![[On sale from 10pm on 5/28] Montana Sapphire 4mm/0.330ct Loose (Yellow Sapphire)](http://store.karatz.jp/cdn/shop/files/ken-4mm0330ct-713458_6c60ce64-fadb-4cc2-a6d9-ef4f6565cd72.jpg?v=1748425419&width=1008)
![[On sale from 10pm on 5/27] 0.077ct Moldavite loose stone from the former Czechoslovakia](http://store.karatz.jp/cdn/shop/files/P4157419_4fb82d51-19e5-46bb-b595-37bb3252249d.jpg?v=1748244374&width=2731)
[On sale from 10pm on 5/24] Amazon Green Opal 7mm/0.88ct Loose
Sale price¥7,980
[On sale from 10pm on 5/24] American axinite 2.10ct loose stone
Sale price¥9,800
[On sale from 10pm on 5/24] American Axinite 1.630ct loose stone
Sale price¥7,980
[On sale from 10pm on 5/23] Ethiopian Opal 1.521ct Loose
Sale price¥3,980
[On sale at 22:00 on 5/23] Ethiopian Opal 1.382ct Loose
Sale price¥3,980
[On sale from 10pm on 5/23] Ethiopian Opal 1.014ct Loose
Sale price¥3,980
[On sale from 10pm on 5/23] Tibetan Andesine 0.720ct loose stone
Sale price¥5,980
![[On sale from 10pm on 5/18] Limited to 9 stones, 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.5mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010238_6a648509-d222-4f5c-858c-0101029eb903.jpg?v=1747380750&width=4000)
![[On sale from 10pm on 5/18] Limited to 9 stones, 1 Santa Maria aquamarine from Brazil (round cut, approx. 3.2mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010210_a3b6fda8-3588-482a-93de-2f36da2401c0.jpg?v=1747380653&width=3272)
![[On sale from 10pm on 5/18] Limited to 25 stones, 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.0mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010164_5d2fcb3a-13f8-4ba8-baf1-2549f65c774b.jpg?v=1747379899&width=4000)
![[On sale from 10pm on 5/18] Limited to 11 stones, Brazilian rhodonite in quartz (cabochon, 7.5-8.5mm) 1 loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010140_44a7d2d4-e2b8-44ee-8660-1ae510a35ec1.jpg?v=1747379394&width=4000)
![[On sale from 10pm on 5/17] Nepalese Kyanite loose stone (indigo blue color, 4x6mm, oval cut) {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/P1010108_e562cc2c-e752-47d5-aa57-12fc61c64277.jpg?v=1747377959&width=4000)
[On sale from 10pm on 5/21] Blue sapphire 5.2mm/0.607ct loose stone
Sale price¥9,800
[On sale from 10pm on 5/18] Australian Opal 1.390ct Loose
Sale price¥9,800
[On sale at 10pm on 5/22] Tanzanian Violet Spinel 0.541ct Loose
Sale price¥9,800
![[On sale from 10pm on 5/17] {Limited to 8 stones} Jam Gacha💎 1 rainbow garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/2025-05-158.54.00.png?v=1747266901&width=1279)
![[On sale from 10pm on 5/17] {Limited to 9 stones} Gem gacha💎 April birthstone gacha: A gacha where you can win a fan-cut diamond with AGT sorting or a morganite {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/51400e18845f9eacfbebe0c87bafd79c.png?v=1747010770&width=960)
Black star sapphire 0.930ct loose
Sale price¥6,980
![[On sale from 10pm on 5/11] Limited quantity: Mozambique grape garnet, 1 loose stone (4x6mm, pear-shaped cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010054_74a1635b-18cb-400a-8463-144139f8df48.jpg?v=1746846465&width=4000)
![[On sale from 10pm on 5/11] Limited to 7 stones! Special May birthstone project💎 1 loose Colombian emerald cat's eye (highly transparent cat's eye) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_f993b3e2-2b58-4c11-a27e-e1f010302e90.png?v=1746844222&width=2000)
[On sale from 10pm on 5/11] Brazilian Morganite 0.633ct loose stone
Sale price¥9,800
[On sale from 10pm on 5/9] South African diamond 0.210ct rough stone
Sale price¥8,800
[On sale at 22:00 on 5/12] Blue sapphire 4.0mm/0.243ct loose stone
Sale price¥7,980
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.
The fifth reprint has been decided and is now on sale at bookstores nationwide and online.
Written by KARATZ, book “Jewelry Illustrated Book”
The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.
