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パパラチアサファイア 0.560ctルース

[On sale May 31st, 10 PM] Madagascar Padparadscha Sapphire 5.0mm/0.560ct Loose Stone AIGS Sale price¥89,800
非加熱ブラジル産パライバトルマリン 0.110ctルース

Unheated Brazilian Paraiba tourmaline 0.110ct loose AIGS Sale price¥258,000
Unheated Pigeon Blood Ruby 0.380ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 0.380ct Loose Stone AIGS Sale price¥79,800
Unheated Pigeon Blood Ruby 5.0mm/0.520ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 5.0mm/0.520ct Loose Stone AIGS Sale price¥128,000
Unheated Pigeon Blood Ruby from Myanmar, 0.640ct Loose, AIGS

Unheated Pigeon Blood Ruby from Myanmar, 0.640ct Loose, AIGS Sale price¥258,000
ピジョンブラッドルビー 0.290ctルース

Pigeon Blood Ruby 4.0mm/0.290ct Loose Stone AIGS Sale price¥59,800
ロイヤルブルーサファイア 2.220ctルース

Royal Blue Sapphire 2.220ct Loose Stone AIGS Sale price¥458,000
coming soon [Available 6/XX at 10 PM] Limited 12 Stones: Cornflower Blue Sapphire Gacha 💎 Comes with a Trillion Cut Sapphire Bonus! (Multiple purchase discount available)

[Available 6/XX at 10 PM] Limited 12 Stones: Cornflower Blue Sapphire Gacha 💎 Comes with a Trillion Cut Sapphire Bonus! (Multiple purchase discount available) Sale price¥3,980
Sold out Unheated Pigeon Blood Ruby 0.260ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 0.260ct Loose Stone AIGS
Sold out Limited to 10 stones! Pigeon Blood Ruby (normally priced at 39,800 yen) Red Gemstone Gacha with AIGS Certificate (Multiple purchase discounts available)

Limited to 10 stones! Pigeon Blood Ruby (normally priced at 39,800 yen) Red Gemstone Gacha with AIGS Certificate (Multiple purchase discounts available)

Sold out K18PG Thai Pigeon Blood Ruby 0.38ct Ring AIGS

K18PG Thai Pigeon Blood Ruby 0.38ct Ring AIGS
Sold out Tanzanite from Tanzania 4.5mm/0.390ct Loose Stone AIGS

Tanzanite from Tanzania 4.5mm/0.390ct Loose Stone AIGS
Sold out Cornflower Blue Sapphire 0.370ct Loose AIGS

Cornflower Blue Sapphire 0.370ct Loose AIGS
Sold out Pigeon blood ruby ​​0.310ct loose

Pigeon blood ruby ​​0.310ct loose
Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS

Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS
Sold out 《Limited to 16 stones》Cornflower Blue Sapphire with AIGS certificate, Royal Blue Sapphire with certificate, (Plus a beautiful yellow sapphire worth 5,980 yen as a bonus) 💎Blue Sapphire Gacha 《Multiple purchase discount available》

《Limited to 16 stones》Cornflower Blue Sapphire with AIGS certificate, Royal Blue Sapphire with certificate, (Plus a beautiful yellow sapphire worth 5,980 yen as a bonus) 💎Blue Sapphire Gacha 《Multiple purchase discount available》
Sold out Unheated Blue Sapphire from Madagascar, 1.380ct Loose, AIGS

Unheated Blue Sapphire from Madagascar, 1.380ct Loose, AIGS

Sold out Cornflower Blue Sapphire 0.680ct Loose AIGS

Cornflower Blue Sapphire 0.680ct Loose AIGS
Sold out Cornflower Blue Sapphire 4.5mm/0.430ct Loose Stone AIGS

Cornflower Blue Sapphire 4.5mm/0.430ct Loose Stone AIGS
Sold out Royal Blue Sapphire 1.00ct Loose AIGS

Royal Blue Sapphire 1.00ct Loose AIGS

Sold out Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS
Sold out Red Gemstone Gacha including Pigeon Blood Ruby AIGS worth ¥60,000 💎 Ruby and Hot Pink Sapphire (Multiple Purchase Discounts Available)

