Login

¥5,000 - ¥10,000

Sort by
[On sale June 28th at 10 PM] Brazilian Paraiba Tourmaline Gacha with sorting results (CuO: 2.1%, MnO: 2.2%), usually ¥45,800, now with a chance to win one of 18 limited stones. (Multiple purchase discount available)

[On sale June 28th at 10 PM] Brazilian Paraiba Tourmaline Gacha with sorting results (CuO: 2.1%, MnO: 2.2%), usually ¥45,800, now with a chance to win one of 18 limited stones. (Multiple purchase discount available) Sale price¥9,800
[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" Sale price¥6,980
[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

[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 Sale price¥5,980
[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)

[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) Sale price¥7,980
[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available"

[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available" Sale price¥5,980
[Sale 6/] 10:00 PM - Limited 11 Stones - Sri Lankan Pink Sapphire (Emerald Cut) Average 0.73ct (Multiple Purchase Discount Available)

[Sale 6/] 10:00 PM - Limited 11 Stones - Sri Lankan Pink Sapphire (Emerald Cut) Average 0.73ct (Multiple Purchase Discount Available) Sale price¥5,980
[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]

[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] Sale price¥5,980
[Sale at 10 PM on 6/27] Limited to 9 Stones: Myanmar Red Spinel (Round Cut, approx. 3.5mm) - Multiple Purchase Discount Available

[Sale at 10 PM on 6/27] Limited to 9 Stones: Myanmar Red Spinel (Round Cut, approx. 3.5mm) - Multiple Purchase Discount Available Sale price¥9,800
[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"

[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" Sale price¥6,980
[Sales begin 10 PM JST on 6/21] Dragon Garnet Single Loose Stone (Round Cut, 5mm) - Limited to 5 Stones - Multi-Purchase Discount Available

[Sales begin 10 PM JST on 6/21] Dragon Garnet Single Loose Stone (Round Cut, 5mm) - Limited to 5 Stones - Multi-Purchase Discount Available Sale price¥8,800
Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available"

Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available" Sale price¥8,800
[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available"

[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available" Sale price¥7,980
[On sale July 5th, 10 PM JST] 《Limited 13 Stones》Unique Diamond Gacha - Including 1ct+ diamonds, round cut, rose cut, and fluorescent diamonds (with a bonus London Blue Diamond stone!) 《Multiple Purchase Discount Available》

[On sale July 5th, 10 PM JST] 《Limited 13 Stones》Unique Diamond Gacha - Including 1ct+ diamonds, round cut, rose cut, and fluorescent diamonds (with a bonus London Blue Diamond stone!) 《Multiple Purchase Discount Available》 Sale price¥5,980
ブラジル産デュモルチェライトインクォーツ 1.082ctルース

[On sale July 4th at 10 PM] Brazilian Dumortierite in Quartz 1.082ct Loose Stone Sale price¥9,800
マラウイ産ムーンストーン（マラウイムーンストーン） 1.621ctルース

[On sale July 3rd at 10 PM] Malawi Moonstone 1.621ct Loose Stone Sale price¥9,800
マラウイ産ムーンストーン（マラウイムーンストーン） 1.684ctルース

[On sale July 3 at 10 PM JST] Malawi Moonstone 1.684 ct Loose Gemstone Sale price¥9,800
Diamond loose/certificate transfer fee

Diamond loose/certificate transfer fee Sale price¥8,800
ブラジル産ユークレース 0.263ctルース

Brazilian Euclase 0.263ct Loose Stone (Colorless Euclase) Sale price¥9,800
フラワールチルインクォーツ ルース

Brazilian Flower Rutile in Quartz 5.122ct Loose Stone Sale price¥7,980
Synthetic Alexandrite 0.287ct loose stone

Synthetic Alexandrite 0.287ct loose stone Sale price¥8,800
デンドリティックアゲート 1.679ctルース

Brazilian Dendritic Agate 1.679ct Loose Stone Sale price¥5,980
デンドリティックアゲート 2.788ctルース

Brazilian Dendritic Agate 2.788ct Loose Stone Sale price¥6,980
デンドリティックアゲート 3.575ctルース

