NEWS
Saturday, August 8th Update: Akihabara POPUP Shop Items
![[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/2026-08-0914.21.02.png?v=1786252887&width=1343)
![[Use the #202509 Campaign] 2025 New Year's Lucky Bag 🎍 Gem Gacha Lucky Bag with 4 or more gemstones (worth ¥25,000) [Discount for bulk purchase of lucky bags]](http://store.karatz.jp/cdn/shop/files/gazou.png?v=1785994448&width=1254)
![[On Sale 10 PM, June 7] *Limited to 3 Sets* 1.0ct/D/VS-VVS/IDEAL Lab-Grown Diamond (Synthetic Diamond) & 2 Rare Cabochon Stones (Total of 3 Stones Included) *Multiple Purchase Discount Available*](http://store.karatz.jp/cdn/shop/files/collage_07f6900d-fa8d-4bc4-acda-dc4cf0e8fed7.png?v=1785923452&width=4000)
![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_f4ce5d64-8804-46cd-8a67-6e5dfa2be8a9.png?v=1785924412&width=4000)
![[Sales start 10 PM, Aug. 10] Andesine-Labradorite Gacha with a Chance to Win a Dandelion Cut Worth 69,800 JPY (Limited to 12 Stones) (Plus 1 Andesine-Labradorite Stone) [Bulk Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/collage_9d631197-f87c-42dd-94c8-54df7bf67e47.png?v=1786088702&width=4000)
![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_0f6126db-fe6e-4ec4-ab15-e86a0e08371b.png?v=1786253811&width=2000)
![[22602753 posted] K18PG Chain](http://store.karatz.jp/cdn/shop/files/collage_744d1a35-d22a-48c2-a8c6-d319f9d5329c.png?v=1786189239&width=2000)
[22602753 posted] K18PG Chain
Sale price¥34,800
![[Listed as 22602752] Pt850 Chain](http://store.karatz.jp/cdn/shop/files/collage_3da06a7a-5c55-4270-9e39-8823f8ffaaf0.png?v=1786189310&width=2000)
[Listed as 22602752] Pt850 Chain
Sale price¥39,800
![[Published on 22602751] Pt850 Chain](http://store.karatz.jp/cdn/shop/files/collage_58437816-3008-4cb8-b2b6-1aabcbdfe441.png?v=1786189384&width=2000)
[Published on 22602751] Pt850 Chain
Sale price¥59,800
[Lottery Sale 0731_09] Burmese Ruby 1.020ct Loose Stone GIA
Sale price¥188,000
[Lottery Sale 0725_11] Burmese Pigeon Blood Ruby 0.450ct Loose AIGS
Sale price¥98,000
[Published as 12564068] Brazilian Spessartine Garnet 0.580ct Loose Stone
Sale price¥15,800
![[12564094 listed] Afghanite from Afghanistan 0.018ct Loose](http://store.karatz.jp/cdn/shop/files/P8055202_49959e96-c3df-4d87-afb1-d250780663a0.jpg?v=1786190243&width=2411)
[12564094 listed] Afghanite from Afghanistan 0.018ct Loose
Sale price¥5,980
![[Listed on 12564095] Nigerian Indicolite Tourmaline 0.241ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P8065242_7f9f8128-cd25-4c26-8968-d71009960511.jpg?v=1786190050&width=2468)
[Listed on 12564095] Nigerian Indicolite Tourmaline 0.241ct Loose Stone
Sale price¥25,800
![[Listed on 12564079] Unheated Purple-Pink Imperial Topaz from Brazil, 0.250ct Loose](http://store.karatz.jp/cdn/shop/files/P8054304_87130ebd-5dfb-45d5-99dd-f83c8190c91a.jpg?v=1786191387&width=2813)
![[Published 12564073] Lapis Lazuli (Lazurite) from Pakistan, 0.054ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P8054011_682ba8c6-d89c-4dba-8de3-97f3753990ea.jpg?v=1786191462&width=2467)
【12564074 posted】 Lazurite from Pakistan 0.063ct loose
Sale price¥14,800
【12564072 Published】 Lazurite from Pakistan 0.052ct Loose Gemstone
Sale price¥12,800
German Hauyne 0.134ct Loose Stone
Sale price¥29,800
[Listed on 12563931] Australian Opal 0.674ct Loose Gemstone
Sale price¥8,800
List of new arrivals
![【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate](http://store.karatz.jp/cdn/shop/files/P4085602_239fb724-e8c8-4f49-8fab-65e692522cdb.jpg?v=1785992300&width=4000)
