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Sold out 【22602588掲載】【カラフリ】Pt900 ピンクダイヤモンド 0.008ct ペンダント（ネックレス）

[On sale May 3rd, 10 PM] [Colorful] Pt900 Pink Diamond 0.008ct / Diamond 0.03ct Pendant (Necklace) with Identification Card

Sold out 【22602585掲載】【カラフリ】K18PG スピネル 0.48ct ペンダントトップ（ネックレストップ）

[On sale May 3rd, 10 PM JST] [Colorfury] K18PG Pink Spinel 0.48ct Pendant Top (Necklace Top) with Identification Card
Sold out 【22602584掲載】【カラフリ】Pt900 ブルージルコン（ラタナキリブルー） 2.27ct リング

[On sale May 1st at 10 PM] [Colorfuri] Pt900 Blue Zircon (Ratanakiri Blue) 2.27ct/Diamond 0.28ct Ring

Sold out [Sale May 3rd, 10 PM] [Colorful] Pt900 Diamond 0.5ct Ring with Appraisal Report

[Sale May 3rd, 10 PM] [Colorful] Pt900 Diamond 0.5ct Ring with Appraisal Report
Sold out K18PG モルガナイト ペンダントトップ（ネックレストップ）

[On sale May 14th at 10 PM] [Colorfri] K18PG Morganite and 0.04ct Diamond Pendant Top (Necklace Top) with Appraisal Report
Sold out Pt950 スイスブルートパーズ 3.5ct ペンダントトップ（ネックレストップ）鑑別書

[On Sale May 26th, 10 PM] Colorful Pt950 Swiss Blue Topaz 3.5ct Pendant Top (Necklace Top) with Appraisal Report

Sold out Untreated Vietnamese Star Ruby 1.696ct Loose Stone with Certification

Untreated Vietnamese Star Ruby 1.696ct Loose Stone with Certification
Sold out ボリビア産フォスフォフィライト 0.448ctルース

Bolivian Phosphophyllite 0.448ct Loose Stone with Certificate

Sold out 【12562785掲載】コロンビア産エメラルドキャッツアイ 0.574ctルース

【On sale May 2nd, 10 PM JST】Colombian Emerald Cat's Eye 0.574ct Loose Stone
Sold out コロンビア産エメラルド 4.7mm/0.468ctルース

[On sale 5/5 at 22:00] Colombian Emerald 4.7mm/0.468ct Loose Stone

Sold out コロンビア産エメラルドキャッツアイ 1.571ctルース

[Sale starts 10 PM JST on 5/14] Colombian Emerald 1.571ct Loose Stone Pendant Top
Sold out 【12562779掲載】ブラジル産デンドリティックアゲート 12.309ctルース

[On sale May 2, 10 PM] Brazilian Dendritic Agate 12.309ct Loose Stone
Sold out アフガニスタン産アウイナイト 0.437ctルース 中宝

[On sale May 6, 10 PM] Afghan Hauyne 0.437 ct Loose Gemstone, Chuo鑑定済
coming soon アフガニスタン産クンツァイト（ライラックピンク） 69.722ctルース

[Lottery Sale 0707_06] Kunzite from Afghanistan, 69.722ct Loose Stone Sale price¥258,000
Sold out コロンビア産パイライトインエメラルド 2.780ctルース

Colombian Pyrite Inclusion Emerald 2.780ct Loose Rare Stone [Limited to 1 pc] ¥198,000 12562799

coming soon タンザニア産アレキサンドライト 0.843ct原石

Rough Tanzanian Alexandrite 0.843ct Sale price¥29,800
Sold out Brazilian Swiss Blue Topaz 1.198ct Loose

Brazilian Swiss Blue Topaz 1.198ct Loose
Sold out ブラジル産非加熱インペリアルトパーズ（シェリーカラー） 0.351ctルース

[On sale May 5th, 10 PM JST] Unheated Brazilian Imperial Topaz (Sherry Color) 0.351ct Loose Gemstone
Sold out 【12562769掲載】ブラジル産マイカインローズクォーツ（雲母インローズクォーツ） 3.123ctルース

Brazilian Mica in Rose Quartz (Muscovite in Rose Quartz) 3.123ct Loose

Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.221ct Loose Stone

Madagascar Bekily Blue Garnet (Color Change Garnet) 0.221ct Loose Stone
Sold out [On sale May 1st at 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.206ct Loose Stone

[On sale May 1st at 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.206ct Loose Stone

