Specially selected items

Adult Sebonstar Jewelry Vol. 3: Adult Sebonstar Pendant Mirage Edition <silver model></silver>

Adult Sebonstar Jewelry Vol. 3: Adult Sebonstar Pendant Mirage Edition Sale priceFrom ¥29,800

[On sale Wed, 9/30 at 6 PM] "Overlord" Anime x KARATZ Jewelry Specialty Store Collaboration: Ring of Ainz Ooal Gown (Limited Quantity) Sale priceFrom ¥110,000

Brazilian Paraiba Tourmaline Ring and Half Eternity Ring Set (1.2mm) Sale price¥198,000

Cambodian Blue Zircon (Ratanakiri Blue) 23.105ct Loose Gemstone with Certificate Sale price¥498,000

Natural Emerald from Brazil, 15.219 ct, Loose Stone, Nichidoku Identification Report Sale price¥398,000

[Wed, 9/30 6:00 PM Release] Anime "Overlord" x Jewelry Specialty Store KARATZ Collaboration: Shalltear [Spuit Lance] Objet <<limited quantity>></limited>

[Wed, 9/30 6:00 PM Release] Anime "Overlord" x Jewelry Specialty Store KARATZ Collaboration: Shalltear [Spuit Lance] Objet <> Sale price¥220,000

[Lottery Sale #2_202608_13] Brazilian Tetracholor Tourmaline 11.847ct Loose Stone with Certificate Sale price¥258,000

[Deadline: Wed, Sept 22 at 10 AM: Lottery Sale_09] Parasitic Peridot 0.536ct Loose Stone, NGL Certified Sale price¥228,000

Brazilian bicolor tourmaline cat's eye 22.056ct loose stone Sale price¥188,000

Myanmar Podretteite 0.834ct loose stone Sale price¥298,000

【10/28 22時販売】【カラフリ】Pt900 ブルージルコン（ラタナキリブルー） 7.7ct ダイヤモンド0.27ctリング鑑別書 Sale price¥188,000

[Available 10/30 (Fri) at 10:00 PM] Sakura Wars × KARATZ Collaboration: 30th Anniversary Sakura Shinguji "Spirit Sword: Arataka" Sale price¥1,280,000

[Deadline: Sat, Sep 5, 10:00 AM: Lottery Sale_09] Sri Lankan Unheated Color-Change Sapphire 1.170ct Loose Stone, GIA certified Sale price¥188,000

ブルーダイヤモンド 0.064ctルース(FANCY LIGHT GREEN BLUE, VS-1)

[9/14 (Mon) 10:00 AM Deadline: Lottery Sale_05] Blue Diamond 0.064ct Loose Stone (FANCY LIGHT GREEN BLUE, VS-1) Sale price¥298,000

K18WG マルチカラーサファイア0.83ct・ダイヤモンド0.70ct 3WAYクロスペンダント（ネックレス）鑑別書

[Available 9/25, 10 PM] [Color-free] K18WG Multicolor Sapphire 0.83ct / Diamond 0.70ct 3-Way Cross Pendant (Necklace) with Appraisal Report Sale price¥198,000

Pt900 エメラルド 5.33ct サファイア4.52ct、ダイヤモンド0.12ctリング宝貴協

[On sale 9/24 at 22:00] [Colorfully] Pt900 Emerald 5.33ct, Sapphire 4.52ct, Diamond 0.12ct Ring (JGA Certified) Sale price¥198,000

Russian demantoid garnet (horsetail recognized) 5.5mm/0.710ct loose Sale price¥188,000

[202608GIA Appraisal Request] [Sale on June 5th at 10 PM] Russian Demantoid Garnet (with horsetail inclusion) 5.8mm/0.876ct Loose Stone with Appraisal Report Sale price¥258,000

【202608GIA Appraisal Request】【On Sale June 5th, 10 PM】Russian Demantoid Garnet (with horsetail inclusion) 6.8mm/1.366ct Loose Stone with Appraisal Report Sale price¥458,000

Russian Demantoid Garnet (Horsetail Recognized) 5.1mm/0.664ct Loose Stone Sale price¥228,000

[202608GIA Appraisal Request] Russian Demantoid Garnet (horsetail inclusion confirmed) 5.2mm/0.661ct Loose Stone Sale price¥248,000

【Lottery Sale ②_202608_12】Brazilian Bi-Color Pink Euclase 3.210ct Loose Stone with Japan-Germany Gemological Report Sale price¥798,000

