![[On Sale 12 PM JST on Thursday, July 30] Adult Sebonstar Vol. 4 "Swan Tiara Pendant" Silver Model (Silver Color) SV925 & Rhodium Plating](http://store.karatz.jp/cdn/shop/files/P6123128.jpg?v=1784874779&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 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)
![[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)
![[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)
![[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)
![[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)
![[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)
![[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 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)
![[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)
![[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 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)
![[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 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)
![[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)
![[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)
![[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 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)
[Sales begin 7/20 at 10 PM] Australian black opal, 0.778 ct loose stone
Sale price¥35,800
[On Sale July 19th, 10 PM JST] Nepali Kyanite 0.477ct Loose Stone
Sale price¥12,800
[On sale July 19th at 10 PM] Nepal Bi-Color Kyanite 0.526ct Loose Stone
Sale price¥15,800
[Sale on 7/19 at 10 PM] Brazilian Yellow Beryl 1.472 ct Loose Stone
Sale price¥19,800
[Sale July 19 at 10 PM] Synthetic Rutile 5.3mm/0.844ct Loose Stone
Sale price¥13,800
[On Sale 7/18 at 10 PM] US Oregon Sunstone 1.032ct Loose Stone
Sale price¥25,800
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.