[Star in cut] Mexican fire opal 7mm/0.678ct loose patch
Sale price¥39,800
【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone
Sale price¥39,800
[Lottery Sale 0629_08] Colombian Non-Oil Emerald 4.1mm/0.240ct Loose GIA
Sale price¥458,000
[Published 12563933] Brazilian Rubellite 1.100ct Loose Stone
Sale price¥98,000
Brazilian rhodonite 1.423ct loose stone
Sale price¥29,800
[Listed on 12562258] Eudialyte from Canada 2.796 ct loose stone
Sale price¥39,800
[12563993] Cambodian Blue Zircon 3.546ct Loose
Sale price¥69,800
[22602674 Listed] [Karafuri] Pt900 Burma Ruby 1.07ct Ring
Sale price¥258,000
[Listed as 12563891] Namibian Jeremejevite 0.089ct Loose
Sale price¥22,800
《Products eligible for multiple purchase discount》
![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_d85e6b2e-52be-4e3d-9b49-b7afa91b3f4d.png?v=1785987595&width=4000)
![[Sale starts July 7 at 10 PM] Limited to 14 Stones: Special Cut Gacha [Bulk Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/75.png?v=1785113154&width=2268)
![[On sale August 1 at 10 PM] Limited 10 Stones: Sapphire Gacha (including unheated cornflower blue sapphires, normally ¥69,800), with a bonus Sange sapphire. Multiple purchase discount available.](http://store.karatz.jp/cdn/shop/files/79.png?v=1785150857&width=4000)
![[On Sale July 31st at 10 PM] "Limited to 20 Stones" Indigo Tourmaline Gacha with 5 Gem-Quality Stones + 1 Loose Stone (Certificate Included) (Multiple Purchase Discount Available)](http://store.karatz.jp/cdn/shop/files/80.png?v=1785152112&width=4000)
![[On Sale August 2nd at 10 PM JST] Limited to 12 Stones: Blue Gemstone Gacha (Paraiba Tourmaline, Euclase, Tanzanite, etc.) + 1 Aquamarine Stone Included (Bulk Purchase Discount Available)](http://store.karatz.jp/cdn/shop/files/77_ede25372-0894-4b5d-ac9c-3b1ca2b56c4f.png?v=1785146266&width=4000)
![[Limited to 24 stones] Oregon Sunstone from America with beautiful Schiller (Oval cut, 5 x 7mm) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/collage_50cccb1a-7282-4487-ae6d-b6447e9885ee.png?v=1785119892&width=3000)
![[Limited to 16 Stones] Yellow Diamond Gacha including Sorting [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/64.png?v=1783912782&width=2268)
![[Sale starts 10PM on July 12] Limited 20 Stones: Grandidierite Single Stone Loose (Avg. 0.035ct) from Madagascar [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/P1010194_ea02faf6-d812-4758-9e0c-262e6891b700.jpg?v=1783773075&width=4000)
![[Sale on 7/ at 10 PM] "Limited to 13 Stones" Madagascar Sapphirine, average 0.09ct "Multiple Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/P1010288_ec4000a1-014e-44e1-9b97-40f834b9e6e7.jpg?v=1783494963&width=4000)
![[On sale July 24 at 10 PM] Limited to 5 stones: Andesine-Labradorite (Rainbow Moonstone) from Balangoda, Sri Lanka (Pear Shape Buff Top Cut, 5.0x3.0mm) - 1 Loose Stone (Multi-purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_81278a10-2271-47ca-aa76-74cf03ec312c.png?v=1784701906&width=3000)
![[On sale July 24 at 10 PM] Limited to 5 stones: Moonstone from Madiyagoda, Sri Lanka (June birthstone, oval buff top cut, 5.0x4.0mm), 1 loose stone. (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_0c9ec17a-a7f0-41f2-8f40-1dca2677abfc.png?v=1784701731&width=3000)
![[Sales begin July 24 at 10 PM] Limited 5 Stones: Moonstone from Mitiyagoda, Sri Lanka (June Birthstone, Round Buff-Top Cut, 4.0mm) - 1 Loose Stone [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/collage_f0bd4330-0217-47fd-88f4-e6604c1c4eae.png?v=1784701179&width=3000)
