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blue sapphire

Blue sapphire can be said to be the representative of blue gemstones.
Sapphires come in a wide variety of colors and come in many shades, but when they are simply referred to as "sapphires", they refer to blue sapphires.
It is a jewel that has been loved by the British royal family, including the engagement ring of the late Princess Diana.
The most valuable colors are cornflower blue and royal blue.
Sapphire is the birthstone for September.

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Sold out Limited to 19 stones: Blue sapphire from Madagascar (medium blue, oval cut) Discounts available for multiple purchases
Sold out Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)
Sold out Sapphire Gacha where you can win a Cornflower Blue Sapphire with AIGS certificate 💎 Comes with a trillion sapphire as a bonus gift《Multiple purchase discount available》
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》
Sold out [On sale August 1 at 10 PM] Limited 10 Stones: Sapphire Gacha (including unheated cornflower blue sapphires, normally ¥69,800), with a bonus Sange sapphire. Multiple purchase discount available.
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)
Sold out スリランカ産ブルーサファイア 0.680ctルース
Sold out K18WG ブルーサファイア パライバトルマリン、アクアマリン、エメラルド、アイスブルーダイヤモンド(トリートメント)、ブルーサファイア、イエローサファイア、アパタイト、ペリドット、タンザナイト、ブルートパーズリング鑑別書
Sold out 【9/14 22時販売】【カラフリ】Pt900 ロイヤルブルーサファイア 0.361ct・ダイヤモンド0.86ctリング鑑別書 
Sold out 合成サファイア 1.791ctルース
Sold out マダガスカル産ロイヤルブルーサファイア 0.623ctルース 鑑別書
Sold out ブルーサファイア 0.176ctルース
Sold out ブルーサファイア 0.148ctルース
Sold out マダガスカル産ロイヤルブルーサファイア 0.559ctルース
Sold out スリランカ産ブルーサファイア 0.566ctルース 日独鑑
Sold out マダガスカル産非加熱ロイヤルブルーサファイア 1.030ctルース
Sold out Pt900 ブルーサファイア 0.52ct・ダイヤモンド0.19ctペンダントトップ(ネックレストップ)鑑別書
Sold out スリランカ産ブルーサファイア 0.269ctルース
Sold out マダガスカル産ブルーサファイア 0.406ctルース
Sold out K14WG ブルーサファイア 0.22ctct ペンダント(ネックレス)
Sold out 【22602565掲載】K18 ブルーサファイア リング
Sold out スリランカ産ブルーサファイア 0.826ctルース
Sold out Loose 0.264ct Sri Lankan Blue Sapphire

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.