Diamond 0.618ct loose (I, I1, tree cut)
Sale price¥128,000
Bicolor Benitoite 0.067ct loose
Sale price¥25,800
![[On Sale] Limited to 15 Stones: Spinel & Friends Gacha - Musgravite, Taaffeite, Cobalt Garnite, and more. Bonus: 1 Platinum Spinel. Discounts available for multiple purchases.](http://store.karatz.jp/cdn/shop/files/collage_f5f33dc5-5eb0-473e-95ea-b3a1eaca4e19.png?v=1757146047&width=2000)
![[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 6th] [Limited to 6 stones] 1 loose unheated sapphire from Sri Lanka (average 0.77 carats) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010228_5399409f-afc5-4b03-b9cb-686160deb62e.jpg?v=1756866456&width=4000)
![[On sale at 10 PM on September 5th] [Limited to 6 stones] Tanzanian Bicolor Grossular Garnet (1 loose stone, average 0.55 carats) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010132.jpg?v=1756866630&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 31st] [Limited to 9 stones] Brazilian Rainbow Aquamarine Loose Stone (Average 1.0 carat, Pear Sheep Cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_a4d9bef3-5745-4730-8adf-5950e9068581.png?v=1756459860&width=2000)
![[Available at 10 PM on August 30th] Limited to 10 stones: Madagascar Sapphirine (Sapphirine) Loose Stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010321_de80d97b-aaa8-4f57-b4f7-655e79ff8b8e.jpg?v=1755939478&width=4000)
[12560287] 1.058ct Brazilian Elestial Amethyst Loose Stone
Sale price¥9,800
[12560281] Brazilian Elestial Amethyst 0.482ct Loose Stone
Sale price¥4,980
[12560280] 2.101ct Elestial Amethyst Loose Stone from Brazil
Sale price¥14,800
[12560279] Brazilian Elestial Amethyst 0.850ct Loose
Sale price¥8,800
[12560278] Brazilian Elestial Amethyst 1.008ct Loose Stone
Sale price¥8,800
[12560275] 3.093ct Elestial Amethyst Loose Stone from Brazil
Sale price¥19,800
[12560256] Zambian emerald 0.135ct loose stone
Sale price¥8,800
[12560255] Zambian emerald 0.119ct loose stone
Sale price¥12,800
[12560321] Brazilian pink tourmaline 0.234ct loose stone
Sale price¥8,800
[12560318] Congo pink tourmaline 0.798ct loose stone
Sale price¥25,800
[12560313] Brazilian Green Tourmaline 0.755ct Loose
Sale price¥18,800
[12560312] Brazilian Green Tourmaline 0.374ct Loose
Sale price¥9,800
Illusion Tourmaline (Iridescent Tourmaline) 1.356ct Loose Stone
Sale price¥39,800
[12560273] 2.353ct Elestial Amethyst Loose Stone from Brazil
Sale price¥15,800
[12560272] Brazilian Elestial Amethyst 1.461ct Loose
Sale price¥9,800
[12560266] Madagascar Apatite 0.610ct Loose Stone
Sale price¥9,800
[12560239] Pink sapphire 0.179ct loose stone
Sale price¥6,980
[Published on 12560228] Blue sapphire 0.266ct loose stone
Sale price¥8,800
[Published on 12560227] Blue sapphire 0.170ct loose stone
Sale price¥8,800
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.