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Hau night

Hauinite has an impressive bright cobalt blue color. It is also known as one of the minerals that make up lapis lazuli. Because its production areas are limited and large grains are difficult to harvest, it is highly valued as a rarity. Some of them even fluoresce under ultraviolet light.

Karatz GemMagazine
" Aui Night "

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ドイツ産アウイナイト 0.070ctルース

German Awinite 0.070ct loose stone Sale price¥29,800
ドイツ産アウイナイト 0.056ctルース

German Awinite 0.056ct loose stone Sale price¥22,800
Pt900 アウイナイト 0.065ct ペンダントトップ（ネックレストップ）

[Sale starts May 14th, 10 PM JST] [Colorfuri] Pt900 German Hauyne 0.065ct Pendant Top (Necklace Top) with Certificate Sale price¥39,800
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 Sale price¥158,000
Auinite 2.3mm/0.060ct loose

Auinite 2.3mm/0.060ct loose Sale price¥6,980
アウイナイト 0.084ctルース

Auinite 2.6mm/0.084ct loose Sale price¥8,800
アウイナイト 0.064ctルース

Auinite 2.4mm/0.064ct loose Sale price¥8,800
German Auyinite 3.5mm/0.131ct Loose Stone

German Auyinite 3.5mm/0.131ct Loose Stone Sale price¥29,800
German Apatite 0.048ct Loose Stone

German Apatite 0.048ct Loose Stone Sale price¥19,800
German Hauyne 2.2mm/0.035ct Loose Stone

German Hauyne 2.2mm/0.035ct Loose Stone Sale price¥18,800
German Hauyne 2.7mm/0.076ct Loose Stone

German Hauyne 2.7mm/0.076ct Loose Stone Sale price¥29,800
ドイツ産アウイナイト 0.063ctルース

German Awinite 0.063ct loose stone Sale price¥29,800
ドイツ産アウイナイト 0.073ctルース

German Apatite 0.073ct loose stone Sale price¥32,800
ドイツ産アウイナイト 0.095ctルース

German Auchenite 0.095ct loose stone Sale price¥39,800
ドイツ産アウイナイト 0.085ctルース

German Auchenite 0.085ct loose stone Sale price¥45,800
ドイツ産アウイナイト 0.083ctルース

German Auchenite 0.083ct loose stone Sale price¥45,800
ドイツ産アウイナイト 0.097ctルース

German Apatite 0.097ct loose stone Sale price¥39,800
ドイツ産アウイナイト 3.5mm/0.158ctルース

German Awinite 3.5mm/0.158ct loose stone Sale price¥98,000
アフガニスタン産アウイナイト 0.075ctルース JTL鑑

Afghanistan Awinite 0.075ct loose stone JTL catalog Sale price¥35,800
アフガニスタン産アウイナイト 0.069ctルース

Afghanistan Awinite 0.069ct loose stone JTL catalog Sale price¥29,800
アウイナイト 0.117ctルース

German Awinite 0.117ct loose stone Sale price¥25,800
アウイナイト 0.076ctルース

German Awinite 0.076ct loose stone Sale price¥18,800
Sold out Blue Stone Gacha💎 (Brazilian Paraiba Tourmaline, Mozambique Paraiba Tourmaline, German Auchenite, Benitoite) {Multiple Purchase Discounts Available}

Blue Stone Gacha💎 (Brazilian Paraiba Tourmaline, Mozambique Paraiba Tourmaline, German Auchenite, Benitoite) {Multiple Purchase Discounts Available}
Sold out 《Limited to 9 Stones》Blue Gem Gacha💎Paraiba Tourmaline (CuO:2.2%.MnO:3.5%)・Hauyne・Benitoite・Apatite《Multiple Purchase Discount Available》

《Limited to 9 Stones》Blue Gem Gacha💎Paraiba Tourmaline (CuO:2.2%.MnO:3.5%)・Hauyne・Benitoite・Apatite《Multiple Purchase Discount Available》
Sold out Pt950 アウイナイト 0.24ct・ダイヤモンド0.18ctリング 鑑別カード

[Available 5/18 10PM] [Colorful] Pt950 Hauyne 0.24ct / Diamond 0.18ct Ring with Certificate
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
Sold out German Apatite 3.1mm/0.100ct Loose Stone

German Apatite 3.1mm/0.100ct Loose Stone

Sold out K18YG コーンフラワーブルーサファイア 4.5mm/0.41ct・アウイナイト・パライバトルマリン リング

18K Yellow Gold Cornflower Blue Sapphire 4.5mm/0.41ct, Apatite, and Paraiba Tourmaline Ring

Sold out アウイナイト 0.074ctルース

Hauinite 0.074ct loose

Sold out ドイツ産アウイナイト 0.090ctルース

German Auchenite 0.090ct loose stone

Sold out アウイナイト 0.081ctルース

Hauinite 0.081ct loose
Sold out ドイツ産アウイナイト 0.093ctルース

German Awinite 0.093ct loose stone
Sold out ドイツ産アウイナイト 0.119ctルース

German Awinite 0.119ct loose stone
Sold out ドイツ産アウイナイト 0.129ctルース

German Awinite 0.129ct loose stone
Sold out アフガニスタン産アウイナイト 0.152ctルース

Afghanistan Awinite 0.152ct loose stone JTL catalog

Sold out アフガニスタン産アウイナイト 0.103ctルース

Afghanistan Awinite 0.103ct loose stone JTL catalog

Sold out アウイナイト 0.064ctルース

German Awinite 2.7mm/0.064ct loose stone
Sold out Pt950ブラジル産パライバトルマリン0.201 ペンダント（ネックレス）

Pt950 Brazilian Paraiba Tourmaline 0.201ct Pendant (Necklace)
Sold out German Awinite 0.064ct loose stone

German Awinite 0.064ct loose stone
Sold out アウイナイト 0.065ctルース

Hauinite 0.065ct loose

Sold out ドイツ産アウイナイト 0.122ctルース

[5/5 10 PM Sale] German Hauyne 0.122ct Loose Stone
Sold out German Auchenite 0.083ct loose stone

German Auchenite 0.083ct loose stone
Sold out ドイツ産アウイナイト 0.084ctルース

German Awinite 0.084ct loose stone
Sold out アフガニスタン産アウイナイト 0.059ctルース

Afghanistan Awinite 0.059ct loose stone JTL catalog

Sold out アウイナイト 0.093ctルース

German Awinite 0.093ct loose stone
Sold out アフガニスタン産グリーンアウイナイト 0.098ctルース

Afghanistan Green Awynite 0.098ct Loose Stone
Sold out アウイナイト 0.188ctルース

Hauinite 0.188ct loose

Sold out アウイナイト 2.5mm/0.080ctルース

Auinite 2.5mm/0.080ct loose

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.