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Limited to 14 stones: Beryllium-heated sapphire (3.5mm, KEN cut) - 1 loose stone. Discounts available for multiple purchases.

Limited to 14 stones: Beryllium-heated sapphire (3.5mm, KEN cut) - 1 loose stone. Discounts available for multiple purchases. Sale price¥1,580
Limited to 11 stones: Sakura-shaped Contralus Opal and a specially cut Opal Gacha with one loose stone. Discounts available for multiple purchases.

Limited to 11 stones: Sakura-shaped Contralus Opal and a specially cut Opal Gacha with one loose stone. Discounts available for multiple purchases. Sale price¥3,980
Limited Edition Synthetic Moissanite Gacha! 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite Loose Stones Available. Multiple Purchase Discounts Available.

Limited Edition Synthetic Moissanite Gacha! 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite Loose Stones Available. Multiple Purchase Discounts Available. Sale price¥4,980
{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available}

{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available} Sale price¥3,980
宝石ガチャ💎バゲットカットのトルマリン1石💎4×2mm《複数購入割引有》

Gem gacha💎1 baguette cut tourmaline stone💎4×2mm《Discount available for multiple purchases》 Sale price¥1,980
Gem Gacha💎 Lepidolite in Quartz 1 stone《Multiple purchase discount available》

Gem Gacha💎 Lepidolite in Quartz 1 stone《Multiple purchase discount available》 Sale price¥3,980
Gem Gacha💎Chalcedony Gacha (1 in 5 will win a camellia cut)《Multiple purchase discounts available》

Gem Gacha💎Chalcedony Gacha (1 in 5 will win a camellia cut)《Multiple purchase discounts available》 Sale price¥3,980
Sold out [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"

[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"
Sold out [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"

[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"
Sold out 【10/30 22時販売】《限定10石》ブラジル産パライバトルマリン(CuO:1.22%,MnO:1.09%)やベニトアイトが当たるブルー宝石ガチャ（ロンドンブルートパーズ1石付）《複数購入割引有》

【10/30 22時販売】《限定10石》ブラジル産パライバトルマリン(CuO:1.22%,MnO:1.09%)やベニトアイトが当たるブルー宝石ガチャ（ロンドンブルートパーズ1石付）《複数購入割引有》
Sold out [10/ 22:00 Sale] 《Limited to 15 Stones》 Rare Stone Gacha 《Multiple Purchase Discount Available》

[10/ 22:00 Sale] 《Limited to 15 Stones》 Rare Stone Gacha 《Multiple Purchase Discount Available》
Sold out [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"

[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"
Sold out [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"

[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"
Sold out [Available 10/31 at 10 PM] 《Limited to 10 stones》 Zimbabwe Euclase rough (regular price ¥49,800), Brazilian Paraiba Tourmaline (CuO: 1.8%, MnO: 0.1%), or Triplite rough gacha (includes 1 Hackmanite rough) 《Multi-buy discount available》

[Available 10/31 at 10 PM] 《Limited to 10 stones》 Zimbabwe Euclase rough (regular price ¥49,800), Brazilian Paraiba Tourmaline (CuO: 1.8%, MnO: 0.1%), or Triplite rough gacha (includes 1 Hackmanite rough) 《Multi-buy discount available》
Sold out 【On sale 10/4 at 22:00】《Limited to 6 stones》 FANCY-color pink diamond gacha, including FANCY PINK, FANCY INTENSE, FANCY DEEP, and rose-cut stones (all stones include sorting reports)《Multi-purchase discount available》

【On sale 10/4 at 22:00】《Limited to 6 stones》 FANCY-color pink diamond gacha, including FANCY PINK, FANCY INTENSE, FANCY DEEP, and rose-cut stones (all stones include sorting reports)《Multi-purchase discount available》
Sold out 【On sale 10/4 at 22:00】《Limited to 6 stones》 FANCY-color pink diamond gacha, including FANCY PINK, FANCY INTENSE, FANCY DEEP, and rose-cut stones (all stones include sorting reports)《Multi-purchase discount available》

【On sale 10/4 at 22:00】《Limited to 6 stones》 FANCY-color pink diamond gacha, including FANCY PINK, FANCY INTENSE, FANCY DEEP, and rose-cut stones (all stones include sorting reports)《Multi-purchase discount available》
Sold out [Available 9/22, 10 PM] 《11 Stones Limited》 Tourmaline Gacha (includes Brazilian Paraiba Tourmaline) 《Multi-purchase discount available》

[Available 9/22, 10 PM] 《11 Stones Limited》 Tourmaline Gacha (includes Brazilian Paraiba Tourmaline) 《Multi-purchase discount available》
Sold out [10/11 10 PM Release] <limited to stones> Tanzanite Rough Gem Gacha (includes bi-color with pink zoisite, avg. 8ct) <multi-purchase discounts available></multi-purchase></limited>

[10/11 10 PM Release] Tanzanite Rough Gem Gacha (includes bi-color with pink zoisite, avg. 8ct)

