![Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/products/collage_6be597c0-338c-4671-838a-8b1e66598b68.jpg?v=1681976274&width=4000)
![[On sale November 8th at 10pm] Limited to 8 stones: Synthetic Alexandrite Loose Stone (Custom cut by Mr. Sanjay, Shield cut, Octagonal cut, etc.) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_f39b4280-e930-40c9-acc6-afe7cbefab9e.png?v=1762563420&width=2250)
Synthetic Moissanite 8.417ct Loose Stone
Sale price¥49,800
Synthetic moissanite (gray blue) 1.701ct loose
Sale price¥29,800
Synthetic moissanite 0.372ct loose
Sale price¥9,800
![[Limited to 4 stones] Synthetic moissanite 1 stone loose (rose cut, 5.0mm) [Discount available for multiple purchases]](http://store.karatz.jp/cdn/shop/files/P1260004.jpg?v=1706272442&width=4000)
Synthetic Moissanite 0.970ct Loose Stone (Blue Moissanite)
Sale price¥16,800
Synthetic Moissanite 4.924ct loose stone
Sale price¥39,800
Synthetic Moissanite 8.931ct loose stone
Sale price¥55,800
Synthetic Moissanite 7.999ct loose stone
Sale price¥39,800
Synthetic Moissanite 8.679ct loose stone
Sale price¥39,800
Synthetic Opal 1.804ct Loose
Sale price¥14,800
Synthetic Moissanite 6.0mm/0.688ct Loose Stone
Sale price¥9,800
Synthetic Moissanite 0.634ct loose stone
Sale price¥9,800
Synthetic Moissanite 5.8mm/0.682ct Loose Stone
Sale price¥9,800
Synthetic Moissanite 5.8mm/0.678ct Loose Stone
Sale price¥9,800
Synthetic Alexandrite 0.471ct loose stone
Sale price¥14,800
Synthetic Alexandrite 0.287ct loose stone
Sale price¥8,800
Synthetic Moissanite 11.7mm/5.570ct Loose Stone (Portuguese Cut)
Sale price¥29,800
Synthetic Alexandrite 0.287ct loose stone
Sale price¥8,800
Synthetic Alexandrite 0.841ct loose stone
Sale price¥15,800
Synthetic Alexandrite 0.578ct loose stone
Sale price¥12,800
Synthetic Moissanite 10mm/4.121ct Loose Stone (Portuguese Cut)
Sale price¥19,800
Synthetic Opal (Synthetic Black Opal) 0.651ct Loose
Sale price¥15,800
Synthetic Opal (Synthetic Black Opal) 0.723ct Loose
Sale price¥15,800
Synthetic Moissanite 10mm/4.147ct Loose Stone
Sale price¥16,800
Synthetic Opal (Synthetic Black Opal) 1.532ct Loose
Sale price¥15,800
Synthetic Opal (Synthetic Black Opal) 10.910ct Loose
Sale price¥69,800
Synthetic Opal (Synthetic Black Opal) 1.467ct Loose
Sale price¥12,800
Synthetic Alexandrite 0.282ct loose stone
Sale price¥9,800
Synthetic Alexandrite 0.502ct loose stone
Sale price¥15,800
Synthetic Alexandrite 0.330ct loose stone
Sale price¥9,800
Synthetic Moissanite 5.9mm/0.651ct Loose Stone
Sale price¥9,800
Synthetic Moissanite 5.9mm/0.648ct Loose Stone
Sale price¥9,800
Synthetic Moissanite 10mm/4.342ct Loose Stone
Sale price¥18,800
Synthetic Moissanite 1.186ct loose stone
Sale price¥12,800
Synthetic Moissanite 1.186ct loose stone
Sale price¥12,800
Synthetic black opal 1.209ct loose stone
Sale price¥18,800
Synthetic black opal 2.996ct loose stone
Sale price¥29,800
Synthetic Black Opal 5.013ct Loose
Sale price¥59,800
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.
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.