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Sold out 《Limited 7 Stones》Sri Lankan Green Zircon (Special Cut, including Silky Type)《Multi-purchase Discount Available》

《Limited 7 Stones》Sri Lankan Green Zircon (Special Cut, including Silky Type)《Multi-purchase Discount Available》
Sold out 《Limited to 13 stones》Beryl Gacha (including Aquamarine Vortex Cut Koshu Kiseki Kiriko) 1 Loose Stone《Multi-purchase discount available》

《Limited to 13 stones》Beryl Gacha (including Aquamarine Vortex Cut Koshu Kiseki Kiriko) 1 Loose Stone《Multi-purchase discount available》
Sold out Limited to 7 stones: Sri Lankan star sapphire (1 loose stone) Multiple purchase discounts available

Limited to 7 stones: Sri Lankan star sapphire (1 loose stone) Multiple purchase discounts available
Sold out Limited to 4 stones: Carving Gacha (pink tourmaline, average 3.4 carats) 1 loose stone (multiple purchase discounts available)

Limited to 4 stones: Carving Gacha (pink tourmaline, average 3.4 carats) 1 loose stone (multiple purchase discounts available)
Sold out November birthstone topaz gacha! Win an 8.16ct sky blue topaz from Koshu Kiriko (Sakura Kiriko) and more! (Multiple purchase discounts available)

November birthstone topaz gacha! Win an 8.16ct sky blue topaz from Koshu Kiriko (Sakura Kiriko) and more! (Multiple purchase discounts available)
Sold out Rainbow Garnet (Rose Cut, 3.0-5.5mm) from Tenkawa Village, Nara Prefecture, Single Loose Stone (Multiple Purchase Discounts Available)

Rainbow Garnet (Rose Cut, 3.0-5.5mm) from Tenkawa Village, Nara Prefecture, Single Loose Stone (Multiple Purchase Discounts Available)
Sold out 1 Russian Alexandrite loose stone (round cut, 1.3-1.6mm) {Multiple purchase discount available}

1 Russian Alexandrite loose stone (round cut, 1.3-1.6mm) {Multiple purchase discount available}
Sold out Limited to 4 stones: 1 Brazilian white topaz loose stone (average 2.1 carats) Multiple purchase discounts available

Limited to 4 stones: 1 Brazilian white topaz loose stone (average 2.1 carats) Multiple purchase discounts available
Sold out Limited to 5 stones: 1 Veracruz amethyst rough stone (from Mexico, February birthstone) Multiple purchase discount

Limited to 5 stones: 1 Veracruz amethyst rough stone (from Mexico, February birthstone) Multiple purchase discount
Sold out Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available

Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available
Sold out Zimbabwean Blue Apatite, UV Type, 1 Stone Loose {Multiple Purchase Discounts Available}

Zimbabwean Blue Apatite, UV Type, 1 Stone Loose {Multiple Purchase Discounts 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 9/22, 10 PM] 《Limited to 3 stones》 Imperfect Andesine Labradorite (Rainbow Moonstone, Sanje Milky Way Star Cut) 《Multi-buy discount available》

[Available 9/22, 10 PM] 《Limited to 3 stones》 Imperfect Andesine Labradorite (Rainbow Moonstone, Sanje Milky Way Star Cut) 《Multi-buy discount available》
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 【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 «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 [Limited to 6 stones] Rainbow Aquamarine 1 stone loose (avg. 0.7ct) [Multi-purchase discount available]

[Limited to 6 stones] Rainbow Aquamarine 1 stone loose (avg. 0.7ct) [Multi-purchase discount available]
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 [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*

[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*
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 at 10 PM on February 2nd] Limited to 13 stones. Newly arrived in Tucson: Brazilian Dumortierite in Quartz, 1.1 carats average cabochon cut. Discounts available for multiple purchases.

