Tanzanite 4.940ct rough stone
Sale price¥3,980
![[On sale at 10 PM on September 5th] [Limited to 3 stones] Brazilian Elestial Amethyst (1 loose stone, 3.5-3.9mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_a4907829-a1ef-40d2-ae34-572edef35c78.png?v=1756866168&width=2000)
![[On Sale at 10 PM on September 5th] [Limited to 6 stones] 1 Unheated Sri Lankan Sapphire Loose with Silk Inclusions (Average 0.31ct) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/P1010278.jpg?v=1756866383&width=4000)
![[On sale at 10 PM on September 5th] Limited to 10 stones: One Saint-Jay cut amethyst (5.0-5.5mm, special cut round) loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010004_fc3d5eba-9590-4a99-adb5-34ab662d33d3.jpg?v=1756867308&width=4000)
![[Available at 10 PM on August 30th] Limited to 8 stones: One loose Brazilian rainbow aquamarine (average 0.9 carat, pear cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_9316de3e-a74f-47cf-b228-cb256a0050fc.png?v=1756458978&width=2000)
Purple sapphire 0.220ct loose
Sale price¥3,980
Purple sapphire 0.240ct loose
Sale price¥4,980
Sphene 0.590ct loose
Sale price¥3,980
Goethite in quartz 1.020ct loose
Sale price¥2,980
Rose quartz 15mm/10.950ct loose
Sale price¥3,980
Rose quartz 15mm/10.850ct loose
Sale price¥3,980
![[Available at 10 PM on August 24th] Limited to 12 stones: Madagascar Sapphirine (Sapphirine) Loose Stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010371_a123a6b4-46a8-4394-9eac-427d8a3707ec.jpg?v=1755996019&width=4000)
![[Available at 10 PM on August 23rd] Limited to 3 stones: Indian Andesine and Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010023.jpg?v=1755868377&width=4000)
Fluorite 1.420ct loose stone
Sale price¥3,980
Hessonite Garnet 0.309ct Loose Stone
Sale price¥4,980
Brazilian citrine 1.337ct loose stone
Sale price¥3,980
![[Available at 10 PM on August 10th] Limited Quantity: Brazilian Yellow Danburite Loose Stone [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/P1010296_93b18168-adac-4046-a787-5526f00e9467.jpg?v=1755047677&width=4000)
![[Available at 10 PM on August 9th] Limited Quantity: 1.5mm Pink Spinel from Myanmar (including Hot Pink Spinel) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/P1010178_cfebbbd9-0116-4cc1-be32-c12acb39a6ea.jpg?v=1754628360&width=4000)
Prehnite 0.818ct loose stone
Sale price¥3,980
Synthetic Moissanite 0.358ct loose stone
Sale price¥3,980
Synthetic Moissanite 0.491ct loose stone
Sale price¥4,980
Montana Sapphire 1.9mm/0.033ct loose
Sale price¥4,980
Labradorite 6mm/0.741ct loose (rose cut)
Sale price¥3,980
Brazilian rainbow scapolite 3mm/0.133ct loose (rose cut)
Sale price¥3,980
Andalusite from Sri Lanka 0.408ct loose
Sale price¥3,980
Andalusite from Sri Lanka 0.361ct loose
Sale price¥3,980
[12541081 published] Emerald 9.380ct rough stone
Sale price¥4,980
Cornel pin cat's eye 0.422ct loose
Sale price¥2,980
Cornel pin cat's eye 0.657ct loose
Sale price¥3,980
![[Available at 10 PM on August 2nd] [Limited to 5 stones] Brazilian Rhodonite in Quartz (Faceted Cut) - 1 stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010036_ee59870c-747b-4c6f-8edb-fbfff46f61ae.jpg?v=1754194744&width=4000)
Myanmar Purple Spinel 0.312ct Loose Stone
Sale price¥3,980
Mexican cantera opal 8.454ct loose
Sale price¥3,980
![[Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges](http://store.karatz.jp/cdn/shop/files/1_5a75b2c0-74f1-4382-ab20-f2df8b91fb77.png?v=1753776085&width=1080)
![[Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges](http://store.karatz.jp/cdn/shop/files/1_110c1f46-fe62-4d98-b010-3afc05a4bbb1.png?v=1753775636&width=1080)
Green tourmaline 0.305ct loose stone
Sale price¥3,980
Diaspore 0.660ct loose
Sale price¥3,980
Diaspore 0.657ct loose
Sale price¥3,980
Diaspore 0.672ct loose
Sale price¥3,980
Myanmar Maw Sisit 0.855ct loose stone (Maw Sisit)
Sale price¥4,980
Cambodian blue zircon 0.232ct loose stone
Sale price¥4,980
Australian boulder opal 1.026ct loose
Sale price¥3,980
![[Sales start on Friday, August 22nd at 10:00 PM] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges (8 types in total)](http://store.karatz.jp/cdn/shop/files/2_b6b9535f-4ba7-4b6d-aa24-653f73757ecc.png?v=1755675367&width=1080)
Indian Labradorite 6mm/0.733ct Loose Stone (Rose Cut)
Sale price¥2,980
Indian Labradorite 6mm/0.769ct loose stone (rose cut)
Sale price¥2,980
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.