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[On sale 10/19 at 10 PM] {Limited to 10 stones} Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) {Multiple purchase discounts available}

[On sale 10/19 at 10 PM] {Limited to 10 stones} Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) {Multiple purchase discounts available} Sale price¥6,980
[4 stones left] Brazilian Dendritic Quartz Kitten Cut Loose Stone (For Beginners) (5mm) [Multiple purchase discounts available]

[4 stones left] Brazilian Dendritic Quartz Kitten Cut Loose Stone (For Beginners) (5mm) [Multiple purchase discounts available] Sale price¥3,980
[On sale from 10/25 at 10 PM] Limited to 12 stones: Mexican Opal (Custom Faceted Cut) Loose Stone [Multiple purchase discounts available]

[On sale from 10/25 at 10 PM] Limited to 12 stones: Mexican Opal (Custom Faceted Cut) Loose Stone [Multiple purchase discounts available] Sale price¥3,980
[On sale 10/22 at 10 PM] Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]

[On sale 10/22 at 10 PM] Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available] Sale price¥2,980
[On Sale 10/5 at 10 PM] [Limited to 11 Stones] Synthetic Moissanite Gacha 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite, Loose Stones Included [Multiple Purchase Discounts Available]

[On Sale 10/5 at 10 PM] [Limited to 11 Stones] Synthetic Moissanite Gacha 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite, Loose Stones Included [Multiple Purchase Discounts Available] Sale price¥4,980
ジンバブエ産ユークレース 0.409ctルース

Euclase from Zimbabwe 0.409ct loose Sale price¥45,800
アメリカ産ベニトアイト 0.262ctルース

[On Sale at 10pm on October 5th] American Benitoite 0.262ct Loose Stone Sale price¥128,000
K18YG ミャンマー産翡翠（ヒスイ） 0.434ct・エメラルドリング

[On sale from 10/11 at 10 PM] 18K Yellow Gold Myanmar Jadeite and Emerald 0.434ct Ring Sale price¥79,800
非加熱ブラジル産パライバトルマリン 0.170ctルース

[On Sale 10/11 at 10 PM] Brazilian Paraiba Tourmaline 0.170ct Loose Stone (CuO: 2.1%, MnO: 1.1%) Sale price¥198,000
モザンビーク産パライバトルマリン 1.309ctルース（酸化鉄インクルージョン含む）

[On Sale 10/13 at 10 PM] 1.309ct Paraiba Tourmaline Loose Stone from Mozambique (Contains Iron Oxide Inclusions) Sale price¥98,000
ロシア産アレキサンドライト 0.088ctルース

[10/13 22:00 Sale] Russian Alexandrite 0.088ct Loose Stone Sale price¥59,800
ロシア産アレキサンドライト 0.058ctルース

[10/13 22:00 Sale] Russian Alexandrite 0.058ct Loose Stone Sale price¥49,800
アメリカ産ベニトアイト 0.175ctルース

[10/13 22:00 Sale] American Benitoite 0.175ct Loose Stone Sale price¥128,000
アメリカ産ベニトアイト 0.185ctルース

[10/13 22:00 Sale] American Benitoite 0.185ct Loose Stone Sale price¥128,000
K18YG マダガスカル産スフェーン 0.597ct ペンダントトップ（ネックレストップ）

[Available at 10:00 PM on October 13th] 18K Yellow Gold Madagascar Sphene 0.597ct Pendant (Necklace) Sale price¥39,800
パキスタン産ヴェイリネナイト 0.147ctルース 鑑別書

[10/13 22:00 Sale] Pakistani Veirinite 0.147ct Loose Stone with Certificate of Authenticity Sale price¥36,800
ブラジル産アレキサンドライト 0.097ctルース

[On Sale at 10 PM on October 13th] Brazilian Alexandrite 0.097ct Loose Stone (Emerald Cut) Sale price¥38,800
K18PGカナリーイエローダイヤモンド（トリートメント）0.214ct・アレキサンドライトリング 中宝付

