Alexandrite 1.320ct Loose Gemstone Sale price¥19,800
合成アレキサンドライト 1.241ctルース

[On sale May 21st at 10 PM] Synthetic Alexandrite 1.241ct Loose Gemstone Sale price¥25,800
合成アレキサンドライト 0.808ctルース

[On sale 5/21 at 10 PM] Synthetic Alexandrite 0.808ct Loose Stone Sale price¥18,800
合成アレキサンドライト 0.414ctルース

【Sale starts May 17th, 10 PM JST】Synthetic Alexandrite 0.414ct Loose Stone Sale price¥12,800
[Sales Start: May 3rd, 10 PM JST] [Colorflee] Pt900 Lab-Grown Ruby 1.61ct / Diamond 0.25ct Ring (Central Gem Lab Certified)

[Sales Start: May 3rd, 10 PM JST] [Colorflee] Pt900 Lab-Grown Ruby 1.61ct / Diamond 0.25ct Ring (Central Gem Lab Certified) Sale price¥98,000
K18 合成オパール ペンダントトップ（ネックレストップ）鑑別書

[Sale on May 26th at 10 PM] [Colorfri] K18 Synthetic Opal Pendant Top (Necklace Top) with Certificate of Authenticity Sale price¥39,800
【22602569掲載】【カラフリ】Pt900/K18 合成オパール 3.25ct ペンダントトップ（ネックレストップ）

[On Sale 5/5 at 10 PM] [Karafuri] Pt900/K18 Cresanbert/Kyocera Synthetic Opal 3.25ct and Diamond 0.25ct Pendant Top Sale price¥69,800
【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone

【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone Sale price¥39,800
合成モアッサナイト 7.999ctルース

Synthetic Moissanite 7.999ct loose stone Sale price¥29,800
合成モアッサナイト 8.417ctルース

Synthetic Moissanite 8.417ct Loose Stone Sale price¥39,800
合成モアッサナイト 8.931ctルース

Synthetic Moissanite 8.931ct loose stone Sale price¥45,800
合成モアッサナイト 4.924ctルース

Synthetic Moissanite 4.924ct loose stone Sale price¥29,800
Synthetic Alexandrite 4.3mm/0.430ct Loose Stone

Synthetic Alexandrite 4.3mm/0.430ct Loose Stone Sale price¥12,800
Synthetic Blue Sapphire 1.551ct Loose Stone (Synthetic Sapphire)

Synthetic Blue Sapphire 1.551ct Loose Stone (Synthetic Sapphire) Sale price¥15,800
Synthetic Blue Sapphire 2.012ct Loose (Synthetic Sapphire)

Synthetic Blue Sapphire 2.012ct Loose (Synthetic Sapphire) Sale price¥25,800
Synthetic Alexandrite 0.338ct loose stone

Synthetic Alexandrite 0.338ct loose stone Sale price¥12,800
合成モアッサナイト（グレーブルー） 1.701ctルース

Synthetic moissanite (gray blue) 1.701ct loose Sale price¥12,800
Synthetic Opal 0.856ct Loose (Synthetic Water Opal)

Synthetic Opal 0.856ct Loose (Synthetic Water Opal) Sale price¥8,800
1.547ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)

1.547ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire) Sale price¥9,800
Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire)

Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire) Sale price¥14,800
Synthetic Moissanite 0.632ct loose stone (tie cut)

Synthetic Moissanite 0.632ct loose stone (tie cut) Sale price¥3,980
Synthetic Moissanite 0.509ct loose stone (tie cut)

Synthetic Moissanite 0.509ct loose stone (tie cut) Sale price¥3,980
合成アレキサンドライト 0.827ctルース

Synthetic Alexandrite 5.7mm/0.827ct Loose Stone Sale price¥19,800
【サンジェ氏】合成モアッサナイト 0.714ctルース

Synthetic Moissanite 0.714ct loose stone Sale price¥6,980
合成モアッサナイト 0.491ctルース

Synthetic Moissanite 0.491ct loose stone Sale price¥4,980
合成モアッサナイト 0.245ctルース

Synthetic moissanite 0.245ct loose (shield cut) 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.