Red Gemstone Gacha including Pigeon Blood Ruby AIGS worth ¥60,000 💎 Ruby and Hot Pink Sapphire (Multiple Purchase Discounts Available)
Sold out Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)

Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)
Sold out Ruby Lottery: Win a 0.59ct Pigeon Blood Ruby with AIGS or a Burmese Star Ruby (Multiple Purchase Discounts Available)

Ruby Lottery: Win a 0.59ct Pigeon Blood Ruby with AIGS or a Burmese Star Ruby (Multiple Purchase Discounts Available)
Sold out 非加熱ロイヤルブルーサファイア 0.640ctルース AIGS

Unheated Royal Blue Sapphire 0.640ct Loose AIGS

Sold out ピジョンブラッドルビー 3.7mm/0.230ctルース AIGS

Pigeon Blood Ruby 3.7mm/0.230ct Loose Stone AIGS

Sold out Blue Sapphire Gacha Set Includes Two Unheated Royal Blue Sapphires (with AIGS Certificate) (Plus One Sapphire from the Teppanawa Mine) (Multiple Purchase Discounts Available)

Blue Sapphire Gacha Set Includes Two Unheated Royal Blue Sapphires (with AIGS Certificate) (Plus One Sapphire from the Teppanawa Mine) (Multiple Purchase Discounts Available)
Sold out コーンフラワーブルーサファイア 0.530ctルース AIGS

Cornflower Blue Sapphire 0.530ct Loose AIGS
Sold out K18PG ピジョンブラッドルビー 0.4ct ペンダントトップ（ネックレストップ）

AIGS 18K Gold Plated Pigeon Blood Ruby 0.4ct Pendant (Necklace)

Sold out ピジョンブラッドルビー 0.28ct リング AIGS

Pigeon Blood Ruby 0.28ct Ring AIGS

Sold out コーンフラワーブルーサファイア 0.480ctルース

Cornflower Blue Sapphire 4.5mm/0.480ct Loose Stone AIGS
Sold out タイ産ピジョンブラッドルビー 0.380ctルース

Thai Pigeon Blood Ruby 0.380ct Loose AIGS
Sold out Cornflower Blue Sapphire 4.9mm/0.55ct Loose AIGS

Cornflower Blue Sapphire 4.9mm/0.55ct Loose AIGS
Sold out ロイヤルブルーサファイア 1.980ctルース　AIGS

Royal Blue Sapphire 1.980ct Loose AIGS

Sold out 非加熱ロイヤルブルーサファイア 0.360ctルース AIGS

Unheated Royal Blue Sapphire 0.360ct Loose AIGS

Sold out 非加熱コーンフラワーブルーサファイア 0.360ctルース AIGS

Unheated Cornflower Blue Sapphire 0.360ct Loose AIGS

Sold out 非加熱ルビー 0.330ルース

Unheated Ruby 0.330ct Loose AIGS
Sold out Pigeon Blood Ruby 0.38ct Loose AIGS

Pigeon Blood Ruby 0.38ct Loose AIGS

coming soon サファイア 1.182ctルース

Royal Blue Sapphire 1.182ct Loose (Calfshead) AIGS Sale price¥98,000
Sold out コーンフラワーブルーサファイア 1.080ctルース

Cornflower Blue Sapphire 1.080ct Loose AIGS

Sold out ルビー 0.295ctルース

Pigeon Blood Ruby 0.295ct Loose AIGS
Sold out ロイヤルブルーサファイア 1.420ctルース

Royal blue sapphire 1.420ct loose AIGS

Sold out コーンフラワーブルーサファイア 4.8mm/0.690ctルース AIGS

Cornflower Blue Sapphire 4.8mm/0.690ct Loose AIGS

Sold out コーンフラワーブルーサファイア 0.910ctルース AIGS

Cornflower blue sapphire 0.910ct loose AIGS

Sold out モザンビーク産非加熱ピジョンブラッドルビー 0.460ctルース

Unheated pigeon blood ruby ​​from Mozambique 0.460ct loose AIGS

Sold out ピジョンブラッドルビー 0.200ctルース

Pigeon blood ruby ​​0.200ct loose AIGS

Sold out 非加熱ピジョンブラッドルビー 0.530ctルース

Unheated Pigeon Blood Ruby 0.530ct Loose AIGS

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.