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[On sale May 1st at 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.167ct Loose Stone

[On sale May 1st at 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.167ct Loose Stone Sale price¥16,800
Bekily Blue Garnet (Color Change Garnet) from Madagascar 0.230ct Loose Gemstone

Bekily Blue Garnet (Color Change Garnet) from Madagascar 0.230ct Loose Gemstone Sale price¥18,800
Madagascar Bekily Blue Garnet (Color Change Garnet) 0.257ct Loose Stone

Madagascar Bekily Blue Garnet (Color Change Garnet) 0.257ct Loose Stone Sale price¥25,800
ブラジル産非加熱インペリアルトパーズ（シェリーカラー） 0.368ctルース

[On sale May 6th, 10 PM JST] Brazilian unheated Imperial Topaz (Sherry Color) 0.368ct loose gemstone Sale price¥25,800
【12562795掲載】ブラジル産非加熱インペリアルトパーズ（シェリーカラー） 0.314ctルース

Unheated Brazilian Imperial Topaz (Sherry Color) 0.314ct Loose Sale price¥22,800
[On Sale 5/2 at 10 PM JST] Mozambique Almandine Garnet 17.770ct Loose Stone

[On Sale 5/2 at 10 PM JST] Mozambique Almandine Garnet 17.770ct Loose Stone Sale price¥98,000
Brazilian Indicolite Tourmaline 0.352ct Loose Stone with Certification

Brazilian Indicolite Tourmaline 0.352ct Loose Stone with Certification Sale price¥29,800
コロンビア産エメラルドキャッツアイ 0.689ctルース

[On Sale May 14th at 10 PM] Colombian Emerald 0.689ct Loose Stone Sale price¥18,800
Ruby 0.528ct Loose Stone with Gem Identification Report

Ruby 0.528ct Loose Stone with Gem Identification Report Sale price¥28,800
Mexican Cantera Opal 5.811 ct Loose Stone with Certificate

Mexican Cantera Opal 5.811 ct Loose Stone with Certificate Sale price¥29,800
【12562861掲載】メキシコ産カンテラオパール 7.520ctルース

Mexican Cantera Opal 7.520 ct Loose Stone with Appraisal Sale price¥24,800
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
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
Pt900 アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.5ct ペンダントトップ（ネックレストップ）

[Sale on May 14 at 10 PM] [Colorful] Pt900 Andesine/Labradorite (commonly known as Rainbow Moonstone) 0.5ct Pendant Top (Necklace Top) with Identification Report Sale price¥18,800
K18WG イエローサファイア 0.05ct ペンダントトップ（ネックレストップ）

[Calafuri] K18WG Yellow Sapphire 0.05ct Pendant Top (Necklace Top) Sale price¥79,800
K18 ファイアオパール リング

[Sales on May 5th at 10 PM] [Karafuri] K18 Fire Opal Ring with Certificate Sale price¥49,800
Pt900 アイスブルーダイヤモンド（トリートメント） 1.00ct リング

[On sale May 6th, 10 PM JST] [Colorfury] Pt900 Ice Blue Diamond (Treated) 1.00ct Ring Sale price¥298,000
Pt900 合成ルビー 1.61ct リング

[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
Pt900 オパール 2.61ct・ダイヤモンド0.858ctリング

[On Sale May 6, 10 PM JST] [Colorfley] Pt900 Opal 2.61ct / Diamond 0.858ct Ring Sale price¥168,000
【32501891掲載】ダイヤモンド 0.207ctルース(F, VS-1, Excellent)

[On sale May 3rd, 10 PM JST] Loose Diamond 3.8mm/0.207ct (F, VS-1, Excellent) Sale price¥35,800
ダイヤモンド 0.216ctルース(G, VS-1, Excellent)

[On Sale May 14th, 10 PM] Diamond 3.8mm/0.216ct Loose (G, VS-1, Excellent) Sale price¥49,800
ダイヤモンド 0.211ctルース(E, VS-2, Excellent)

[On sale May 27th at 10 PM] Diamond 3.8mm/0.211ct Loose (E, VS-2, Excellent) Sale price¥49,800
【32501896掲載】ダイヤモンド 0.167ctルース(D, VVS-2, VeryGood)

[Sale on May 3rd, 10 PM JST] Diamond 3.5mm/0.167ct Loose Stone (D, VVS-2, VeryGood) Sale price¥37,800
ダイヤモンド 0.197ctルース(E, VVS-1, VeryGood)

