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ブラジル産ロードナイトインクォーツ 0.438ctルース

【9/3 22時販売】ブラジル産ロードナイトインクォーツ 0.438ctルース Sale price¥8,800
ブラジル産ロードナイトインクォーツ 0.562ctルース

【9/3 22時販売】ブラジル産ロードナイトインクォーツ 5.5mm/0.562ctルース Sale price¥8,800
ブラジル産ロードナイトインクォーツ 0.600ctルース

【9/3 22時販売】ブラジル産ロードナイトインクォーツ 6.2mm/0.600ctルース Sale price¥9,800
スリランカ産ブルーサファイア 0.451ctルース

【9/3 22時販売】スリランカ産ブルーサファイア 0.451ctルース 鑑別書 Sale price¥29,800
Purple zoisite from Tanzania 1.103ct loose Japanese German edition

Purple zoisite from Tanzania 1.103ct loose Japanese German edition Sale price¥98,000
ロシア産ダイヤモンド原石（ソーヤブル） 0.101ctルース

Russian rough diamond (sawable) 0.101ct loose Sale price¥22,800
ボツアナ産ダイヤモンド原石（ソーヤブル） 0.140ct原石

[Posted as 12563267] Rough Botswana Diamond (Sawable) 0.140ct Sale price¥44,800
[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available] Sale price¥4,580
[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available] Sale price¥3,980
[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available] Sale price¥3,980
ブラジル産マーカサイトインクォーツ 4.188ctルース

[Published 12562277] Brazilian Marcasite in Quartz Loose Stone 4.188ct Sale price¥12,800
スリランカ産イエローサファイア 2.190ctルース GIT

[Lottery Sale ②_202608_10] Yellow Sapphire 2.190ct Loose GIT Sale price¥158,000
タンザニア産クロムトルマリン 2.271ctルース 鑑別書

【Lottery Sale ②_202608_15】Tanzanian Chrome Tourmaline 2.271ct Loose Stone Sale price¥98,000
ナミビア産ジェレメジェバイト 0.103ctルース 鑑別書

[Listed as 12563354] Jeremejevite from Namibia, 0.103ct Loose Stone Sale price¥25,800
スリランカ産ピンクサファイア 0.319ctルース 鑑別書

[Featured in 12563725] Sri Lankan Pink Sapphire 0.319ct Loose Sale price¥29,800
Pt950 ブルージルコン（ラタナキリブルー） 5.00ct ペンダントトップ（ネックレストップ）鑑別書

[Sale at 10 PM on August 25] [Colorful] Pt950 Blue Zircon (Ratanakiri Blue) 5.00ct Pendant Top (Necklace Top) with certificate Sale price¥148,000
Pt900 タイ産ルビー 1.00ct・ダイヤモンド0.40ctリング GIA

[Published 22602679] [Calafuri] Pt900 Thai Ruby 1ct Ring Sale price¥298,000
K18WG ターコイズ 15.78ct/15.73ct ピアス 鑑別書

[Featured in 22602706] [Calafuri] K18WG Turquoise Earrings Sale price¥24,800
K18YG アイドクレース/ベスビアナイト 0.908ct・ダイヤモンド0.19ctリング 鑑別書

[Lottery Sale 0731_13] [Colorfury] K18YG Idocrase 0.908ct Ring with appraisal report Sale price¥128,000
[Published on 22602652] [Colorful] K18 Synthetic Opal Pendant Top

[Published on 22602652] [Colorful] K18 Synthetic Opal Pendant Top Sale price¥16,800
Pt900 スターサファイア 0.744ct・ダイヤモンド0.167ctリング 鑑別書

【22602701掲載】【Karafuri】Pt900 Star Sapphire 0.744ct Ring Sale price¥128,000
Pt900 マンダリンガーネット 1.15ct・ダイヤモンド0.11ctペンダントトップ（ネックレストップ） 鑑別書

