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Windsor Sapphire

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【On sale 10/ 22:00】《Limited to 13 stones》Tanzania Winza Sapphire, average 0.29ct 《Multiple purchase discount available》

【On sale 10/ 22:00】《Limited to 13 stones》Tanzania Winza Sapphire, average 0.29ct 《Multiple purchase discount available》 Sale price¥5,980
タンザニア・ウィンザー産非加熱バイカラーサファイア 0.620ctルース

[Item 12564612] Unheated Bicolor Sapphire from Windsor, Tanzania, 0.620ct Loose Gemstone Sale price¥75,800
タンザニア・ウィンザー産非加熱バイカラーサファイア 0.500ctルース

【10/3 10 PM Release】Unheated Bicolor Sapphire from Winza, Tanzania 0.500ct Loose Gemstone with Identification Report Sale price¥59,800
タンザニア・ウィンザー産非加熱バイカラーサファイア 0.460ctルース 鑑別書

[Available 10/2 at 10 PM] Unheated Bicolor Sapphire from Winza, Tanzania, 0.460ct Loose Stone with Gem Identification Report Sale price¥59,800
タンザニア・ウィンザー産タンザニア産ウィンザーサファイア 0.277ctルース

【Available 9/6 at 10 PM】 Tanzanian Windsor Sapphire (Purple Sapphire) 0.277ct Loose Gemstone Sale price¥12,800
タンザニア産ウィンザーサファイア（カラーチェンジサファイア） 0.261ctルース

【9/12 22:00 Release】 Tanzanian Windsor Sapphire (Color Change Sapphire) 0.261ct Loose Gemstone Sale price¥9,800
タンザニア産ウィンザーサファイア 0.393ctルース

0.393ct Loose Tanzanian Windsor Sapphire (Purple Sapphire) with Gemstone Identification Report Sale price¥18,800
Sold out 《Limited to 14 stones》Windsor Sapphire Gacha 1 stone (bicolor, silky, color change, average 0.30ct) 《Multiple purchase discount available》

《Limited to 14 stones》Windsor Sapphire Gacha 1 stone (bicolor, silky, color change, average 0.30ct) 《Multiple purchase discount available》
Sold out Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]

Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]
Sold out Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]

Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]
Sold out タンザニア・ウィンザー産タンザニア産ウィンザーサファイア 0.272ctルース

Tanzania Winza Sapphire 0.272ct Loose Stone
Sold out タンザニア・ウィンザー産タンザニア産ウィンザーサファイア 0.282ctルース

[Available 9/6 at 10 PM] Tanzanian Windsor Sapphire (Purple Sapphire) 0.282ct Loose Stone
Sold out タンザニア・ウィンザー産タンザニア産ウィンザーサファイア 0.213ctルース

【Available 9/6 22:00】Tanzania Windsor Sapphire (Purple Sapphire) 0.213ct Loose Stone
Sold out タンザニア産ウィンザーサファイア 1.137ctルース

Tanzanian Windsor Sapphire (Brown Sapphire) 1.137ct Loose Stone with Gemstone Identification Report
Sold out 0.745ct loose bicolor sapphire from Windsor, Tanzania

0.745ct loose bicolor sapphire from Windsor, Tanzania

Sold out タンザニア・ウィンザー産バイカラーサファイア 1.030ctルース

Bicolor sapphire 1.030ct loose from Windsor, Tanzania

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.