Birthstone list
![[On sale from 22:00 on 5/5] {3 stones remaining} Special cut gacha💎 Milky quartz (Yukinko cut), moonstone (dandelion cut), panda cut, etc. 1 stone {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/collage_c5c67f77-1c18-4f60-bcd5-109f7f2b3a7f.png?v=1746060210&width=2000)
![[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 4/20] Limited to 5 stones, 1 loose Mexican hyalite opal (average 0.5ct) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_e013a3d8-a888-4b9b-a0e2-59246ca0b07d.png?v=1745105671&width=2000)
![[On sale from 10pm on 5/4] {Limited to 13 stones} Gem gacha💎 Beautiful colored 7mm tanzanite, special cut sphene, and heliodor (lots of inclusions) 1 loose stone {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/collage_26f9aefd-0955-4b84-8991-538995587e77.png?v=1746149041&width=2000)
![[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] 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 5/17] {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)
![[On sale from 10pm on 4/20] {Limited to 3 stones} Gem gacha💎Black star sapphire (including 12-ray star) loose stone from Bangkacha, Thailand](http://store.karatz.jp/cdn/shop/files/collage_e3d0ca6e-fb48-4698-9645-3c8d965eae10.png?v=1745068013&width=4000)
![[On sale at 22:00 on 4/20] Sri Lankan bicolor sapphire 0.244ct loose stone](http://store.karatz.jp/cdn/shop/products/PC145795_41e6bac7-c247-47c0-8b12-9c8953f1e9b9.jpg?v=1743428271&width=3096)
![[On sale at 10pm on 4/20] Sri Lankan bicolor sapphire 0.193ct loose stone](http://store.karatz.jp/cdn/shop/products/42c731ca-f46c-46ed-9a64-7be750fab755.jpg?v=1654847752&width=2742)
![[On sale from 10pm on 4/20] Cornflower Blue Sapphire 4.9mm/0.55ct Loose AIGS](http://store.karatz.jp/cdn/shop/products/P3100232_015086ef-2812-4565-a514-f5fc4f9d7099.jpg?v=1743428258&width=3406)
[On sale from 10pm on 4/20] Cornflower Blue Sapphire 4.9mm/0.55ct Loose AIGS
Sale price¥110,000
![[On sale from 10pm on 4/20] Brazilian Paraiba Tourmaline 0.229ct loose stone (CuO: 0.6%, MnO: 1.0%)](http://store.karatz.jp/cdn/shop/files/P3316906.jpg?v=1745102518&width=3073)
![[On sale from 10pm on 4/21] Tanzanian bicolor sapphire 0.262ct loose stone](http://store.karatz.jp/cdn/shop/files/collage_b6eff37d-2671-4f08-bdc0-54b4e1686a0a.png?v=1745148604&width=2000)
![[On sale at 10pm on 4/22] Vietnam pink sapphire 1.690ct loose GIA](http://store.karatz.jp/cdn/shop/products/PA280060_7dc5b088-7740-4b56-a21e-1d805b075a08.jpg?v=1745241845&width=4000)
[On sale at 10pm on 4/22] Vietnam pink sapphire 1.690ct loose GIA
Sale price¥59,800
![[On sale from 10pm on 4/22] [Dandelion cut] Rhodolite Garnet 7mm/2.210ct [Collaboration] Loose Stone Patch](http://store.karatz.jp/cdn/shop/files/2210ct-986880.jpg?v=1745242567&width=1042)
![[On sale from 10pm on 4/22] Diamond 0.169ct loose stone (F, VS2)](http://store.karatz.jp/cdn/shop/files/P4010066_c8456f97-31ac-45bd-9df7-6fba8f056ab4.jpg?v=1745278793&width=4000)
[On sale from 10pm on 4/22] Diamond 0.169ct loose stone (F, VS2)
Sale price¥18,800
[On sale 4/23 at 10pm] Australian boulder opal 3.930ct loose
Sale price¥35,800
[On sale 4/23 at 10pm] Australian black opal 0.660ct loose
Sale price¥12,800
[On sale 5/3 at 22:00] Brazilian pink tourmaline 0.361ct loose stone
Sale price¥9,800
[On sale from 10pm on 5/3] Tanzanite from Tanzania 0.812ct loose stone
Sale price¥19,800
[On sale at 22:00 on 5/13] Bolivian Ametrine 3.751ct loose stone
Sale price¥9,800
[On sale 4/28 at 10pm] Brazilian Madeira Citrine 0.643ct Loose
Sale price¥8,800
[On sale 4/28 at 10pm] Brazilian Madeira Citrine 0.602ct Loose
Sale price¥8,800
[On sale 4/28 at 10pm] Brazilian Madeira Citrine 0.867ct loose stone
Sale price¥9,800
[On sale at 22:00 on 5/13] Brazilian aquamarine 0.578ct loose stone
Sale price¥12,800
[On sale at 22:00 on 5/13] Brazilian aquamarine 0.721ct loose stone
Sale price¥9,800
[On sale at 22:00 on 5/13] Brazilian aquamarine 0.362ct loose stone
Sale price¥8,800
[On sale at 22:00 on 5/13] Brazilian aquamarine 0.499ct loose stone
Sale price¥7,980
[On sale from 10pm on 5/4] Brazilian aquamarine 0.546ct 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.
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.
