![[Sales start April 3rd, 10 PM JST] Tucson Arrivals - Limited to 8 Stones - Australian Black Opal Loose Stone (Lightning Ridge) - Multiple Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/collage_6089265f-5549-4e86-aa51-cd7a5eaf9192.png?v=1774961189&width=2250)
【4/25 22時販売】メキシコ産カンテラオパール 17.284ctルース
Sale price¥39,800
【4/29 22時販売】メキシコ産カンテラオパール 7.520ctルース 鑑別書
Sale price¥24,800
【4/29 22時販売】メキシコ産カンテラオパール 5.811ctルース 鑑別書
Sale price¥29,800
Ethiopian honeycomb opal 3.566ct loose stone
Sale price¥46,800
Ethiopian Opal 2.131ct Loose
Sale price¥9,800
Ethiopian Opal 1.694ct Loose
Sale price¥7,980
Mexican Hyalite Opal 0.774ct Loose (Faceted Cut)
Sale price¥8,800
![[On sale April 18th at 10 PM] [Colorflee] Pt900 Cantera Opal 7.809ct / Diamond 0.19ct Pendant Top (Necklace Top)](http://store.karatz.jp/cdn/shop/files/P4150010_8617efa7-e28e-4bd0-aa24-b934c5f2c848.jpg?v=1776343342&width=2930)
[Listed as 12562808] Mexican Cantera Opal 5.410ct Loose Stone
Sale price¥9,800
[Sale at 10 PM on April 16th] Mexican Cantera Opal 3.051 ct Loose Stone
Sale price¥18,800
[On sale April 16 at 10 PM] Mexican Cantera Opal 1.867 ct Loose Stone
Sale price¥12,800
1 green opal from Amazon《Discount available for multiple purchases》
Sale price¥2,980
![[Available at 10 PM on February 22nd] Limited to 10 Opals - Australian Opal Lottery with Certificate of Authenticity (including Australian Black Opal) (Plus 1 Mexican Fire Opal) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/2ce9f9727de9532a55237668af9f2b6d_e306074e-7564-4e5e-bc94-74959ab2a91e.png?v=1770790310&width=2000)
![Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/15_dc816088-689d-48f9-a277-773d85ed082c.png?v=1759454434&width=1500)
![[On sale March 28th, 10 PM JST] Tucson Arrivals - Limited to 28 Stones - Andamooka Black Matrix Opal (Carbonized) from Australia - 1 Loose Stone - Multiple Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/collage_b93b57c3-af69-46bb-90cb-f88a4f598598.png?v=1774512640&width=2250)
![[On sale March 28 at 10 PM] Tucson New Arrivals - Limited 18 pieces! 1 Peruvian Blue Opal stone (multi-item discount available)](http://store.karatz.jp/cdn/shop/files/collage_e4961544-4815-4e30-aa00-75fc2be2552c.png?v=1774510573&width=2250)
![[Available at 10 PM on February 22nd] Limited to 13 stones: Mexican Opal (Cabochon Cut) Gacha [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P2040462.jpg?v=1770978988&width=4000)
![[Available at 10 PM on March 8th] [New Arrivals in Tucson - Limited to 13 Stones] Mexican Opals, including imperfect pieces (including egg-in and water opals) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010530_f3d6178b-1412-47cf-99ef-bb8097b962d0.jpg?v=1772921775&width=4000)
Mexican Hyalite Opal 2.592ct loose
Sale price¥9,800
Mexican Fire Opal 1.833ct Loose
Sale price¥39,800
Mexican Fire Opal 1.424ct Loose
Sale price¥39,800
Mexican Fire Opal 2.235ct Loose
Sale price¥19,800
Mexican Fire Opal 1.743ct Loose
Sale price¥18,800
Mexican Fire Opal 3.425ct Loose
Sale price¥22,800
Mexican Cantera Opal 15.195ct Loose
Sale price¥12,800
Mexican Opal 0.502ct Loose (Faceted Cut)
Sale price¥9,800
Australian black opal 2.277ct loose stone (play of color on both sides)
Sale price¥34,800
Mexican egg-in-opal 0.865ct loose stone
Sale price¥12,800
Mexican egg-in-opal 0.672ct loose stone
Sale price¥11,000
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.