Sold out Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.254ct Loose Stone

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.254ct Loose Stone

Sold out Loose Columbian Pyrite in Emerald 3.346 ct

Loose Columbian Pyrite in Emerald 3.346 ct

Sold out コロンビア産パイライトインエメラルド 2.503ctルース

2.503 ct Loose Emerald with Pyrite from Colombia

coming soon 【12562753掲載】コロンビア産パイライトインエメラルド 2.281ctルース

[Lottery Sale 0707_07] Colombian Pyrite in Emerald Loose Stone 2.281ct Sale price¥45,800
Sold out モザンビーク産パライバトルマリン 1.581ctルース

Paraiba tourmaline from Mozambique 1.581ct loose stone (CuO: 0.5%, MnO: 1.0%)
Sold out ブラジル産パライバトルマリン 0.216ctルース

Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%)
Sold out K18/Pt950グリーンアウイナイト0.162ct リング

K18/Pt950 Afghanistan Green Apatite 0.162ct Ring
Sold out オレゴンサンストーン 0.390ctルース

Oregon sunstone 0.390ct loose
Sold out [On Sale 5/30 at 10 PM] "Limited 9 Stones" Blue Gem Gacha 💎 Brazilian Paraiba Tourmaline (CuO: 2.2%, MnO: 3.5%), Top Color Benitoite, Hauyne, Apatite (Multi-purchase discount available)

[On Sale 5/30 at 10 PM] "Limited 9 Stones" Blue Gem Gacha 💎 Brazilian Paraiba Tourmaline (CuO: 2.2%, MnO: 3.5%), Top Color Benitoite, Hauyne, Apatite (Multi-purchase discount available)
Sold out 《Limited to 10 Gems》DGL certified, pink sapphire gacha including a 0.155ct Padparadscha sapphire, plus a bonus sapphire such as a trillion cut! 《Multi-purchase discount available》

《Limited to 10 Gems》DGL certified, pink sapphire gacha including a 0.155ct Padparadscha sapphire, plus a bonus sapphire such as a trillion cut! 《Multi-purchase discount available》
Sold out Guatemalan Jade (with certificate, 3-3.5mm) - 1 Stone Loose - Limited to 10 Stones - Multiple Purchase Discount Available

Guatemalan Jade (with certificate, 3-3.5mm) - 1 Stone Loose - Limited to 10 Stones - Multiple Purchase Discount Available
Sold out 《Limited to 12 Stones》Rare Stone Gacha 💎 Cinnabar from China, Paraiba Tourmaline from Mozambique, Grandidierite, etc.《Multiple Purchase Discount Available》

《Limited to 12 Stones》Rare Stone Gacha 💎 Cinnabar from China, Paraiba Tourmaline from Mozambique, Grandidierite, etc.《Multiple Purchase Discount Available》
Sold out アンダリュサイト 0.440ctルース

Spanish Andalusite 0.440ct loose stone
Sold out アルマンディンガーネット 1.255ctルース

Almandine Garnet 1.255ct Loose Stone
Sold out フラワークォーツ 6.501ctルース

Brazilian Flower Quartz 6.501ct Loose Stone
Sold out エチオピア産ハニカムオパール 3.566ctルース

Ethiopian honeycomb opal 3.566ct loose stone
Sold out ラベンダークォーツ（スコロライト） 1.761ctルース

[Koshu Precious Stones Plusthree] Lavender Quartz (Scorolite) 1.761ct Loose Stone
Sold out クリストバライトインクォーツ 1.660ctルース

Cristobalite in Quartz 1.660ct Loose
Sold out オパール 1.694ctルース

Ethiopian Opal 1.694ct Loose
Sold out オレゴンサンストーン 0.551ctルース

Oregon Sunstone 0.551ct loose
Sold out マダガスカル産オイルインクォーツ1石ルース（近年発見の新しい産地,平均28ct）《複数購入割引有》

[Limited to 7 stones] 1 loose oil-in-quartz stone from Madagascar (new locality discovered in recent years, average 28ct) [Multiple purchase discounts available]
Sold out Mexican Fire Opal 0.290ct Loose (Faceted Cut)

Mexican Fire Opal 0.290ct Loose (Faceted Cut)
Sold out パープルスピネル 0.520ctルース

Purple spinel 0.520ct loose
Sold out レピドクロサイトインクォーツ 0.797ctルース

Lepidocrocite in quartz 0.797ct loose
Sold out Sky blue topaz 5.595ct loose

Sky blue topaz 5.595ct loose
Sold out 奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.922ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 0.922ct loose
Sold out 【甲州貴石切子plusthree】モルダバイト 1.511ctルース ワッペン付

[Koshu precious stone Kiriko plusthree] Moldavite 1.511ct loose with patch

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.