[Sales start 4/5 10 PM] Madagascar Apatite 19.863ct Loose Gemstone
Sale price¥128,000
[On sale April 5 at 10 PM] Pt950 Ice Blue Diamond Ring
Sale price¥158,000
[On sale April 4th, 10 PM JST] Pt950 Ice Blue Diamond (Treated) 0.197ct Ring
Sale price¥128,000
【On Sale April 4 at 10 PM】Brazilian Morganite 11mm/5.181ct Loose Stone
Sale price¥158,000
[On Sale April 4th at 10 PM] Brazilian Morganite 10mm/4.535ct Loose Stone
Sale price¥148,000
[12551250] Brazilian oil-free emerald 0.120ct loose stone
Sale price¥110,000
Solo (Simple Order Ring Frame)
Sale priceFrom ¥79,800
Andromeda "Semi-custom pendant frame and chain integrated"
Sale price¥105,800
Duo (Simple Order Ring Frame)
Sale price¥105,800
![[On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ Collaboration Jewelry Demon Hand Pendant](http://store.karatz.jp/cdn/shop/files/5df0d1811d08c713ce16794e8cfaae33.jpg?v=1761110502&width=4500)
![[On sale from 10 PM on Monday, March 30th] Anime "Overlord" x Jewelry Specialty Store KARATZ Collaboration Ring of Ainz Ooal Gown (Limited Quantity)](http://store.karatz.jp/cdn/shop/files/K18_ff65688b-7832-4b83-bbfe-a2fc9ccd31ca.jpg?v=1773239243&width=4500)
![[Sales start at 10 PM on Saturday, March 14th] Anime "Assassination Classroom" x KARATZ Collaboration Korosensei Five Great Jewels Figure (Limited to 100 units)](http://store.karatz.jp/cdn/shop/files/ansatsu_bnrC_1_1080x1080_1be8ed3d-7a10-47a1-9508-85a22ed9b825.jpg?v=1760620266&width=1080)
![[On sale from 10 PM on Monday, March 30th] Anime "Overlord" x Jewelry Specialty Store KARATZ Collaboration Albedo "Bardiche" Object (Limited Quantity)](http://store.karatz.jp/cdn/shop/files/5a09df31545a39674f87587e2f29c899.jpg?v=1772582921&width=4500)
![[Sales start at 11:00 AM on Friday, March 13th] Anime "Hell Teacher Nube" x Jewelry Specialty Store KARATZ Collaboration "Demon Hand Figure" Silver Model (Limited to 24 pieces)](http://store.karatz.jp/cdn/shop/files/8b37df37905d747c69081097556f9eb5.jpg?v=1772776412&width=4500)
Brazilian Paraiba Tourmaline Ring and Half Eternity Ring Set (1.2mm)
Sale price¥198,000
![[On sale from 10 PM on Monday, March 30th] Anime "Overlord" x Jewelry Specialty Store KARATZ Collaboration Shalltear [Spoiler Trance] Object (Limited Quantity)](http://store.karatz.jp/cdn/shop/files/0d4bfeb61dc9b7b41b61c8f05f03a692.jpg?v=1772583550&width=4500)
Ainsel "Semi-custom ring setting"
Sale price¥178,000
18K Yellow Gold Colombian Emerald Ring
Sale price¥128,000
18K Yellow Gold Ruby Ring (Pigeon Blood Color)
Sale price¥128,000
Unheated Bicolor Paraiba Tourmaline 0.092ct Loose GIA
Sale price¥188,000
South African rhodochrosite 2.477ct loose Japanese-German edition
Sale price¥398,000
Bicolor Paraiba tourmaline 2.477ct loose DGL version
Sale price¥298,000
![[On Sale 3/7 at 10pm] Zimbabwe Green Diamond Rough (Sawable) 0.428ct Rough with Trigon](http://store.karatz.jp/cdn/shop/files/P1210028_8b78668d-0ccf-41ed-b512-a778be22b5c8.jpg?v=1772575933&width=2764)
![[On sale 3/7 at 10pm] South African Rhodochrosite 1.820ct Loose Stone](http://store.karatz.jp/cdn/shop/files/20260201_P2047493_3ee24cfb-4307-4b29-a821-5473292118cd.jpg?v=1771020392&width=3135)
[On sale 3/7 at 10pm] South African Rhodochrosite 1.820ct Loose Stone
Sale price¥128,000
![[On Sale 2/23 at 10 PM] Russian Demantoid Garnet (Horsetail Certified) 5.8mm/0.851ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1231994_fde71275-86c7-431d-a49d-19d9a7265952.jpg?v=1771722751&width=3137)
![[On Sale 2/23 10pm] Zimbabwe Green Diamond Rough (Sawable) 0.402ct Rough with Trigon](http://store.karatz.jp/cdn/shop/files/P1210062_bb06fe90-b517-4a19-bfce-ca8a9e31cdfe.jpg?v=1771722369&width=4000)
Pt900 benitoite 0.135ct/diamond ring
Sale price¥128,000
Pt900 benitoite 0.152ct/diamond 0.58ct ring
Sale price¥198,000
Colombian trapiche emerald 13.466ct loose
Sale price¥398,000
![[On Sale 2/11 at 10 PM] Russian Demantoid Garnet (Horsetail Certified) 5.1mm/0.664ct Loose Stone](http://store.karatz.jp/cdn/shop/files/20260201_P2047804.jpg?v=1770679177&width=4000)
![[On Sale 2/8 at 10pm] 8.338ct Oregon Sunstone Loose Stone from the USA](http://store.karatz.jp/cdn/shop/files/P9090730_31cd7167-f869-475d-b06d-e42d8f77bf7b.jpg?v=1770416904&width=3102)
[On Sale 2/8 at 10pm] 8.338ct Oregon Sunstone Loose Stone from the USA
Sale price¥158,000
![[On Sale 2/8 at 10 PM] Canadian Green Diamond Rough (Sawable) 0.338ct Rough (with Trigon)](http://store.karatz.jp/cdn/shop/files/P1190545.jpg?v=1770415881&width=4000)
Angola Green Diamond Rough (Sawable) 0.528ct Rough (with Trigon)
Sale price¥198,000
Colombian oil-free emerald 0.220ct loose GIA
Sale price¥248,000
![[On Sale 2/6 at 10pm] Colombian Oil-Free Emerald 0.510ct Loose GIA](http://store.karatz.jp/cdn/shop/files/P6095155_97466828-4631-4e90-b4ca-7ff6f8853a18.jpg?v=1686868907&width=3464)
[On Sale 2/6 at 10pm] Colombian Oil-Free Emerald 0.510ct Loose GIA
Sale price¥598,000
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.