NEWS
New & Updated: 6/26 (Fri)
![[Restock on June 27th at 10 PM] Authentic Gemstone Encyclopedia 3D Stickers Vol. 1: The Big Five Gems](http://store.karatz.jp/cdn/shop/files/IMG_3658.jpg?v=1781061036&width=3384)
![[Sales start 10 PM on 6/26] Limited to 30 sets: 1 in 10 is a pair of 2 stones - Zambian emerald loose stone (approx. 6x4mm, emerald cut) with deep color. (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_aeb10a54-ec73-4ab3-9ab2-40cc227a8bcc.png?v=1782347727&width=3000)
![[On Sale June 27, 10 PM JST] "Limited to 10 Stones" Rough Stone Gacha including Paraiba Tourmaline (CuO: 1.7%+ content) and Benitoite (with a bonus Oregon Sunstone) "Multiple Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/52_a5256d7b-e60a-4b76-822d-f33111c60340.png?v=1782353139&width=2268)
![[On sale June 27th at 10 PM] Limited to 10 Stones: Sri Lankan Chrysoberyl (Cut by Mr. Sanje) Gacha (Includes Parrot Color, Canary Yellow) [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/P5150155.jpg?v=1779061883&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/2026-06-2516.42.36.png?v=1782373473&width=1280)
![[Sale on June 27th at 10 PM] Limited to 2 Stones: Myanmar Red Spinel (Pear Shape approx. 4x3mm) - Multi-Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/P1010276_6883d9c0-c222-4c55-a751-78659b5850e8.jpg?v=1782361559&width=4000)
![[Sale at 10 PM on 6/27] Limited to 9 Stones: Myanmar Red Spinel (Round Cut, approx. 3.5mm) - Multiple Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/P1010236_739fda47-1cb1-405b-b6ff-e487f464741c.jpg?v=1782361127&width=4000)
![[Sale from 10 PM on June 28] [Limited to 15 Stones] Synthetic Gem Gacha 💎 Includes a 1.02ct/D/VS1/3EX certified lab-grown diamond, normally priced at 50,000 yen (with a bonus synthetic cobalt spinel) [Bulk purchase discount available]](http://store.karatz.jp/cdn/shop/files/31_4a872569-3259-4461-a07e-ea5bdbf13e87.png?v=1782356028&width=1000)
![[On Sale June 28th at 10 PM] Limited to 10 Stones: Brazilian Mint-Color Montebrasite (Princess Cut approx. 3.5mm) - 1 Loose Stone (Volume Discount Available)](http://store.karatz.jp/cdn/shop/files/P1010148_b8369c04-8eff-4993-89be-b2e98144c98d.jpg?v=1782382564&width=4000)
![[On Sale June 28th, 10 PM] Brazilian Paraiba Tourmaline Gacha with Sorting Report (CuO: 2.1%, MnO: 2.2%) - Limited to 18 Stones! (Multiple Purchase Discount Available)](http://store.karatz.jp/cdn/shop/files/collage_6bc80329-36ed-4bc7-bbff-5c77e00a25bd.png?v=1782393589&width=3000)
![[Listed on 12563409] Afghani Green Hauynite 0.142ct Loose](http://store.karatz.jp/cdn/shop/files/P6247012_6784aa7c-1b22-41d2-8991-6f089a7642fc.jpg?v=1782477840&width=3023)
[Listed on 12563409] Afghani Green Hauynite 0.142ct Loose
Sale price¥39,800
![[Posted as 12563408] Green Hauyne from Afghanistan 0.135ct Loose](http://store.karatz.jp/cdn/shop/files/P6247038_9a44cca6-91f7-4e01-bdc2-4fe839923035.jpg?v=1782477978&width=2668)
[Posted as 12563408] Green Hauyne from Afghanistan 0.135ct Loose
Sale price¥35,800
![[Listing No. 12563411] Blue Sapphire 1.134ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P6246958_eea5cc63-3507-499c-baec-4e1a8a38b629.jpg?v=1782478206&width=2792)
[Listing No. 12563411] Blue Sapphire 1.134ct Loose Gemstone
Sale price¥45,800
![[Posted 12563373] Zimbabwean Euclase 0.054ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P6236458_e58e36a8-860f-47a7-aa73-ae966bfcf06b.jpg?v=1782478568&width=2506)
[Posted 12563373] Zimbabwean Euclase 0.054ct Loose Gemstone
Sale price¥14,800
Cinnabar from Xinsha, Hunan Province, China, 1.750 ct Loose Gemstone
Sale price¥29,800
Cinnabar (辰砂) from Hunan Province, China - 1.508 ct Loose Stone
Sale price¥25,800