Brazilian Dendritic Agate 3.575ct Loose Stone Sale price¥8,800
ピンクトルマリン 0.418ctルース

Brazilian Pink Tourmaline 0.418ct Loose Stone (Rouge Cut) Sale price¥8,800
モンタナアゲート 9.528ctルース

Montana Agate 9.528ct Loose Sale price¥8,800
オレゴンサンストーン 0.736ctルース

Oregon Sunstone from the United States 0.736ct loose stone Sale price¥8,800
ブラジル産ルチルレイテッドクォーツ 1.406ctルース

Brazilian rutilated quartz (rutilated quartz) 7.8mm/1.406ct loose stone Sale price¥8,800
ブラジル産ルチルレイテッドクォーツ 1.482ctルース

Brazilian rutilated quartz (rutilated quartz) 8.1mm/1.482ct loose stone Sale price¥8,800
ブラジル産ルチルレイテッドクォーツ 2.090ctルース

Brazilian rutilated quartz (rutilated quartz) 8.2mm/2.090ct loose stone Sale price¥8,800
スリランカ産クリソベリルキャッツアイ 1.514ctルース

Sri Lankan Chrysoberyl Cat's Eye 1.514ct Loose Stone Sale price¥5,980
合成モアッサナイト 0.678ctルース

Synthetic Moissanite 5.8mm/0.678ct Loose Stone Sale price¥8,800
Brazilian Green Tourmaline 0.825ct Loose Stone

Brazilian Green Tourmaline 0.825ct Loose Stone Sale price¥9,800
Brazilian Green Tourmaline 0.376ct Loose Stone

Brazilian Green Tourmaline 0.376ct Loose Stone Sale price¥7,980
Brazilian Green Tourmaline 0.332ct Loose Stone

Brazilian Green Tourmaline 0.332ct Loose Stone Sale price¥7,980
ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 0.344ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 0.344ct Loose Stone Sale price¥9,800
タンザニア産バイカラーゾイサイト 0.489ctルース

Tanzania Bicolor Zoisite 4.6mm/0.489ct Loose Stone Sale price¥9,800
タンザニア産バイカラーゾイサイト 0.540ctルース

Tanzania Bicolor Zoisite 4.8mm/0.540ct Loose Stone Sale price¥9,800
[Sale on June 27th at 10 PM] Limited to 2 Stones: Myanmar Red Spinel (Pear Shape approx. 4x3mm) - Multi-Purchase Discount Available

[Sale on June 27th at 10 PM] Limited to 2 Stones: Myanmar Red Spinel (Pear Shape approx. 4x3mm) - Multi-Purchase Discount Available Sale price¥9,800
タンザニア産タンザナイト 0.497ctルース

Tanzanite from Tanzania 0.497ct loose stone Sale price¥9,800
タンザニア産バイカラーゾイサイト 0.486ctルース

Tanzania Bicolor Zoisite 4.7mm/0.486ct Loose Stone Sale price¥9,800
Tanzanite from Tanzania 0.245ct loose stone

Tanzanite from Tanzania 0.245ct loose stone Sale price¥8,800
タンザニア産バイカラーゾイサイト 0.295ctルース

Tanzania Bicolor Zoisite 0.295ct Loose Stone Sale price¥7,980
タンザナイト 0.385ctルース

Tanzanite from Tanzania 0.385ct loose stone Sale price¥8,800
バイカラーゾイサイト 0.286ctルース

Tanzania Bicolor Zoisite 0.286ct Loose Stone Sale price¥7,980
合成モアッサナイト 0.634ctルース

Synthetic Moissanite 0.634ct loose stone Sale price¥9,800
ロードライトガーネット 0.448ctルース

Tanzanian Rhodolite Garnet 0.448ct Loose Stone Sale price¥6,980
Tanzanian Rhodolite Garnet 0.810ct Loose Stone

Tanzanian Rhodolite Garnet 0.810ct Loose Stone Sale price¥9,800
タンザニア産コーネルピンキャッツアイ 1.608ctルース

Tanzanian Kornerupine Cat's Eye 1.608ct Loose Stone Sale price¥6,980

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.