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Patch《Cannot be purchased separately》

Patch《Cannot be purchased separately》 Sale price¥0
Sold out 高知県産血赤珊瑚 1.879ctルース

[On sale June 8th at 10 PM JST] Kochi Prefecture-produced oxblood coral, 1.879 ct loose stone
Sold out 高知県産血赤珊瑚 5.779ct原石

[On sale June 13, 10 PM] Kochi Prefecture Blood Coral 5.779 ct Branch (Rough)
Sold out 高知県産血赤珊瑚 20.726ct原石

[On Sale 6/8, 10 PM JST] Kochi Prefecture Harvested Red Coral 20.726ct Branch (Raw Material)
Sold out 高知県産血赤珊瑚 21.156ct原石

[On sale June 3rd, 10 PM JST] Kochi Prefecture-produced oxblood coral, 21.156 ct raw coral
Sold out オパール 0.878ctルース

Ethiopian Opal 5.7mm/0.878ct Loose (Sphere)

Sold out モザンビーク産エルバイトトルマリン 1.793ctルース

Mozambique Elbaite Tourmaline 1.793ct Loose Stone

Sold out マダガスカル産スフェーン 0.569ctルース

Madagascar sphene 0.569ct loose stone
Sold out マダガスカル産バイカラーサファイア 0.296ctルース

Madagascar Bicolor Sapphire 0.296ct Loose

Sold out フラワークォーツ 6.928ctルース

Brazilian Flower Quartz 6.928ct Loose Stone
Sold out シトリン 5.121ctルース

[Koshu Precious Stones plusthree] Citrine 5.121ct Loose
Sold out ブラジル産バイカラートルマリン 3.785ctルース

Brazilian Bi-Color Tourmaline 3.785ct Loose Stone [On sale May 27th, 10 PM JST]
Sold out 【5/23 22時販売】《限定11石》カービングガチャ💎通常29,800円のイチゴカット43ctのブルートパーズ・フラワーカットのアメジスト・プルメリアカットなど（おまけで特殊カットブルートパーズ8-10mm）《複数購入割引有》　

【5/23 22時販売】《限定11石》カービングガチャ💎通常29,800円のイチゴカット43ctのブルートパーズ・フラワーカットのアメジスト・プルメリアカットなど（おまけで特殊カットブルートパーズ8-10mm）《複数購入割引有》　
Sold out 《Limited to 9 Stones》Specialty Cut Gacha💎Koshu Kiseki Kiriko plusthree "Subaru: Ametrine" (normally 39,800 yen) and works by Takeshi Yamamoto, etc. (plus one citrine by Mr. Sanje as a bonus)《Multiple Purchase Discount Available》

《Limited to 9 Stones》Specialty Cut Gacha💎Koshu Kiseki Kiriko plusthree "Subaru: Ametrine" (normally 39,800 yen) and works by Takeshi Yamamoto, etc. (plus one citrine by Mr. Sanje as a bonus)《Multiple Purchase Discount Available》
Sold out [On Sale May 29, 10 PM JST] 《Limited 13 Stones》Yellow Diamond Gacha, win a VVS-2/4.3mm/with Sorting Report worth 39,800 yen (regular price) 💎《Multiple Purchase Discount Available》

[On Sale May 29, 10 PM JST] 《Limited 13 Stones》Yellow Diamond Gacha, win a VVS-2/4.3mm/with Sorting Report worth 39,800 yen (regular price) 💎《Multiple Purchase Discount Available》
Sold out [Sales begin June 12 at 10 PM JST] Blue Gem Gacha 💎 Featuring Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 3.2%) normally priced at 35,800 JPY, Zimbabwean Euclase, and more! 《Bulk purchase discounts available》

[Sales begin June 12 at 10 PM JST] Blue Gem Gacha 💎 Featuring Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 3.2%) normally priced at 35,800 JPY, Zimbabwean Euclase, and more! 《Bulk purchase discounts available》
Sold out [On sale 5/23 at 10 PM] Limited to 5 stones: Burmese Ice Jadeite (approx. 3.3-3.8mm) - Multiple purchase discount available

[On sale 5/23 at 10 PM] Limited to 5 stones: Burmese Ice Jadeite (approx. 3.3-3.8mm) - Multiple purchase discount available
Sold out Limited to 13 stones: Namibian Jeremejevite (Elemejevite) 1 stone loose stone (Multiple purchase discounts available)

Limited to 13 stones: Namibian Jeremejevite (Elemejevite) 1 stone loose stone (Multiple purchase discounts available)
Sold out スペイン産スファレライト 1.127ctルース

Spanish Sphalerite 1.127ct loose stone
Sold out ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 0.200ctルース