![[Sale starts July 20, 10 PM JST] Limited to 9 Stones: Opal Gacha, including Black Opal (plus a free Fire Opal!) (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/2026-07-207.47.29.png?v=1784501274&width=1270)
![[On sale July 19th at 10 PM] Limited to 12 Stones: Spanish Sphalerite Gacha Single Stone Loose Gemstone [Multi-purchase discount available]](http://store.karatz.jp/cdn/shop/files/P1010752_356462ac-3c50-4157-9518-627c0d99e74f.jpg?v=1784278877&width=4000)
![[On sale July 20th at 10 PM] "Limited to 13 Stones" Diamond Gacha: Win a FANCY VIVID Yellow Diamond (with sorting report) worth 22,800 yen. One loose stone. (Multiple purchase discount available.)](http://store.karatz.jp/cdn/shop/files/69_1dc952cf-a5b9-4240-ac75-53420ad95011.png?v=1784277381&width=4000)
![[On sale July 20th at 10 PM JST] Tanzanian Pink Spinel (approx. 3x4mm, oval cut) - Limited to 12 stones. Multiple purchase discount available.](http://store.karatz.jp/cdn/shop/files/P1010256_aecf3805-de02-4de7-aa94-5e5208ca43d2.jpg?v=1783911756&width=4000)
![[On sale July 19 at 10 PM] Limited 12 Pieces: Pakistan Vayrynenite Gacha 1 Piece Loose Stone (Average 0.03ct) - Bulk Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/P1010096_1_deb38e99-0510-49f1-a287-af84015fa7ce.jpg?v=1784208408&width=4000)
![[7/18 10 PM JST Release] Windsor Sapphire Gacha (1 of 14 Limited Stones) (Bicolor, Silky, Color Change, Avg. 0.30ct) (Multi-purchase Discount Available)](http://store.karatz.jp/cdn/shop/files/collage_52e4b5c0-2a5f-4509-9176-abffa097c791.png?v=1784246994&width=3000)
![[On sale July 12th at 10 PM] "Limited to 15 Stones" All stones with GIA certificate. Madagascar Grandidierite 1 stone loose (average 0.065ct) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_efaaa09c-4887-4d33-aeac-cd0ee5d3debd.png?v=1783774249&width=3000)
![[On sale July 10 at 10 PM] Limited 8 stones: Sweet Home Mine rhodochrosite single loose stone (average 0.1 ct) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/P1010384_a9c123c1-c332-47e6-895c-2e2eaf77e8e0.jpg?v=1783557558&width=4000)
![[Available July 15 at 10 PM] Limited to 6 Stones: Rainbow Aquamarine Single Stone Loose (average 0.7ct) [Multi-Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/collage_5dff6ef8-31bd-43db-abb0-1573e37d6311.png?v=1783918927&width=3000)
![[On sale July 10th at 10 PM] Veatchite, Pakistan, Loose Stone (Avg. 0.04ct) - Limited to 23 Stones - Multiple Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/P1010202_922f35b0-bb64-48b1-8b5c-0d9c3bd450c7.jpg?v=1783493089&width=4000)
![[Sales start July 11th, 10 PM JST] 《Limited to 11 stones》 Madagascar Apatite Single Stone Loose (UV fluorescent type, average 1.0ct) 《Bulk purchase discount available》](http://store.karatz.jp/cdn/shop/files/collage_9ebca466-92b9-498e-9068-a39188c70a00.png?v=1783678634&width=3000)
Bungo and Alchemist
[22602674 Listed] [Karafuri] Pt900 Burma Ruby 1.07ct Ring
Sale price¥258,000
[Published in 22602657] [Colorful] Pt900 Akoya Pearl Ring
Sale price¥98,000
[Sales begin 7/31 10 PM JST] [Colorflee] K18WG Diamond 0.30ct Earrings
Sale price¥29,800
[22602668 listed] [Colorful] K18 Tanzanite 0.25ct Ring
Sale price¥79,800
[22602667 Posted] [Colorful] Pt900 Hauyne 0.035ct Ring
Sale price¥89,800
[22602626 listed] [Kalafr] K18 Grossular Garnet 0.26ct Charm
Sale price¥39,800
[Published on 22602652] [Colorful] K18 Synthetic Opal Pendant Top
Sale price¥19,800
[Listed as 22602651] [Colorful] K9 Ruby Pendant Top (Necklace Top)
Sale price¥19,800
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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.