[22602704 Posted] [Colorful] Pt900 Mandarin Garnet 1.15ct Pendant Top Sale price¥110,000
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合成アレキサンドライト0.41ct・ダイヤモンド0.54ctリング 鑑別書

[Lottery Sale 0812_08] Pt900 Synthetic Alexandrite and 0.54ct Diamond Ring with Certificate Sale price¥128,000
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
[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》

[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》 Sale price¥3,980
[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"

[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available" Sale price¥3,980
ミャンマー産ペリドット 3.748ctルース（スター効果有り）

[Posted 12549460] Star peridot from Myanmar 3.748ct loose Sale price¥19,800
ミャンマー産ペリドット 5.973ctルース（スター効果有り）

[Updated 12546024] Ametrine 4.206ct loose Sale price¥39,800
Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases.

Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases. Sale price¥3,980
1 Brazilian Euclase rough stone (discount available for multiple purchases)

1 Brazilian Euclase rough stone (discount available for multiple purchases) Sale price¥3,980
スリランカ産ブルーサファイア 0.286ctルース 鑑別書

[On Sale August 23rd, 10 PM] Sri Lankan Blue Sapphire 0.286ct Loose Stone with Certificate Sale price¥14,800
スリランカ産イエローサファイア 1.100ctルース 日独鑑

[On sale 8/23 at 10 PM JST] Sri Lankan Yellow Sapphire 1.100ct Loose Stone, Japan/Germany certified Sale price¥49,800
高知県産血赤珊瑚 0.830ctルース

[Sales begin August 24 at 10 PM JST] 0.830ct Red Coral Loose Stone from Kochi Prefecture Sale price¥9,800
高知県産血赤珊瑚 0.984ctルース

[Sales begin 8/24 22:00] Kochi Prefecture Produced Deep Red Coral 0.984ct Loose Stone Sale price¥9,800
高知県産血赤珊瑚 1.370ctルース

[On sale August 24th at 10 PM] Kochi Prefecture Red Coral 1.370ct Loose Stone Sale price¥11,800
高知県産血赤珊瑚 0.939ctルース

[On sale August 24th at 10 PM] Kochi Prefecture Blood Coral 0.939ct Loose Stone Sale price¥9,800
ブラジル産ストロベリークォーツ 0.830ctルース

【Sales start 8/24 10 PM JST】Brazilian Strawberry Quartz 5.9mm/0.830ct Loose Stone Sale price¥6,980
マダガスカル産ラブラドライト 2.651ctルース

[On sale August 25, 10 PM JST] Madagascar Labradorite 8.7mm/2.651ct Rose-Cut Loose Gemstone Sale price¥9,800
ペツォッタイト 0.062ctルース

[Sale starts August 25th at 10 PM JST] Madagascar Pezzottaite 2.7mm/0.062ct Loose Gemstone Sale price¥11,000
ブラジル産ローズクォーツ 1.816ctルース

[On sale August 25th, 10 PM JST] Brazilian Rose Quartz 1.816ct Loose Gemstone Sale price¥12,800
ブラジル産ライモナイトイントパーズ 5.103ctルース

[On sale August 25 at 10 PM] Brazilian Limonite in Topaz 5.103 ct Loose Stone Sale price¥12,800
ブラジル産ローズクォーツ 1.089ctルース

Brazilian Rose Quartz Loose Stone 1.089ct [On Sale August 25th at 10 PM JST] Sale price¥14,800
合成ルチル 0.344ctルース

【Sale starts 8/25 10 PM JST】Synthetic Rutile 0.344ct Loose Gemstone Sale price¥8,800
ルビー 0.168ctルース

[On sale August 25th, 10 PM] Ruby 0.168ct Loose Stone Sale price¥11,800
ルビー 0.268ctルース

[On sale August 25th at 10 PM] Ruby loose stone, 0.268ct Sale price¥15,800

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.