![[Sold at 10 PM on September 7th] [Koshu Precious Stone Cut Glass] 18K Rose Quartz 15.964ct Necklace by Nikko Kan](http://store.karatz.jp/cdn/shop/files/collage_d84ee95a-a8cb-4c55-ad00-cb80887f2365.png?v=1757162335&width=2000)
![[Sold at 10 PM on September 7th] Pt900 Brazilian Swiss Blue Topaz 0.41ct Cat Cut Earrings](http://store.karatz.jp/cdn/shop/files/collage_b0e69240-6053-4a80-91cb-b76080613627.png?v=1757161767&width=2000)
![[Available at 10 PM on September 6th] Limited to 10 Blue Spinel Gacha - Includes 2 Cobalt Spinel (including color-shifted type) with Japanese and German appraisal certificates - Bonus Synthetic Cobalt Spinel (Multiple purchase discounts available)](http://store.karatz.jp/cdn/shop/files/collage_0e14cf1f-22a1-48b4-9f54-7e65505f2def.png?v=1757143868&width=2000)
[On sale at 10pm on September 18th] 1.476ct loose sphalerite from Spain
Sale price¥29,800
[On Sale at 10 PM on September 19th] Colombian Emerald 0.101ct Loose
Sale price¥15,800
[Sold at 10 PM on September 19th] Blue Sapphire 4.0mm/0.314ct Loose
Sale price¥112,800
Zimbabwean Bicolor Euclase 0.183ct Loose Stone
Sale price¥49,800
![[On sale at 10 PM on September 6th] Limited to 8 stones: Kite cut loose stone (Illusion Sunstone, Sapphire, Emerald, Spessartine Garnet, etc.) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_8c850970-c583-472d-8dd5-c539c04f5dbb.png?v=1756979760&width=2000)
![[On Sale at 10 PM on September 5th] [Limited to 7 stones] One loose, oil-free emerald from Russia (1.6-1.7mm, princess cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010159_ecbbab61-43da-45d3-aec5-d55f86bceafd.jpg?v=1756978823&width=3465)
![[Available at 10 PM on September 6th] Limited to 4 stones: One loose pink sapphire (pear shape) from Madagascar [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_e2884259-69c4-4a1e-8a04-94b7e0aa4d98.png?v=1756979238&width=2000)
![[On sale September 6th at 10 PM] [Limited to 7 stones] Madagascar sapphire, 1 loose stone (long hexagonal cut, approximately 5 x 3 mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010164.jpg?v=1756867626&width=4000)
![[On sale September 5th at 10 PM] Limited to 20 stones: Russian Demantoid Garnet (Horsetail inclusions, approximately 2mm) Loose Stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010052_5323a44e-e18e-4219-94e5-7d7bb0ecab84.jpg?v=1756867452&width=4000)
![[On sale September 5th at 10 PM] [Only one left] Russian Demantoid Garnet Loose Stone (Oval Cut, Approx. 3 x 2mm) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/S__218431492_56620792-286c-4261-91b5-7c3159b666aa.jpg?v=1756867553&width=1280)
![[On Sale at 10 PM on September 5th] Pt950 Myanmar Gray Spinel (Platinum Spinel) 5.5mm/0.685ct Black Diamond Ring](http://store.karatz.jp/cdn/shop/files/collage_9d2c63d9-eb14-4afd-9368-cacc817cec80.png?v=1756858734&width=2000)
Star spinel 1.210ct loose
Sale price¥15,800
Fire Opal 2 Stone Pair 4mm/0.336ct Loose
Sale price¥3,980
Oligoclase Sunstone 26.660ct rough stone
Sale price¥15,800
Red beryl 0.109ct loose
Sale price¥18,800
Red beryl 0.098ct loose
Sale price¥18,800
Montebrasite 4.1mm 2 stone pair loose (green)
Sale price¥6,980
[Posted 12529980] Paraiba tourmaline from Brazil 1.649ct loose
Sale price¥18,800
Brazilian Paraiba tourmaline in quartz 4.070ct loose
Sale price¥12,800
Particolor tourmaline 24.147ct loose
Sale price¥49,800
Emerald 15.219ct loose Japanese-German book
Sale price¥298,000
Aragonite 2.088ct loose Japanese-German book
Sale price¥25,800
Bicolor Sphene 4.50ct loose
Sale price¥258,000
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.