¥50,000 - ¥100,000

coming soon

【9/5 22時販売】K18WG オーロラ天女・アコヤ真珠（アコヤパール）ダイヤモンドブローチ真科研鑑 Sale price¥98,000

Brazilian Indigolite Tourmaline 1.514ct Loose Stone, Japan-Germany Exchange Sale price¥55,800

[22602719 Posted] [Calafuri] Pt900/Pt850 Pink Tourmaline 1.10ct Diamond 0.02ct Pendant (Necklace) with Certificate Sale price¥98,000

【8/31 22時販売】【カラフリ】Pt900 カラーチェンジサファイア0.446ct ダイヤモンド0.12ctリング鑑別書 Sale price¥89,800

【8/30 22時販売】ダイヤモンド 4.4mm/0.309ctルース(D, VVS-1, 3Excellent) Sale price¥79,800

[Camellia cut] Mexican fire opal 1.270ct loose with patch Sale price¥69,800

【#202607 Akihabara Pop-up Store - Currently Removed from Stock】【Listed on 12563192】Unheated Ruby 0.210ct Loose Stone Sale price¥62,800

【#202607 Akihabara Pop-up Store - Currently Removed】【Listed as 12563268】Rough Diamond (Sawable) from South Africa 0.271ct Sale price¥88,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.284ctルース

【#202607 Akihabara Pop-up, Currently Out of Stock】【12563254 Listed】Madagascar Bekily Blue Garnet (Color Change Garnet) 0.284ct Loose Sale price¥59,800

[#202607 Akihabara Pop-up Store - Currently Removed from Stock] [12554030 Listed] Alexandrite Cat's Eye 1.655ct Loose Stone Sale price¥98,000

[Listing 12563862] Australian Black Opal 1.392ct Loose Sale price¥69,800

【9/2 22時販売】マダガスカル産パパラチアサファイア 0.497ctルース DGL鑑 Sale price¥69,800

【9/2 22時販売】ピジョンブラッドルビー 0.325ctルース JTL鑑別書 Sale price¥69,800

【9/3 22時販売】スリランカ産パープルサファイア 0.556ctルース鑑別書 Sale price¥55,800

Purple zoisite from Tanzania 1.103ct loose Japanese German edition Sale price¥98,000

【Lottery Sale ②_202608_15】Tanzanian Chrome Tourmaline 2.271ct Loose Stone Sale price¥98,000

Pt900 ロンドンブルーダイヤモンド 0.13ct・ダイヤモンド0.40ctリング鑑別書

[Published in 22602703] [Kalafull] Pt900 Ice Blue Diamond (Treated) 0.13ct Ring Sale price¥98,000

Pt900ブラジル産シーフォームトルマリン 4mm/0.32ct ・ダイヤモンド0.16ctペンダントトップ（ネックレストップ）鑑別書

[Lottery Sale 0812_04] Pt900 Brazilian Seafoam Tourmaline 4mm/0.32ct and Diamond 0.16ct Pendant Top (Necklace Top) with Identification Report Sale price¥79,800

Pt900 モザンビーク産ルビー 4mm/0.3ct ・ダイヤモンド0.16ctペンダントトップ（ネックレストップ）鑑別書

[Lottery Sale 0812_05] Pt900 Mozambique Ruby 4mm/0.3ct and Diamond 0.16ct Pendant Top (Necklace Top) with Identification Report Sale price¥59,800

[On sale August 27th at 10 PM JST] Russian Demantoid Garnet (Horsetail inclusion visible) 3.8mm/0.280ct Loose Sale price¥59,800

[On sale August 27, 10 PM JST] Brazilian blue tourmaline, 1.566 ct, loose, with appraisal Sale price¥69,800

[Listing 12563877] Afghan Green Hauyne 0.269ct Loose Sale price¥98,000

[Posted on 12563864] Australian Black Opal 1.797ct Loose Stone Sale price¥69,800

[Listed as 12563918] Sri Lankan Purple Sapphire 0.730ct Loose Stone Sale price¥55,800

[Posted 12563878] Green Hauyne from Afghanistan, 0.222 ct Loose Stone Sale price¥79,800