[Available at 10 PM on February 2nd] Limited to 13 stones. Newly arrived in Tucson: Brazilian Dumortierite in Quartz, 1.1 carats average cabochon cut. Discounts available for multiple purchases.
Sold out Maushitsit (Mawsissi) from Myanmar 1 stone loose (12mm)《Multiple purchase discount available》

Maushitsit (Mawsissi) from Myanmar 1 stone loose (12mm)《Multiple purchase discount available》
Sold out 《Limited to 10 Gems》Koshu Kiseki Kiriko plusthree "Akatsuki" Ametrine Gem Gacha《Bulk Purchase Discount Available》

《Limited to 10 Gems》Koshu Kiseki Kiriko plusthree "Akatsuki" Ametrine Gem Gacha《Bulk Purchase Discount Available》
Sold out 《Tucson Arrivals - Limited to 4 Stones》Canadian Eudialyte, approx. 2.5mm《Multiple Purchase Discount Available》

《Tucson Arrivals - Limited to 4 Stones》Canadian Eudialyte, approx. 2.5mm《Multiple Purchase Discount Available》
Sold out Garnet Gacha Loose Stone with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)

Garnet Gacha Loose Stone with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)
Sold out Limited to 12 stones: Mexican opal (custom faceted cut) - 1 loose stone (multiple purchase discounts available)

Limited to 12 stones: Mexican opal (custom faceted cut) - 1 loose stone (multiple purchase discounts available)
Sold out One loose, oil-free emerald from Russia (2.8mm, round cut) (Multiple purchase discounts available)

One loose, oil-free emerald from Russia (2.8mm, round cut) (Multiple purchase discounts available)
Sold out Limited to 6 stones: One loose, oil-free emerald from Russia (3.2mm, round cut) [Multiple purchase discounts available]

Limited to 6 stones: One loose, oil-free emerald from Russia (3.2mm, round cut) [Multiple purchase discounts available]
Sold out Limited to 4 stones: Sri Lankan Rhodolite Garnet (4mm, Round Cut) - 1 loose stone (Multiple purchase discounts available)

Limited to 4 stones: Sri Lankan Rhodolite Garnet (4mm, Round Cut) - 1 loose stone (Multiple purchase discounts available)
Sold out Limited to 13 stones: One loose rhodochrosite stone (4mm cabochon cut) from Detroit City, USA. Discounts available for multiple purchases.

Limited to 13 stones: One loose rhodochrosite stone (4mm cabochon cut) from Detroit City, USA. Discounts available for multiple purchases.
Sold out Kyanite from Nepal, 1 loose stone (indigo blue color, 4 x 6 mm, emerald cut) {Multiple purchase discount available}

Kyanite from Nepal, 1 loose stone (indigo blue color, 4 x 6 mm, emerald cut) {Multiple purchase discount available}
Sold out Limited to 7 stones: 1 Hokkaido rhodochrosite loose stone (4mm, rose cut) Multiple purchase discounts available

Limited to 7 stones: 1 Hokkaido rhodochrosite loose stone (4mm, rose cut) Multiple purchase discounts available
Sold out Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.

Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.
Sold out Limited to 3 stones: 1 neon blue apatite loose stone from Madagascar (Sangé cut) Multiple purchase discounts available

Limited to 3 stones: 1 neon blue apatite loose stone from Madagascar (Sangé cut) Multiple purchase discounts available
Sold out Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases.

Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases.
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 【10/24 22時販売】《限定3石》アイスブルージルコン（ラウンドカット3.5～3.6ｍｍ、サンジェ氏）《複数購入割引有》

【10/24 22時販売】《限定3石》アイスブルージルコン（ラウンドカット3.5～3.6ｍｍ、サンジェ氏）《複数購入割引有》
Sold out [Available 10/12 at 22:00] <limited to sets> Benitoite gradation 6-stone set including orange benitoite (peach benitoite) (1.75mm, includes top quality) <multi-purchase discount available></multi-purchase></limited>

[Available 10/12 at 22:00] Benitoite gradation 6-stone set including orange benitoite (peach benitoite) (1.75mm, includes top quality)

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 Brazilian Paraiba Tourmaline (Batalha Mine) Gacha 💎 Usually ¥45,800 With sorting, includes unheated. 《Multiple purchase discount available》

Brazilian Paraiba Tourmaline (Batalha Mine) Gacha 💎 Usually ¥45,800 With sorting, includes unheated. 《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 《Limited to 12 Stones》Russian Phenakite 1 Stone Loose (Average 0.35ct) 《Multiple Purchase Discount Available》

《Limited to 12 Stones》Russian Phenakite 1 Stone Loose (Average 0.35ct) 《Multiple Purchase Discount Available》
Sold out Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases.

Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases.
Sold out [On sale 8/12, 10 PM] "Limited to 10 stones" Strong Fire Gem Gacha featuring 3mm Benitoite and Blue Zircon, normally 42,800 yen (multiple purchase discount available)

[On sale 8/12, 10 PM] "Limited to 10 stones" Strong Fire Gem Gacha featuring 3mm Benitoite and Blue Zircon, normally 42,800 yen (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.