Sold out [Available Oct 5, 10 PM] 《Limited Quantity・October Campaign Commemorative》 Rare Stone Gacha💎 8 varieties including 0.5ct Phosphophyllite, 0.2ct Benitoite, and Alexandrite, all with certificates of authenticity《Multi-purchase discounts available》

[Available Oct 5, 10 PM] 《Limited Quantity・October Campaign Commemorative》 Rare Stone Gacha💎 8 varieties including 0.5ct Phosphophyllite, 0.2ct Benitoite, and Alexandrite, all with certificates of authenticity《Multi-purchase discounts available》
Sold out [Available 9/27 at 10:00 PM] 《Limited to 15 stones》 Brazilian Bicolor Tourmaline (Cabochon Cut) Gacha Loose Stone 《Multi-purchase discount available》

[Available 9/27 at 10:00 PM] 《Limited to 15 stones》 Brazilian Bicolor Tourmaline (Cabochon Cut) Gacha Loose Stone 《Multi-purchase discount available》
Sold out [Available 10/4 at 10 PM] 《Limited to 11 stones》 Garnet Gacha including Russian Demantoid Garnet (normally 69,800 yen) (plus 1 Mint Garnet stone included) 《Multi-purchase discounts available》

[Available 10/4 at 10 PM] 《Limited to 11 stones》 Garnet Gacha including Russian Demantoid Garnet (normally 69,800 yen) (plus 1 Mint Garnet stone included) 《Multi-purchase discounts available》
Sold out [Available 9/22, 10 PM] 《Limited to 16 stones》 Amethyst Gacha featuring Shimizu Kikouseki’s Sakura and Dandelion cuts 《Multi-purchase discounts available》

[Available 9/22, 10 PM] 《Limited to 16 stones》 Amethyst Gacha featuring Shimizu Kikouseki’s Sakura and Dandelion cuts 《Multi-purchase discounts available》
Sold out [Limited to 9 stones] Garnet (KEN cut, 2.3-2.6mm) [Bulk purchase discount available]

[Limited to 9 stones] Garnet (KEN cut, 2.3-2.6mm) [Bulk purchase discount available]
Sold out [Available 9/26 at 10 PM] <limited quantity> Hong Kong Sourcing Gacha (7 types including Tanzanite, Hauyne, Color-Change Sapphire, Bekily Blue Garnet, etc.) 1 stone (plus 1 Rainbow Obsidian) <multiple purchase discount available></multiple></limited>

[Available 9/26 at 10 PM] Hong Kong Sourcing Gacha (7 types including Tanzanite, Hauyne, Color-Change Sapphire, Bekily Blue Garnet, etc.) 1 stone (plus 1 Rainbow Obsidian)

Sold out [On sale 9/ 22:00] 《Limited to 12 stones》 Big Gem Gacha - Win items including Shimizu Kikiseki’s Camellia cut and Sakura shape 《Multi-purchase discounts available》

[On sale 9/ 22:00] 《Limited to 12 stones》 Big Gem Gacha - Win items including Shimizu Kikiseki’s Camellia cut and Sakura shape 《Multi-purchase discounts available》
Sold out Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》

Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》
Sold out Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》

Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》
Sold out Color-change gacha featuring one gemstone, including Myanmar color-change zircon, alexandrite, and Bekily blue garnet, usually priced at 39,800 yen (multi-purchase discounts available)

Color-change gacha featuring one gemstone, including Myanmar color-change zircon, alexandrite, and Bekily blue garnet, usually priced at 39,800 yen (multi-purchase discounts available)
Sold out Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》

Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》
Sold out 《Limited to 5 stones》Garnet (KEN Cut, 3.4-3.7mm)《Multiple purchase discount available》

《Limited to 5 stones》Garnet (KEN Cut, 3.4-3.7mm)《Multiple purchase discount available》
Sold out 《Limited 7 stones》Garnet (KEN Cut, approx. 4mm)《Multiple purchase discount available》

《Limited 7 stones》Garnet (KEN Cut, approx. 4mm)《Multiple purchase discount available》
Sold out [Available 9/12 at 10 PM] 《Limited to 10 stones》 Gemstone Gacha featuring top-color benitoite (regularly 32,800 yen), Saint-J blue zircon, and other gems with beautiful fire 《Multi-buy discount available》

[Available 9/12 at 10 PM] 《Limited to 10 stones》 Gemstone Gacha featuring top-color benitoite (regularly 32,800 yen), Saint-J blue zircon, and other gems with beautiful fire 《Multi-buy discount available》
Sold out 【Available Sept 7, 10:00 PM】《Limited to 12 stones》Ruby Gacha featuring Pigeon Blood Rubies and Star Rubies, regularly priced at 59,800 yen and including appraisal certificates 《Multi-purchase discounts available》

【Available Sept 7, 10:00 PM】《Limited to 12 stones》Ruby Gacha featuring Pigeon Blood Rubies and Star Rubies, regularly priced at 59,800 yen and including appraisal certificates 《Multi-purchase discounts available》
Sold out 【Available 9/7 at 10 PM】Blue Zircon Gacha featuring 2.4ct rose-cut Ratanakiri Blue Zircon and more (Limited to 10 stones) 《Multi-purchase discounts available》