![[On Sale June 27th, 10 PM] Madagascar Padparadscha Sapphire 0.186ct Loose Stone - Central Gemological Laboratory](http://store.karatz.jp/cdn/shop/files/P6252518_64459ec1-d768-4fab-8c63-923b31ea5014.jpg?v=1782431888&width=3130)
![[Posted 12562267] Lazulite (blue spar) from Brazil, 0.022ct Loose](http://store.karatz.jp/cdn/shop/files/P6251559_d991a0d0-5676-41d4-9292-246c7556322a.jpg?v=1782477505&width=2895)
[Posted 12562267] Lazulite (blue spar) from Brazil, 0.022ct Loose
Sale price¥18,800
【Posted on 12562266】Brazilian Lazulite (blue spar) 0.067ct Loose
Sale price¥49,800
![[Sale on June 25th at 10 PM] [Colorful] K18WG Zircon Pendant Top (Necklace Top) with Appraisal Report](http://store.karatz.jp/cdn/shop/files/P6042575_c839da16-0f5b-4156-aada-001491ac28ad.jpg?v=1782132699&width=2994)
![[On sale June 27, 10 PM] Colorful K18 Blue Sapphire and Diamond Ring with Certificate](http://store.karatz.jp/cdn/shop/files/P6170249_023d09e9-47a9-4960-a368-6de881b8189f.jpg?v=1782283514&width=3098)
![[On sale June 27th at 10 PM] [Colorflee] K18 Blue Sapphire 1.89ct / Diamond 0.74ct Ring with Appraisal Report](http://store.karatz.jp/cdn/shop/files/P6053893_227a8565-2a46-476a-a1ac-1268e838fda2.jpg?v=1782283159&width=2831)
![[On sale 6/27 10 PM] [Colorful] Pt900 Grossular Garnet 1.38ct and Diamond 0.13ct Ring with Appraisal](http://store.karatz.jp/cdn/shop/files/S__243499014_7e1f0583-bfdf-414c-bc00-0268975a23eb.jpg?v=1782282777&width=1064)
![[On sale June 26th at 10 PM] Madagascar Canary Yellow Chrysoberyl 4.2mm/0.292ct Loose Stone with Certificate](http://store.karatz.jp/cdn/shop/files/P6185496_f050569f-7ddd-47c3-b46f-b8cd0a2d2a17.jpg?v=1782188163&width=3046)
![[On sale June 26th at 10 PM] Madagascar Canary Yellow Chrysoberyl 0.569ct Loose Gemstone with Certificate](http://store.karatz.jp/cdn/shop/files/P6185468_e6cc8a92-db95-4736-83f0-fb0a5612739a.jpg?v=1782188078&width=2907)
Almandine Garnet 1.485ct Loose Stone
Sale price¥15,800
Almandine Garnet 1.058ct Loose Stone
Sale price¥12,800
Indian Moonstone 8mm/1.879ct Loose
Sale price¥6,980
Brazilian Dendritic Agate 2.788ct Loose Stone
Sale price¥6,980
Brazilian Dendritic Agate 1.679ct Loose Stone
Sale price¥5,980
Synthetic Alexandrite 0.471ct loose stone
Sale price¥14,800
Synthetic Alexandrite 0.287ct loose stone
Sale price¥8,800
List of new arrivals
Tanzania Bicolor Zoisite 4.7mm/0.486ct Loose Stone
Sale price¥9,800
Tanzanite from Tanzania 0.245ct loose stone
Sale price¥8,800
Tanzania Bicolor Zoisite 0.295ct Loose Stone
Sale price¥7,980
Australian black opal 3.242ct loose stone
Sale price¥59,800
Synthetic Moissanite 0.634ct loose stone
Sale price¥9,800
Almandine Garnet 1.471ct Loose Stone
Sale price¥14,800
Almandine Garnet 1.388ct Loose Stone
Sale price¥11,800
Almandine Garnet 1.988ct Loose Stone
Sale price¥16,800
Blue sapphire 0.287ct loose
Sale price¥12,800
Brazilian Paraiba Tourmaline 0.060ct Loose (CuO:1.6%, MnO:2.3%)
Sale price¥42,800
Russian Diamond Rough (Sawable) 0.103ct Loose (Trigon)
Sale price¥25,800
Tanzanian Rhodolite Garnet 0.448ct Loose Stone
Sale price¥6,980
Tanzanian Rhodolite Garnet 0.810ct Loose Stone
Sale price¥9,800
Tanzanian Kornerupine Cat's Eye 1.608ct Loose Stone
Sale price¥6,980
American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose
Sale price¥8,800
Goshenite 5.7mm/0.572ct loose stone
Sale price¥5,980
Oregon Sunstone 0.713ct loose
Sale price¥4,980
[On sale 6/20 10 PM JST] Loose Diamond 3.4mm/0.144ct (I, VS1, Good)
Sale price¥16,800
Zimbabwean Blue Apatite (UV Type) 0.650ct Loose
Sale price¥9,800
Bolivian Ametrine 36.887ct loose stone
Sale price¥79,800
YAG (Yttrium Aluminum Garnet) 3.9mm/0.317ct loose stone
Sale price¥6,980
