pear shape

[Lottery Sale 0818_12] Loose 0.251ct Red Beryl (USA) with Certificate Sale price¥98,000

[#202607 Akihabara Pop-up Store Takeout][Shinjuku Marui Annex 202605 Takeout][12548265 Listed] Padparadscha Sapphire 0.545ct Loose Stone Sale price¥69,800

アフガニスタン産アフガニスタン産ラズライトインソーダライト 0.425ctルース

【9/18 22時販売】アフガニスタン産ラズライトインソーダライト 0.425ctルース Sale price¥9,800

Colombian pyrite-mica emerald 0.628ct loose stone Sale price¥29,800

Tanzanian Dragon Garnet 0.748ct Loose Stone Sale price¥18,800

【Lottery Sale 0818_02】Brazilian Fanaizinho Sphene 0.956ct Loose Stone with Certificate Sale price¥19,800

Zimbabwean Apatite (UV Type) 0.585ct Loose Sale price¥8,800

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

Montana Sapphire 0.331ct Loose (Bi-Color Sapphire) Sale price¥6,980

【12551314掲載】ジンバブエ産ブルーアパタイト（UVタイプ） 1.019ctルース

Zimbabwean Blue Apatite (UV Type) 1.019ct Loose Sale price¥8,800

Bicolor Euclase from Zimbabwe 0.033ct loose Sale price¥18,800

Paraiba Tourmaline from Brazil 0.067 ct loose (CuO: 1.4%, MnO: 2.4%) Sale price¥39,800

Tanzania Bicolor Zoisite 0.397ct Loose Stone Sale price¥8,800

Zimbabwean Blue Apatite (UV type) 1.056ct loose stone Sale price¥9,800

ブラジル産パライバトルマリン 0.239ctルース（CuO:1.0%、MnO:3.9%）

Brazilian Alexandrite 0.239ct Loose Gemstone [Listed as 12564071] Sale price¥45,800

【9/6 22時販売】ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.358ctルース Sale price¥12,800

【9/7 22時販売】ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.574ctルース Sale price¥14,800

【9/10 22時販売】ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.507ctルース Sale price¥12,800

【9/10 22時販売】ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.930ctルース Sale price¥18,800

【9/7 22時販売】タンザニア産マヘンゲスピネル（ピンクスピネル） 0.386ctルース Sale price¥15,800

非加熱ブラジル産パライバトルマリン 0.079ctルース（CuO:1.8%、MnO:2.6%）

Unheated Brazilian Paraiba Tourmaline 0.079ct loose stone (CuO: 1.8%, MnO: 2.6%) Sale price¥45,800

Brazilian Indigolite Tourmaline 1.109ct Loose Stone, Japan-Germany Exchange Sale price¥29,800

[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

[Lottery Sale 0825_10] Colombian Non-Oil Emerald 0.090ct Loose GIA Sale price¥128,000

[Lottery Sale 0812_18] Zambian Non-Oil Emerald 0.540ct Loose GIA Sale price¥178,000

【8/29 22時販売】マダガスカル産アンダリュサイト 0.454ctルース Sale price¥7,980

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

【9/1 22時販売】コロンビア産エメラルド 0.123ctルース Sale price¥18,800

【9/1 22時販売】タンザニア産ツァボライト 0.366ctルース Sale price¥13,800

【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】タンザニア産マヘンゲスピネル（ピンクスピネル） 0.366ctルース鑑別書 Sale price¥39,800

【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

【9/3 22時販売】スリランカ産パープルサファイア 0.376ctルース鑑別書 Sale price¥35,800

【9/3 22時販売】スリランカ産パープルサファイア 0.258ctルース鑑別書 Sale price¥25,800

[On sale August 27th at 10 PM] Sri Lankan green sapphire 0.354ct loose stone with certificate Sale price¥12,800

Zimbabwe Euclase 0.134ct Loose Sale price¥25,800

[On sale August 23rd at 10 PM] Old Czechoslovakia Moldavite 1.817ct Loose Stone with Certificate of Authenticity Sale price¥24,800

[Sale on August 23 at 10 PM] Old Czechoslovakia Moldavite 1.786ct Loose Stone with Certificate Sale price¥22,800

[Published as 12563759] Tanzanian Ayanad Spinel (Hot Pink Spinel) 0.181ct Loose Gemstone Sale price¥25,800

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

インターナリーフローレスダイヤモンド 0.300ctルース(D, IF) GIA

[Lottery Sale ①_202608_12] Internally Flawless Diamond 0.300 ct Loose (D, IF) GIA Sale price¥118,000

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

オレンジダイヤモンド 0.348ctルース(FANCY VIVID YELLOW ORANGE, VS-1)

[Featured in 32501971] Orange Diamond 0.348ct Loose Stone (FANCY VIVID YELLOW ORANGE, VS-1) Sale price¥128,000

[Lottery Sale 0725_03] Tanzania Purple Spinel 0.427ct Loose Stone with Certificate Sale price¥29,800

[#202607 Akihabara Pop-up, Currently Off-site] [12563253 Posted] Afghan Hauyne 0.112ct Loose Stone Sale price¥28,800

Afghan Green Hauyne 0.062ct Loose with Certificate Sale price¥16,800

[On sale August 2 at 10 PM] Colombian Emerald 0.107 ct Loose Gemstone with Certificate Sale price¥12,800

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.