Russian Demantoid Garnet Cat's Eye (Horsetail Recognized) 0.200ct Loose
Sold out メキシコ産オパール 1.666ctルース

Mexican Opal 1.666ct Loose
Sold out コロンビア産エメラルド 0.167ctルース

Colombian emerald 0.167ct loose stone with jewel
Sold out コーネルピン 0.303ctルース

Tanzanian Kornerupine 0.303ct loose stone

Sold out コロンビア産パイライト・雲母インエメラルド 0.844ctルース

Colombian pyrite-mica emerald 0.844ct loose stone
Sold out Brazilian Romanesite in Quartz 2.914ct loose stone

Brazilian Romanesite in Quartz 2.914ct loose stone
Sold out ブラジル産パライバトルマリン 0.036ctルース

[On sale May 17th at 10 PM JST] Brazilian Paraiba Tourmaline 0.036ct Loose Stone (CuO: 1.6%, MnO: 3.1%)
Sold out [On sale May 17th, 10 PM] Brazilian Paraiba Tourmaline 0.035ct Loose Stone (CuO: 2.4%, MnO: 2.5%)

[On sale May 17th, 10 PM] Brazilian Paraiba Tourmaline 0.035ct Loose Stone (CuO: 2.4%, MnO: 2.5%)
Sold out 【12562862掲載】コロンビア産トラピッチェエメラルド 0.448ctルース

Colombian Trapiche Emerald, 0.446 ct, Loose Stone, with Certificate
Sold out パキスタン産カイヤナイト 1.181ctルース

[On sale June 3rd, 10 PM JST] Nepali Bicolor Green Kyanite 1.181ct Loose Stone
Sold out ブラジル産フラワークォーツ 6.004ctルース

Brazilian Flower Quartz 6.004ct Loose Stone
Sold out フラワークォーツ 7.144ctルース

Brazilian Flower Quartz 7.144ct Loose Stone
Sold out ブラジル産フラワークォーツ 6.582ctルース

Brazilian Flower Quartz 6.582ct Loose Stone
Sold out Non-Oil Emerald 0.555ct Loose Stone by Nikkei

Non-Oil Emerald 0.555ct Loose Stone by Nikkei
Sold out アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.404ctルース

Andesine Labradorite (also known as Rainbow Moonstone) 0.404ct loose stone
Sold out アンデシン・ラブラドライト（通称名 レインボームーンストーン） 3.251ctルース

Andesine Labradorite (also known as Rainbow Moonstone) 7.7mm/3.251ct Loose Stone (Sphere)
Sold out ゴーシェナイト 1.040ctルース

Goshenite 1.040ct loose
Sold out Pink tourmaline 0.795ct loose

Pink tourmaline 0.795ct loose
Sold out スカイブルートパーズ 10.967ctルース

Sky blue topaz 10.967ct loose
Sold out Pt950 ブラジル産バイカラーエメラルド 1.084ct リング

[Sales start 10 PM, May 26th] Colorful: Pt950 Brazilian Bi-Color Emerald 1.084ct and Ice Blue Diamond 0.062ct Ring

Sold out Pt900 ブラジル産パライバトルマリン 0.11ct リング

【Sale starts 5/26 at 10 PM JST】[Colorful] Pt900 Paraiba Tourmaline from Brazil 0.11ct / Diamond 0.58ct Ring (CuO: 2.4%, MnO: 0.9%)

Sold out K14WG ブルーサファイア 0.22ctct ペンダント（ネックレス）

[ColorFleuri] K14WG Blue Sapphire 0.22ct Pendant (Necklace)
Sold out K18 合成ルビー ペンダントトップ（ネックレストップ）

[On sale May 30th at 10 PM] [Colorfri] K18 Synthetic Ruby / Synthetic Spinel Pendant Top (Necklace Top) with Certificate of Authenticity
Sold out スペイン産アンダリュサイト 0.582ctルース

[On Sale June 7th, 10 PM] Andalusite from Spain, 0.582 ct loose stone
Sold out スペイン産アンダリュサイト 0.469ctルース

[On sale May 24, 10 PM JST] Spanish Andalusite 5.0mm/0.469ct Loose Stone

Sold out ブラジル産カシャライアメジスト 0.387ctルース

[On sale June 3rd, 10 PM JST] Brazilian Kasharaiya Amethyst 0.387ct Loose Stone
Sold out 中国・湖南省シンシャ（辰砂・シナバー） 0.882ctルース

[On sale 5/18 at 10 PM] Cinnabar from Hunan, China, 0.882 ct Loose Stone, with certification
Sold out 中国・湖南省シンシャ（辰砂・シナバー） 0.629ctルース

[Sales start 10 PM on May 22] Cinnabar (辰砂) from Hunan, China, 0.629 ct loose, with certificate

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.