[Lottery Sale 0620_03] South African Rhodochrosite 2.694ct Loose Stone Sale price¥228,000

Brazilian Particolor Paraiba Tourmaline 0.490ct Loose (Bicolor Paraiba Tourmaline) GIA Sale price¥398,000

[Lottery Sale 0731_06] Colombian Pyrite in Emerald 2.988 ct Loose Stone with Japanese and German Gemological Certificates Sale price¥228,000

[Lottery Sale 0731_10] Colombian Muzo Non-Oil Emerald 0.370ct Loose GIA Sale price¥298,000

K18WG アレキサンドライト 0.64ct ダイヤモンド0.04ctペンダントトップ（ネックレストップ）鑑別書

[Published in 22602715] [Colorful] K18WG Alexandrite 0.64ct Diamond 0.04ct Pendant Top (Necklace Top) with Identification Report Sale price¥228,000

Royal blue sapphire 1.220ct loose stone Sale price¥258,000

[Lottery Sale ②_202608_08] Unheated Color Change Sapphire from Sri Lanka 1.140ct Loose Stone GIA Sale price¥258,000

【#202607 Akihabara Pop-up, Currently Out of Office】【12563057 Listed】Sri Lankan Royal Blue Sapphire 1.060ct Loose Stone Sale price¥188,000

[Published 22602679] [Calafuri] Pt900 Thai Ruby 1ct Ring Sale price¥298,000

[Lottery Sale 1_202608_04] Pt900 Benitoite (USA) 0.152ct / Diamond 0.58ct Ring Sale price¥188,000

K18WG パライバトルマリン 0.09ct・ダイヤモンド0.06ctリング（CuO:1.0%、MnO:0.4%）ソーティング（一般社団法人宝石貴金属協会）

[22602666 listed] [Colorful] K18WG Paraiba Tourmaline 0.09ct Ring Sale price¥198,000

[Published 22602698] [Karafuri] K18 Ruby 6.74ct Ring Diamond 0.91ct with identification report Sale price¥228,000

[Lottery Sale 0707_06] Kunzite from Afghanistan, 69.722ct Loose Stone Sale price¥258,000

【Lottery Sale 0731_08】Brazilian Emerald Cat's Eye 6.083ct Loose Gemstone with Japanese and German Gemological Report Sale price¥258,000

[Lottery Sale 0731_09] Burmese Ruby 1.020ct Loose Stone GIA Sale price¥188,000

【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate Sale price¥198,000

【#202607 Akihabara Pop-up Store - Currently at Offsite Location】【Shinjuku Marui Annex 202605 Offsite Location】Lottery Sale 11【For Winners Only】【Published on 12559975】Colombian Non-Oil Emerald 1.760ct Loose GIA Sale price¥1,580,000

Pt900 ビルマ産ルビー 1.07ct・ダイヤモンド0.32ctリング GIA

[22602674 Listed] [Karafuri] Pt900 Burma Ruby 1.07ct Ring Sale price¥258,000

[On Sale August 6, 10 PM] [Colori] K18 Blue Sapphire 1.13ct / Diamond 0.75ct Ring with Appraisal Report Sale price¥188,000

Pt900 インペリアルトパーズ 3.88ct・ダイヤモンド0.26ct リング鑑別書

【Karahuri】Pt900 Imperial Topaz 3.88ct / Diamond 0.26ct Ring with Certificate Sale price¥258,000

[Karafuru] Pt900 Ruby 0.69ct, Diamond 0.16ct Ring with Appraisal Report Sale price¥188,000

Pt950/K18 パライバトルマリン 0.11ct（CuO:2.7%,MnO:3.4%）・ダイヤモンド1.12ctリング　宝貴協

[On sale August 2 at 10 PM] [ColorFuli] Pt950/K18 Paraiba Tourmaline 0.11ct (CuO:2.7%, MnO:3.4%) and Diamond 1.12ct Ring - Houki-kyo Sale price¥188,000

Pt900 ブルーサファイア 2.67ct・ダイヤモンド0.75ctペンダントトップ（ネックレストップ）鑑別書

[Item 22602648] [Colorflee] Pt900 Blue Sapphire 2.67ct Pendant Top (Necklace Top) Sale price¥228,000

Pt900 ダイヤモンド原石 2.733ct・ダイヤモンド0.68ctリング鑑別書

[Calafuri] Pt900 Rough Diamond 2.733ct, Diamond 0.68ct Ring with Certificate Sale price¥198,000

Brazilian Paraiba Tourmaline 0.360ct Loose GIA Sale price¥298,000

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.