YAG (Yttrium Aluminum Garnet) 4.9mm/0.574ct loose stone
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 5.0mm/0.672ct loose stone
Sale price¥9,800
Synthetic rutile 0.942ct loose stone
Sale price¥14,800
Synthetic Opal 1.804ct Loose
Sale price¥12,800
YAG (Yttrium Aluminum Garnet) 4.1mm/0.346ct Loose Stone (Rose Cut)
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 3.3mm/0.208ct Loose Stone (Rose Cut)
Sale price¥5,980
Mexican Fire Opal 0.718ct Loose
Sale price¥9,800
Mexican Fire Opal 0.593ct Loose (Faceted Cut)
Sale price¥9,800
Almandine Garnet 0.660ct Loose
Sale price¥6,980
Brazilian Amethyst 9.749ct Loose Stone
Sale price¥12,800
Nigerian bicolor tourmaline 0.379ct loose stone
Sale price¥6,980
Tanzanian green sapphire 0.303ct loose stone
Sale price¥8,800
Sri Lankan cobalt spinel 0.281ct loose stone
Sale price¥55,800
Tanzania Purple Zoisite 0.863ct Rough Stone
Sale price¥7,980
Colombian mint color emerald 0.297ct loose stone
Sale price¥8,800
[Updated 12552163] Benitoite 0.099ct loose stone
Sale price¥29,800
[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone
Sale price¥128,000
Pakistani Oil in Quartz 0.438ct Loose Stone
Sale price¥6,980
Madagascar sapphire 0.448ct loose stone
Sale price¥15,800
Diamond (cabochon cut) 0.206ct loose
Sale price¥45,800
《Products eligible for multiple purchase discount》
![[Available June 20th at 10 PM] Limited to 21 pieces - Kochi Prefecture Blood Coral Branch (rough) 1 stone (March birthstone, coral, average 4.7ct) - Multiple purchase discount available](http://store.karatz.jp/cdn/shop/files/P1010050_7487736d-6e14-4fc3-912a-6525c9511b14.jpg?v=1781156293&width=4000)
![[Sale on June 19th at 10 PM] "Limited to 20 pieces" Kochi Prefecture Blood Coral Branch (raw, unworked) 1 piece (March birthstone, coral, average 5.8ct) "Discounts for multiple purchases available"](http://store.karatz.jp/cdn/shop/files/P1010014_cf38e237-8d3d-4189-8783-0692fbf04afe.jpg?v=1781156196&width=4000)
![[On sale June 21st at 10 PM] [Limited to 1 set] Amethyst & Citrine Symmetrical Pair Cut Set 66.58ct Loose Gemstones [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/collage_f463bd1c-1808-4730-abdd-52119c463d1e.png?v=1781607244&width=3000)
![[On sale June 20 at 10 PM] Limited to 5 Stones: Cambodian Ratanakiri Blue Zircon Gacha (Avg. 0.73ct) (Bulk Purchase Discount Available)](http://store.karatz.jp/cdn/shop/files/49_be81e5a4-6f60-4395-8e52-9ddaa40bd1ec.png?v=1781572307&width=1890)
![[On sale June 19th at 10 PM] Limited 1 Set: Two Tanzania Illusion Sunstones Cut by NOBU (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/P1010588_3560c6c7-ea0f-4ccf-9ba9-8569eb2fe51d.jpg?v=1781571224&width=4000)
![[Sales begin 6/20 10 PM] Limited to 12 Stones: Madagascar Andesine & Labradorite (Rainbow Moonstone & Blue Moonstone) 2-Stone Set (Average 0.60ct) - Multiple Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/collage_702c53e9-00d8-4097-9b45-09aefac43fc6.png?v=1781597688&width=3000)
![[On sale June 19th at 10 PM] "Limited 7 Stones" Anthill Garnet Single Loose Stone (Oval Cut, approx. 4x3mm) "Multiple Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/S__242548738.jpg?v=1781589437&width=1477)
![[Sales begin 10 PM JST on 6/21] Dragon Garnet Single Loose Stone (Round Cut, 5mm) - Limited to 5 Stones - Multi-Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/collage_43f16cd2-430d-4c71-9d89-063a4c1b7c62.png?v=1781605522&width=3000)
![[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_fbc9c12a-d5e0-4c94-9d20-bbfb36fad717.png?v=1781513378&width=3000)
![[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_532a76cb-8ad0-4f4f-a177-0547aa0bef7a.png?v=1781512599&width=3000)