【Available 9/7 at 10 PM】Blue Zircon Gacha featuring 2.4ct rose-cut Ratanakiri Blue Zircon and more (Limited to 10 stones) 《Multi-purchase discounts available》
Sold out «Limited to 6 stones» Zoisite Gacha, all stones include identification reports (includes pink zoisite, yellow zoisite, green zoisite, and tanzanite, 5mm) «Multiple purchase discounts available»

«Limited to 6 stones» Zoisite Gacha, all stones include identification reports (includes pink zoisite, yellow zoisite, green zoisite, and tanzanite, 5mm) «Multiple purchase discounts available»
Sold out 【Available Sept 4 at 10 PM】《13 Stones Only》Expert Artisan Gacha: 14mm Dandelion-Cut Ametrine (Reg. 59,800 JPY) & Koshu Precious Stone Kiriko Citrine (29,800 JPY)《Multi-purchase discounts available》

【Available Sept 4 at 10 PM】《13 Stones Only》Expert Artisan Gacha: 14mm Dandelion-Cut Ametrine (Reg. 59,800 JPY) & Koshu Precious Stone Kiriko Citrine (29,800 JPY)《Multi-purchase discounts available》
Sold out 《Limited to 10 stones》 2.5ct Brazilian Aquamarine Gacha, including certification, featuring darker-hued stones (originally 49,800 yen) 《Multi-purchase discounts available》

《Limited to 10 stones》 2.5ct Brazilian Aquamarine Gacha, including certification, featuring darker-hued stones (originally 49,800 yen) 《Multi-purchase discounts available》
Sold out Koshu Kiseki Kiriko "plus three" Rose Quartz Gacha (guaranteed to include 2 Rose Quartz stones with Flora Drop cut; comes with a bonus Yamamoto Rose Quartz) 《Multi-purchase discount available》

Koshu Kiseki Kiriko "plus three" Rose Quartz Gacha (guaranteed to include 2 Rose Quartz stones with Flora Drop cut; comes with a bonus Yamamoto Rose Quartz) 《Multi-purchase discount available》
Sold out Limited to 13 stones! Tourmaline gacha featuring indigolite tourmaline worth ¥50,000 and rubellite worth ¥60,000. Plus, one canary yellow tourmaline. Discounts available for multiple purchases.

Limited to 13 stones! Tourmaline gacha featuring indigolite tourmaline worth ¥50,000 and rubellite worth ¥60,000. Plus, one canary yellow tourmaline. Discounts available for multiple purchases.
Sold out [8/ 10 PM Sale] Amethyst Gacha Featuring Dandelion Cut Gemstones by Shimizu Kisaki - 12 Limited Pieces Available! (Multiple Purchase Discount)

[8/ 10 PM Sale] Amethyst Gacha Featuring Dandelion Cut Gemstones by Shimizu Kisaki - 12 Limited Pieces Available! (Multiple Purchase Discount)
Sold out Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]

Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]
Sold out Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]

Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]
Sold out [On sale August 23rd at 10 PM] Limited 10 Stones! Amethyst Gacha featuring Koshu-Kiseki-Kiriko-plus-three "Akatsuki" (with one citrine cut by Mr. Sandje) [Multiple Purchase Discount Available]

[On sale August 23rd at 10 PM] Limited 10 Stones! Amethyst Gacha featuring Koshu-Kiseki-Kiriko-plus-three "Akatsuki" (with one citrine cut by Mr. Sandje) [Multiple Purchase Discount Available]
Sold out [6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》

[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》
Sold out [Available 8/23 at 10 PM] 《13 Sets Only》 Diamond Gacha featuring a set of 2 raw and cut diamonds, including a 0.2ct VS grade diamond 《Multi-purchase discounts available》

[Available 8/23 at 10 PM] 《13 Sets Only》 Diamond Gacha featuring a set of 2 raw and cut diamonds, including a 0.2ct VS grade diamond 《Multi-purchase discounts available》
Sold out Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]

Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]
Sold out 【8/23 22時販売】《限定12石》通常55,800円のパパラチアサファイア中宝鑑付含むベトナム産やビビッドなモザンビーク産などサファイアガチャ（さらにサンジェ氏サファイア1石）《複数購入割引有》

【8/23 22時販売】《限定12石》通常55,800円のパパラチアサファイア中宝鑑付含むベトナム産やビビッドなモザンビーク産などサファイアガチャ（さらにサンジェ氏サファイア1石）《複数購入割引有》
Sold out [On sale August 13th at 10 PM] Limited to 13 stones: 1 Indian Iolite Sunstone Gacha Stone (Long Hexagonal Cut or Pentagonal Cut) Average 0.35ct (Multiple purchase discount available)

[On sale August 13th at 10 PM] Limited to 13 stones: 1 Indian Iolite Sunstone Gacha Stone (Long Hexagonal Cut or Pentagonal Cut) Average 0.35ct (Multiple purchase discount available)

KARATZ Custom Made

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.

KARATZ・Five Commitments

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.