[On sale 5/27 10 PM] Diamond 3.8mm/0.197ct Loose (E, VVS-1, VeryGood) Sale price¥39,800
【32501899掲載】ダイヤモンド 0.167ctルース(G, VS-1, VeryGood)

[On sale May 3 at 10 PM] Diamond 3.5mm/0.167ct Loose Stone (G, VS-1, Very Good) Sale price¥29,800
【12562847掲載】カンテラオパール 17.284ctルース

Mexican Cantera Opal 17.284ct Loose Sale price¥39,800
【22602562掲載】K18 アメジスト リング

[On sale May 2nd at 10 PM] K18 Amethyst Chain Ring Sale price¥18,800
【22602566掲載】K18 ペリドット リング

[On sale May 2nd at 10 PM JST] K18 Peridot Chain Ring Sale price¥22,800
【22602568掲載】K18 アクアマリン リング

[On sale May 2nd at 10 PM JST] K18 Aquamarine Chain Ring Sale price¥24,800
Colombian emerald 0.443ct rough stone

Colombian emerald 0.443ct rough stone Sale price¥8,800
Colombian emerald 0.499ct rough stone

Colombian emerald 0.499ct rough stone Sale price¥14,800
バイカラータンザナイト 5.582ct原石

Bicolor Tanzanite 5.582ct rough stone Sale price¥18,800
バイカラータンザナイト 1.677ct原石

Bicolor Tanzanite 1.677ct rough stone Sale price¥7,980
Colombian Trapiche Emerald 0.422ct Loose

Colombian Trapiche Emerald 0.422ct Loose Sale price¥18,800
[On Sale May 2 at 10 PM] Ruby 0.286ct Loose Gemstone with Identification Report

[On Sale May 2 at 10 PM] Ruby 0.286ct Loose Gemstone with Identification Report Sale price¥22,800
【12562741掲載】オーストラリア産ボルダーオパール 8.029ctルース

【Sale from 10 PM on May 3】Australian Boulder Opal 8.020ct Loose Gemstone with Certificate Sale price¥69,800
[On sale 5/4 at 10 PM] Colombian bicolor emerald 0.274ct loose stone

[On sale 5/4 at 10 PM] Colombian bicolor emerald 0.274ct loose stone Sale price¥98,000
K18 スフェーン 0.7ct リング

[Sale from 10 PM on 5/5] [Colorful] K18 Sphene 0.7ct and Diamond 0.03ct Ring with Certification Sale price¥79,800
ブラジル産スカイブルートパーズ 0.802ctルース

[On sale May 9 at 10 PM JST] Brazilian Sky Blue Topaz 0.802ct Loose Stone Sale price¥9,800
K18WG ダイヤモンド 0.21ct ペンダント（ネックレス）

[Sale from 10 PM on May 17th] [Colorful] K18WG Diamond 0.21ct Pendant Top (Necklace) Sale price¥49,800
K18 ダイヤモンド 0.3ct ペンダント（ネックレス）

[On sale May 23 at 10 PM] [Colorfully] K18 Diamond 0.3ct Pendant Top (Necklace Top) Sale price¥39,800
K18WG ダイヤモンド 0.126ct ペンダント（ネックレス）

[On sale 5/23 at 10 PM] [Colorful] K18WG Diamond 0.126ct Pendant (Necklace) Sale price¥49,800
ブラジル産パライバトルマリン 0.170ctルース

[Sale on 5/23 at 10 PM JST] Brazilian Paraiba Tourmaline 0.170ct Loose Stone (CuO: 2.1%, MnO: 1.1%) Sale price¥258,000
スカイブルートパーズ 0.756ctルース

【Available 5/9 at 10 PM JST】Brazilian Sky Blue Topaz 0.756ct Loose Gemstone Sale price¥8,800
奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 2.678ctルース

[Sale on May 26th at 10 PM] Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 7.4mm/2.678ct Loose Stone Sale price¥15,800
タンザニア産タンザナイト 0.406ctルース

[On sale May 10th at 10 PM] Tanzanian Tanzanite 0.406ct Loose Stone Sale price¥12,800
オーストラリア産オパール（母岩付） 14.840ctルース 鑑別書

[On Sale May 9th at 10 PM JST] Australian Opal with Matrix, 14.840ct, Loose Stone, Gemstone Report Sale price¥69,800
ブラジル産トリカラートルマリン 32.207ctルース (パーティカラートルマリン）

[On sale May 10th at 10 PM] Brazilian Tricolor Tourmaline 32.207ct Loose Stone (Parti-color Tourmaline) Sale price¥398,000

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.