Birthstone list
![[On Sale 3/7 at 10 PM] Limited Edition (36 stones) Brazilian Paraiba Tourmaline (Batalha Mine) Gacha 💎 Regular price: ¥45,800 (Includes sorting and unheated stones) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/2_87adc14c-7e61-42ee-9e05-2c7e2001346d.png?v=1771548558&width=1080)
![[Available at 10 PM on February 11th] [Limited to 14 stones] Rainbow Garnet from Tenkawa Village, Nara Prefecture (faceted by Saint-Jay) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P2040396.jpg?v=1770624269&width=4000)
![[On sale March 8th at 10 PM] Limited to 20 stones. Includes Russian demantoid garnets, normally priced at 69,800 yen. Discounts available for multiple purchases.](http://store.karatz.jp/cdn/shop/files/collage_ebd57432-8f66-4317-922c-d09e9bd0161d.png?v=1772593178&width=2250)
![[Available at 10 PM on February 15th] Limited Quantity Tucson Fun Gacha 💎 Guaranteed 1 Stone from 8 Types (Benitoite, Anthill Garnet, Dumortierite in Quartz, Eudierite, etc.) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/2026-02-1318.59.04.png?v=1770976872&width=1281)
![[On sale March 1st at 10 PM] 《Limited to 15 stones》 Topaz Gacha including 10ct of Koshu Cut Precious Stones, normally priced at 69,800 yen, and a Sherry-Colored Imperial Topaz 《Multiple purchase discounts available》](http://store.karatz.jp/cdn/shop/files/collage_25dfcc79-757d-4d01-be3f-b1cad5341816.png?v=1772196089&width=2250)
![[On sale March 7th at 10 PM] [Limited to 20 stones] Emerald gacha where you can win a 2.2ct Colombian emerald Koshu precious stone cut stone, normally 79,800 yen, or an emerald cat's eye. [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/52c80d510cb1d6f2ddbc402bf981a8a1.png?v=1772588294&width=1890)
![[Available at 10 PM on February 22nd] Limited to 10 Opals - Australian Opal Lottery with Certificate of Authenticity (including Australian Black Opal) (Plus 1 Mexican Fire Opal) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/2ce9f9727de9532a55237668af9f2b6d_e306074e-7564-4e5e-bc94-74959ab2a91e.png?v=1770790310&width=2000)
![[Available at 10 PM on March 1st] Limited to 21 stones! Dominican Republic Conch Pearl & Shell Gacha Loose Stone (including one with a flame pattern) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_a484a33d-75a6-40c5-a0ba-63bf757c7cca.png?v=1772195139&width=2250)
![[Available at 10 PM on February 22nd] Limited to 13 stones: Mexican Opal (Cabochon Cut) Gacha [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P2040462.jpg?v=1770978988&width=4000)
![[Available at 10 PM on 2/21] Limited to 9 stones. Includes Koshu Kiriko plus three citrine gacha, normally priced at 29,800 yen. Discounts available for multiple purchases.](http://store.karatz.jp/cdn/shop/files/collage_f751d37d-74a9-49f1-bd56-d8e34d4510e9.png?v=1771038872&width=2250)
![[Available at 10 PM on March 1st] Limited Edition 10 Diamonds! 💎 Includes a 3.2mm Chameleon Diamond (VS-SI equivalent), normally priced at ¥35,800. Discounts available for multiple purchases.](http://store.karatz.jp/cdn/shop/files/collage_58b68a06-8c7a-4bc7-b9ac-ea609feecc77.png?v=1772176632&width=2250)
![[On sale March 7th at 10 PM] Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P2260117_bfdad9b4-dc20-47f8-b354-e35ab71ff879.jpg?v=1772593440&width=4000)
![[Available at 10 PM on January 24th] Limited to 18 stones: Golden Hill Turquoise from Kazakhstan (December birthstone, average 1.3 carats) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010205_fcbc6430-2476-4eb1-973e-e93281536727.jpg?v=1772175779&width=4000)
![[Available at 10 PM on February 13th] Limited to 6 sets: Colombian Reverse Trapiche Emerald & Brazilian Sugarloaf Cut Emerald Set (Multiple purchase discounts available)](http://store.karatz.jp/cdn/shop/files/collage_9197464c-d272-428e-a69d-71268a1b73cf.png?v=1770868124&width=2250)
![[Available at 10 PM on March 7th] [Limited to 10 stones] Natural Diamond Gacha (Pepper, Silky Yellow, etc. / Average 0.16ct) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_d8982369-3cd2-45d6-8cc2-122a01b93a19.png?v=1772591962&width=2250)