Pt900/K18 ルビー 0.28ct・ダイヤモンド0.20ct リング鑑別書

【#202607 Akihabara Pop-up Store - Currently Displayed Off-site】【On Sale June 22nd at 10 PM】【Colorfully】Pt900/K18 Ruby 0.28ct, Diamond 0.20ct Ring with Appraisal Sale price¥98,000

[Item ID: 22602669] [Karafuri] Pt900 Ruby 0.58ct Ring Sale price¥98,000

Lottery Sale ⑧ [For Winners Only] [Listed as 12563226] Kochi Prefecture Boke Coral (Sango) 7.900ct Loose Stone Sale price¥59,800

[Item 12564087] Kochi Prefecture Boke Coral (Sango) 15.237ct Loose Stone Sale price¥69,800

カメレオンダイヤモンド 0.212ctルース(LIGHT BROWNISH GREENISH YELLOW（カメレオン）, SI-1)

[Published on 32501973] Chameleon Diamond 0.212ct Loose (LIGHT BROWNISH GREENISH YELLOW (Chameleon), SI-1) Sale price¥64,800

イエローダイヤモンド 0.144ctルース(FANCY VIVID YELLOW, SI-2)

Yellow Diamond 0.144ct Loose (FANCY VIVID YELLOW, SI-2) [Listed as 32501969] Sale price¥55,800

[Listed as 12564020] Hackmanite 0.300ct Loose Stone Sale price¥59,800

イエローダイヤモンド 0.245ctルース(FANCY INTENSE ORANGY YELLOW, SI1)

【#202607AkihabaraPop-upOutOfStock】【Shinjuku Marui Annex 202605 OutOfStock】【#202604KobeOutOfStock】【#202509ShinjukuMarui OutOfStock】Yellow Diamond 0.245ct Loose (FANCY INTENSE ORANGY YELLOW, SI1) Sale price¥55,800

[Lottery Sale 0628_08] Unheated Kashmir Sapphire 0.160ct Loose GIA Sale price¥98,000

ダイヤモンド 4.45mm/0.324ctルース(D, VVS1, 3Excellent) GIA&中宝

[Lottery Sale 1_202608_11] Diamond 4.45mm/0.324ct Loose (D, VVS1, 3Excellent) GIA & CBT Sale price¥98,000

ダイヤモンド 4.42mm/0.330ctルース(E, VS1, 3Excellent) GIA

【Lottery Sale ①_202608_10】Diamond 4.42mm/0.330ct Loose (E, VS1, 3Excellent) GIA Sale price¥98,000

インターナリーフローレスダイヤモンド（H&C） 3.9mm/0.215ctルース(E, IF, 3Excellent H&C) GIA

[Lottery Sale ①_202608_09] Internally Flawless Diamond (H&C) 3.9mm/0.215ct Loose (E, IF, 3Excellent H&C) GIA Sale price¥75,800

[Published as 12564054] Kochi Prefecture Coral 8.132ct Loose Stone Sale price¥69,800

[Published as 12564055] American Red Beryl 0.239ct Loose Stone Sale price¥69,800

Loose White Diamond 0.108ct (FANCY WHITE, I-1) Sale price¥55,800

Brazilian Paraiba Tourmaline 0.068ct loose stone Sale price¥61,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.459ctルース

[Lottery Sale 0707_08] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.459ct Loose Stone with Certificate Sale price¥69,800

[Lottery Sale 0707_09] Unheated Burmese Sapphire 0.210ct Loose GIA Sale price¥69,800

インターナリーフローレスダイヤモンド（H&C） 3.8mm/0.206ctルース(D, IF, 3Excellent H&C)

[Lottery Sale 0731_12] Internally Flawless Diamond (H&C) 0.206ct Loose (D, IF, 3Excellent H&C) Sale price¥89,800

[Lottery Sale 0628_05] American Neptunite 0.374ct Loose Stone with Gemstone Identification Report Sale price¥79,800

[Lottery Sale 0725_10] Unheated Mozambique Pigeon Blood Ruby 0.430ct Loose Gemstone AIGS Sale price¥98,000

[Lottery Sale 0725_11] Burmese Pigeon Blood Ruby 0.450ct Loose AIGS Sale price¥98,000

[Lottery Sale 0718_08] Tanzanian Pink Zoisite 0.419ct Loose Stone with Gem Identification Report Sale price¥69,800

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.