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sapphire

Sapphire is the birthstone of September. Isn't this a gemstone that can be said to be the representative blue gemstone? However, there are actually many colors, including ``bicolor sapphire'' that exhibits two colors in one stone, ``color change sapphire'' that has a color change effect, and ``star sapphire'' that shows six lines when exposed to light. There are many types such as ``. It belongs to the same mineral corundum as ruby, and has high Mohs hardness and toughness, making it a gemstone that can be enjoyed as everyday jewelry.

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Pink sapphire 0.225ct loose Sale price¥6,980

Sold out 「起源がわかる 宝石大全」初版&宝石小瓶 2点セット
Sold out [Jeweler's Tools] {3 sets remaining} 3-piece set: Jewelry loupe (14x magnification), blue diamond, and pink tourmaline or sapphire
Sold out グリーンランド産アイスルビー 1石(ハートシェイプ,4mm,ピンクサファイア)《複数購入割引有》
Sold out 1 loose sapphire from Ratnapura, Sri Lanka (3.0mm-4.0mm, trilliant cut)《Multiple purchase discount available》
Sold out [On sale September 14th at 10 PM] {Only one left} Blue Sapphire Gacha includes two unheated royal blue sapphires (with AIGS certificate) (plus one Teppanawa Mine sapphire) {Multiple purchase discounts available}
Sold out [Limited to 6 stones] Sapphire Gacha💎 Tanzanian bicolor sapphire (including crescent sapphire, 3-4mm) [Multiple purchase discount available]
Sold out 非加熱ブルーサファイア 1.685ctルース
Sold out ブルーサファイア 0.244ctルース
Sold out スターサファイア 0.973ctルース
coming soon ピンクサファイア 0.176ctルース
Sold out ブルーサファイア 0.843ctルース
Sold out ブルーサファイア 1.141ctルース
Sold out マダガスカル産ブルーサファイア 4.7mm/0.522ctルース
coming soon パープルサファイア 0.943ctルース
Sold out カシミール産非加熱サファイア 0.080ctルース
Sold out サファイア 0.890ctルース
Sold out 【22602496掲載】Pt950 パープルサファイア 0.247ct ペンダントトップ(ネックレストップ)
Sold out パパラチアサファイア 0.228ctルース

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.