![[On Sale 3/8 at 10pm] Tanzanian Bekili Blue Garnet (Color Change Garnet) 0.102ct Loose Stone](http://store.karatz.jp/cdn/shop/files/collage_00a0cec0-8a35-4ef3-a0dd-8b1bc5b028c8.png?v=1772924965&width=2250)
![[On Sale at 10 PM on March 8th] Sri Lankan Blue Sapphire (Ice Blue) 0.272ct Loose](http://store.karatz.jp/cdn/shop/files/P2109335_ac44d55b-287f-4c06-9cec-037e17682dc8.jpg?v=1772924637&width=2933)
![[On Sale at 10 PM on March 8th] Colombian Emerald 0.155ct Loose](http://store.karatz.jp/cdn/shop/files/P2109261_5e621f85-24a8-4f0b-b338-43b5aec748b6.jpg?v=1772924535&width=2718)
[On Sale at 10 PM on March 8th] Colombian Emerald 0.155ct Loose
Sale price¥29,800
[On Sale 3/8 at 10pm] Mexican Fire Opal 0.459ct Loose
Sale price¥18,800
[On Sale 3/8 at 10pm] 0.175ct Loose Hot Pink Sapphire from Mozambique
Sale price¥15,800
![[On Sale 2/14 at 10pm] Tanzanian Rhodolite Garnet 2.370ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P2100140_7ddfc586-88ef-48ba-8787-6d98a73afe19.jpg?v=1770901253&width=3152)
[On Sale 2/14 at 10pm] Tanzanian Rhodolite Garnet 2.370ct Loose Stone
Sale price¥19,800
![[On Sale at 10 PM on February 19th] Brazilian Pink Tourmaline 6.782ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P2100254_4fbc79f0-34d1-420a-a345-96cae757d473.jpg?v=1771377581&width=3091)
![[On Sale at 10 PM on 2/22] Synthetic Blue Sapphire 0.886ct Loose Stone (Synthetic Sapphire)](http://store.karatz.jp/cdn/shop/files/P2198601_50390c89-e2d8-45e0-8425-1f7cc2d5cad1.jpg?v=1771723576&width=2719)
![[On Sale 2/26 10pm] Kenyan Tsavorite 0.164ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P2198835_57a1340e-cd2e-4ec9-a358-fe82f9069440.jpg?v=1772013762&width=2594)
[On Sale 2/26 10pm] Kenyan Tsavorite 0.164ct Loose Stone
Sale price¥18,800
![[On Sale at 10 PM on 2/26] Sri Lankan Hessonite Garnet 0.441ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P2198891.jpg?v=1772013762&width=4000)
![[On Sale 2/26 10pm] Sri Lankan Hessonite Garnet 6.5mm/1.353ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P2198901_2653a534-bde7-436f-9c59-a4324c74d815.jpg?v=1772013670&width=2851)
![[On Sale 2/26 10pm] Tanzanian Color Change Garnet 0.509ct Loose](http://store.karatz.jp/cdn/shop/files/collage_608cadfb-6072-4f03-91ef-b619a431be2e.png?v=1772013670&width=2250)
[On Sale 2/26 10pm] Tanzanian Color Change Garnet 0.509ct Loose
Sale price¥9,800
![[On Sale 2/26 10pm] Tanzanian Color Change Garnet 0.607ct Loose](http://store.karatz.jp/cdn/shop/files/collage_23aa7d81-7ff0-4b22-bf24-8d63e0d43146.png?v=1772013670&width=2250)
[On Sale 2/26 10pm] Tanzanian Color Change Garnet 0.607ct Loose
Sale price¥11,000
![[On Sale 2/26 at 10 PM] Brown Diamond 0.174ct Loose Stone (FANCY DARK BROWN, SI-2)](http://store.karatz.jp/cdn/shop/files/P2197672_395a255a-76e0-479c-af4c-03929a1e0db1.jpg?v=1771852819&width=2548)
![[On Sale 2/26 at 10 PM] 0.209ct Yellow Diamond Loose (FANCY DEEP BROWNISH YELLOW, VVS-2)](http://store.karatz.jp/cdn/shop/files/collage_a9ddfe0a-f1d9-49c3-8940-7efc88540fc5.png?v=1771853359&width=2250)
[On Sale 3/8 at 10pm] Brazilian London Blue Topaz 0.476ct Loose
Sale price¥7,980
![[On Sale at 10 PM on March 8th] Mozambique Almandine Garnet 6.7mm/1.228ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P2260543_701f3b0b-ed8c-40c0-8dbe-981b2faac2ac.jpg?v=1772923678&width=2653)
[On Sale 2/21 10pm] American Anthill Garnet 4.0mm/0.332ct Loose Stone
Sale price¥11,000
[On Sale 2/21 10pm] American Anthill Garnet 4.0mm/0.359ct Loose Stone
Sale price¥12,800
![[Available at 10 PM on February 15th] Limited to 13 stones: Sri Lankan rhodolite garnet, 3.5mm, single loose stone (Sanjay cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010397_51e5b54c-425e-4470-bae3-181142eb8953.jpg?v=1759451393&width=4000)
![[Available at 10 PM on February 15th] Limited to 18 stones: Sri Lankan rhodolite garnet, 3mm, loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010204_1c0112ea-baaa-47f9-987d-8f580ebd2507.jpg?v=1771039619&width=4000)
Diamond 0.051ct loose (trapeze cut, VS class equivalent)
Sale price¥7,980
[Rouge cut] Almandine garnet 4.632ct loose
Sale price¥14,800
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.