Over ¥100,000

[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

【Lottery Sale 0428_2_05】American Neptunite 0.859ct Loose Gemstone with Certificate Sale price¥128,000

Pt900 カンボジア産ラタナキリブルージルコン 2.22ct・ダイヤモンド0.38ctリング中宝ソ

[Lottery Sale 0725_14] Pt900 Cambodian Blue Zircon (Ratanakiri Blue) 2.22ct Ring with GIA Report Sale price¥158,000

[#202607AkihabaraPopUpTakeOut][12563062Published] Padparadscha Sapphire 0.690ct Loose Stone Sale price¥158,000

【#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

[Lottery Sale 0629_08] Colombian Non-Oil Emerald 4.1mm/0.240ct Loose GIA Sale price¥458,000

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

[Lottery Sale 0521_08] Madagascar Sapphire 1.650ct Loose GIA Sale price¥158,000

[On sale from 12:00 PM on Thursday, July 30] Adult Sebonstar 4th Edition "Swan Tiara Pendant" Precious Model Pt950 Sale price¥198,000

[Listed as 12562727] Pink Imperial Topaz 1.907ct Loose Stone Sale price¥118,000

[Posted as 12562691] Malawi Bicolor Zircon 2.082ct Loose Sale price¥128,000

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

[Sales start July 29, 10 PM JST] [COLORFUL] Pt900 Imperial Topaz 3.88ct / Diamond 0.26ct Ring with Appraisal Report Sale price¥258,000

【Sales start July 29, 10 PM】[Colorfle] Pt900 Ruby 0.69ct, Diamond 0.16ct Ring with appraisal report Sale price¥188,000

Pt900 ブラックダイヤモンド 1.00ct・ダイヤモンド0.50ctリング鑑別書

[Lottery Sale 12][For Winners Only][Posted on 22602618] Pt900 Black Diamond 1.00ct / Diamond 0.50ct Ring Sale price¥158,000

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

1石から選ぶオーダーメイド《リング》申し込みページ～ Solo(ソロ) ～ - カラッツSTORE

Solo "Simple Order Ring Setting" Sale priceFrom ¥79,800

Andromeda "Semi-custom pendant frame and chain integrated" Sale price¥105,800

2石から選ぶオーダーメイド《リング》申し込みページ～ Duo(デュオ) ～ - カラッツSTORE

Duo (Simple Order Ring Frame) Sale price¥105,800

[Sales end on Thursday, Aug 20] [Only 2 remaining] Anime "Assassination Classroom" x KARATZ Collaboration Koro Sensei Five Great Gems Figure [Limited 100 pieces] Sale price¥110,000

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

[On Sale May 5th at 10 PM] Cambodian Blue Zircon (Ratanakiri Blue) 23.105ct Loose Stone with Appraisal Sale price¥498,000

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

13-stone diamond half eternity ring set (VS class, D-G color, H&C, 2.0mm) Sale price¥158,000

Ainsel "Semi-custom ring setting" Sale price¥178,000

[12558084 posted] Benitoite 0.190ct Loose, with identification report, Made in America Benitoite 0.158ct Loose, with identification report Benitoite 0.190ct Loose, with identification report Sale price¥118,000

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

[Lottery Sale_0612_09] Yellow Sapphire 2.150ct Loose Gemstone GIT Sale price¥158,000

[Lottery Sale 0428_2_07] Watermelon Tourmaline 14.780ct Loose Stone Sale price¥128,000

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

[On sale July 13th, 10 PM JST] [COLORFULI] Pt900 Rough Diamond 2.733ct / Diamond 0.68ct Ring with Appraisal Card Sale price¥198,000

Pomme Blanche "Semi-custom ring setting" Sale priceFrom ¥105,800

K18WG ルビー 0.94ct・ダイヤモンド0.66ctペンダントトップ（ネックレストップ）　鑑別書

[Published on 22602611] [Carafur] K18WG Ruby 0.94ct Pendant Top (Necklace Top) Sale price¥158,000

インターナリーフローレスダイヤモンド（H&C） 5.1mm/0.527ctルース(E, IF, 3Excellent H&C)

[Lottery Sale 0530_06] Internally Flawless Diamond (H&C) 0.527ct Loose Stone (E, IF, 3Excellent H&C) Sale price¥228,000

インターナリーフローレスダイヤモンド 0.272ctルース(D, IF, 3Excellent H&C)

[Lottery Sale 0530_03] Internally Flawless Diamond 4.2mm/0.272ct Loose (D, IF, 3Excellent H&C) GIA Sale price¥138,000

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

[On sale June 27th at 10 PM] [Colorflee] K18 Blue Sapphire 1.89ct / Diamond 0.74ct Ring with Appraisal Report Sale price¥298,000

K18 白蝶真珠（白蝶パール）鳥モチーフペンダントトップ（ネックレストップ）鑑別書

[Sale on 6/22 at 10 PM] Colorful K18 White South Sea Pearl, 0.17ct Diamond, Ruby, Sapphire, Emerald Bird Motif Pendant Top (Necklace Top) with Appraisal Report Sale price¥198,000

モザンビーク産パライバトルマリン 0.784ctルース（CuO:0.3%,MnO:1.3%）

[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone Sale price¥128,000

[On sale June 27, 10 PM] Colorful K18 Blue Sapphire and Diamond Ring with Certificate Sale price¥128,000

Brazilian Paraiba Tourmaline 0.341ct loose stone (CuO:1.81%, MnO:1.96%) Nakahokan analysis report Sale price¥598,000

Royal Blue Sapphire 0.730ct Loose AIGS Sale price¥158,000

[Available June 18th at 10 PM] [Colorful] K18WG Diamond 1.03ct Pendant Top Sale price¥128,000

[12552306] Iolite 14.158ct loose stone Sale price¥258,000

Pt900 ブルーサファイア 2.38ct・ダイヤモンド0.20ctリング鑑別書

[On sale 6/25 10 PM] [COLORFUL] Pt900 Blue Sapphire 2.38ct and Diamond 0.20ct Ring with Appraisal Report Sale price¥198,000

0.210ct Colombian Non-Oil Emerald Loose Stone GIA Sale price¥228,000

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.