¥50,000 - ¥100,000

Czech Aragonite 8.0mm/2.082ct Loose Stone Sale price¥59,800

Spanish Sphalerite 8mm/2.796ct loose stone Sale price¥69,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.736ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.736ct loose stone Sale price¥69,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.888ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.888ct Loose Sale price¥79,800

【甲州貴石切子】レピドクロサイトインクォーツ 44.310ct《コラボ》ルースワッペン付

[Koshu Precious Stone Kiriko] Lepidocrocite in Quartz 44.310ct《Collaboration》Loose with emblem Sale price¥55,800

[#202607 Akihabara Popup Out for Sale] [Lottery Sale 12] [For Winners Only] [12562560 Listed] Unheated Montana Sapphire (Yogo Origin) 0.159ct Loose with Certificate Sale price¥98,000

[Lottery Sale 0829] Cambodian Blue Zircon (Ratanakiri Blue) 3.363ct Loose Gemstone Sale price¥98,000

【9/13 22時販売】K18YG タンザニア産アルマンディンガーネット 1.003ct・ピンクサファイアリング Sale price¥89,800

イエローダイヤモンド 0.285ctルース(UNDER N(VERY LIGHT YELLOW), VS-1)

【9/12 22時販売】イエローダイヤモンド 0.285ctルース(VERY LIGHT YELLOW, VS-1)　 Sale price¥55,800

【9/7 22時販売】ブラジル産バイカラートルマリン 3.337ctルース Sale price¥59,800

[Lottery Sale 0812_19] Bolivian Phosphophyllite 1.806ct Loose Stone with Gemstone Identification Report Sale price¥69,800

Pt900 キャシテライト 4mm/0.57ct ・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_03] Pt900 Cassiterite from Yunnan Province, China 4mm/0.57ct Diamond 0.16ct Pendant Top (Necklace Top) with Appraisal Certificate Sale price¥69,800

[Lottery Sale ②_202608_02] Unheated Kashmir Sapphire 2.6mm/0.110ct Loose Stone GIA Sale price¥79,800

Brazilian Morganite 4.720ct loose stone Sale price¥98,000

Cassiterite 1.658ct loose stone (bicolor cassiterite) Japan-Germany exchange Sale price¥98,000

[Lottery Sale 0707_10] Unheated Montana Sapphire (Yogo Mine) 0.173ct Loose Stone with Japan-Germany Gemological Report Sale price¥98,000

【Lottery Sale 0718_07】Tanzanian Pink Zoisite 0.398ct Loose Stone with Certificate Sale price¥59,800

[Lottery Sale ②_202608_07] Myanmar Orange Spinel 0.855ct Loose Stone Sale price¥98,000

Lottery Sale 0812_15: Brazilian Indicolite Tourmaline 3.756ct Loose Stone with Japan-Germany Gemological Report Sale price¥98,000

Brazilian Dolomite 4.070ct Loose Stone, Japan-Germany Mirror Sale price¥79,800

【9/9 22時販売】【カラフリ】Pt900 オパール 1.10ct ダイヤモンド0.46ctリング Sale price¥98,000

【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

【9/14 22時販売】【カラフリ】Pt900 ルビー 0.71ct・ダイヤモンド 0.24ctリング鑑別書 Sale price¥98,000

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

[Lottery Sale 0818_07] Madagascar Bi-Color Sapphire 1.870ct Loose Stone with Gem Identification Report Sale price¥79,800

[Lottery Sale 0818_09] Brazilian Dioptase 1.608ct Loose with Certificate Sale price¥59,800

Pt900/Pt850 ピンクトルマリン 1.10ct ダイヤモンド0.02ctペンダント（ネックレス）鑑別書

[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

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

"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring - Enforcer Design [Kogami Shinya Model] "Blue Spinel" Sale priceFrom ¥25,800

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.