![[On sale June 21st at 10 PM] Ruby Gacha (with synthetic ruby as a bonus) including two pigeon blood rubies with appraisal certificates (limited to 15 stones) - Multiple purchase discount available](http://store.karatz.jp/cdn/shop/files/46_64e5d430-259e-4ae1-9011-7948956733ef.png?v=1781501306&width=1890)
![[On sale at 10 PM on 6/21] Sapphire Gacha💎 with a chance to win one of 12 limited cornflower blue sapphires with AIGS certification. Comes with a trillion-cut sapphire bonus. (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/45_75d03d61-7075-4fab-8847-80c7faf27910.png?v=1781499622&width=1890)
![[On sale May 24th at 10 PM] "Limited to 12 Stones" Blue Gemstone Gacha 💎 Brazil Paraiba Tourmaline (CuO: 1.5%, MnO: 3.2%) and Zimbabwe Euclase, normally priced at ¥35,800, and more! (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/P1010002_2b7e0b49-712e-480c-b01b-243e8d925a3e.jpg?v=1781241884&width=4000)
![[On Sale June 13, 10 PM] [Limited to 2 Stones] Brown Diamond (4mm/0.3ct, with certificate) [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/collage_ab98be24-a2fb-436e-abe4-9e7713aae512.png?v=1781241148&width=3000)
![[On sale June 8th, 10 PM JST] 《Limited to 4 stones》Needle-in-Blue Topaz Gacha💎Average 45ct《Multiple purchase discount available》](http://store.karatz.jp/cdn/shop/files/39.png?v=1780478004&width=2268)
![[On Sale June 6th, 10 PM JST] 11-Piece Limited Edition Madagascar Sapphire Gacha (Including bi-color and silky varieties, 3.5-5.4mm) [Multi-buy discount available]](http://store.karatz.jp/cdn/shop/files/P1010258_f7dc9e7a-ba96-4f16-b0cc-3597b42b15e9.jpg?v=1780475574&width=4000)
![[On Sale June 7th, 10 PM] Limited to 15 Stones: Afghan Pink Diaspore Single Stone Loose Gemstone (Avg. 0.3ct) - Multiple Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/P1010212_0cf98850-1eef-4062-9357-fd4c24ff6ff7.jpg?v=1780475062&width=4000)
![[Sale starts 6/5 at 10 PM JST] 《Limited to 25 sets》Kochi Prefecture Red Coral Branch (Raw Wood) and 2 Loose Stones Set (March Birthstone, Coral) 《Multiple Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/collage_3cb44437-e951-4438-8b17-74206568a429.png?v=1780733612&width=4000)
![[On Sale June 6th]《Limited to 9 Stones》Brazilian Amethyst Single Stone Loose (Includes Elestial and Bi-Color Amethyst)《Bulk Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/P1010178_2ed6b7e4-2260-4141-b297-92d488154d96.jpg?v=1780474262&width=4000)
![[On sale May 23rd, 10 PM] "Limited 7 Stones" Kochi Prefecture Blood Coral Loose Gemstones (Oval Cut, 4x6~7mm) "Multi-purchase discount available"](http://store.karatz.jp/cdn/shop/files/P5210043_c0fa32b1-c95e-4019-8fc7-8a9735d549cd.jpg?v=1779352430&width=4000)
![[Sale starts May 24th, 10 PM JST] 9 Limited Edition Kochi Prefecture Red Coral Branches (Rough) (1 Piece) (March Birthstone, Coral, average 6.5ct) (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/P5210045.jpg?v=1779351573&width=4000)
Bungo and Alchemist
[Available June 18th at 10 PM] [Colorful] K18WG Diamond 1.03ct Pendant Top
Sale price¥128,000
[COLORFUL] Pt900 Diamond 1.00ct Pendant (Necklace)
Sale price¥49,800
【Calafuri】K18 Quartzite Pendant Top (Necklace Top)
Sale price¥49,800
[Colorful] Pt900 Diamond 0.65ct Pendant Top
Sale price¥89,800
![[On sale May 14 at 10 PM] Colorful WISH UPON A STAR® 3.5mm/0.166ct/F/VS1 Diamond with Certificate](http://store.karatz.jp/cdn/shop/files/collage_602f7523-6cd3-47f0-8a9e-92663bee40ad.png?v=1778577187&width=4000)
[Sales begin May 18 at 10 PM JST] [Colorflee] Pt900 Diamond 0.50ct Ring
Sale price¥79,800
Search by category
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 publishes "Gemstone Encyclopedia"
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.