[Available at 10:00 PM on October 13th] 18K White Gold and PG Canary Yellow Diamond (Treated) 0.214ct (SI-1, Fancy Intense Greenish Yellow) and Alexandrite Ring Sale price¥128,000
[On Sale at 10 PM on October 13th] Fancy Intense Purple Pink Diamond 0.021ct Loose (FANCY INTENSE PURPLE PINK, SI2)

[On Sale at 10 PM on October 13th] Fancy Intense Purple Pink Diamond 0.021ct Loose (FANCY INTENSE PURPLE PINK, SI2) Sale price¥39,800
[10/13 22:00 Sale] Pt900 Ice Blue Diamond 0.333ct 0.333ct Akoya Pearl 8.0mm Earrings

[10/13 22:00 Sale] Pt900 Ice Blue Diamond 0.333ct 0.333ct Akoya Pearl 8.0mm Earrings Sale price¥98,000
コーネルピン 0.286ctルース

[Posted 12548489] Cornell pin from Tanzania 0.286ct loose Sale price¥19,800
ジンバブエ産ブルーアパタイト（UVタイプ） 1.189ctルース

Zimbabwean Blue Apatite (UV type) 1.189ct loose stone Sale price¥12,800
スターサファイア 1.325ctルース

[12548587 published] Star sapphire from Sri Lanka 1.325ct loose Sale price¥5,980
コーネルピン 0.312ctルース

[Posted 12548486] Cornerpine from Tanzania 0.312ct loose Sale price¥25,800
非加熱ブラジル産パライバトルマリン 0.073ctルース

[12552640] Unheated Brazilian Paraiba Tourmaline 0.073ct loose stone Sale price¥69,800
非加熱ブラジル産パライバトルマリン 0.063ctルース

[12552618] Unheated Brazilian Paraiba Tourmaline 0.063ct loose stone Sale price¥65,800
コロンビア産トラピッチェエメラルド 0.538ct原石

[12551692] Colombian Trapiche Emerald 0.538ct Rough Stone Sale price¥22,800
トリプライト 0.322ctルース

[12551639] Triplite 0.322ct loose stone Sale price¥15,800
スリランカ産サファイアキャッツアイ 3.739ctルース

[Posted 12549094] Sri Lankan sapphire cat's eye 3.739ct loose Sale price¥59,800
イエロートルマリン 0.469ctルース

[Posted in 12548907] Yellow tourmaline 0.469ct loose Sale price¥8,800
ゴーシェナイト 1.080ctルース

[12549595 published] Goshenite 1.080ct loose Sale price¥8,800
パキスタン産トリプライト 0.231ctルース

[Posted 12546182] Triplite 0.231ct loose Sale price¥12,800
ブラジル産デュモルチェライトインクォーツ 0.975ctルース（ファセットカット）

[Posted 12547829] Brazilian Dumortierite in Quartz 0.975ct loose Sale price¥9,800
バイカラートルマリン 0.398ctルース

[12547847 published] Bicolor tourmaline 0.398ct loose Sale price¥8,800
グリーントルマリン 0.869ctルース

[Posted in 12547848] Green tourmaline 0.869ct loose Sale price¥15,800
ピンクトルマリン 0.605ctルース

[12547844 published] Pink tourmaline 0.605ct loose Sale price¥8,800
ピジョンブラッドルビー 0.290ctルース

[On Sale at 10 PM on October 17th] Pigeon Blood Ruby 4.0mm/0.290ct Loose Stone AIGS Sale price¥59,800
パパラチアサファイア 0.376ctルース

[10/17 22:00 Sale] Padparadscha Sapphire 0.376ct Loose Stone Chuhokan Sale price¥55,800
パパラチアサファイア 0.251ctルース

[10/17 22:00 Sale] Padparadscha Sapphire 0.251ct Loose Stone Chuhokan Sale price¥45,800
ブラジル産モルガナイト 0.484ctルース

[10/17 22:00 Sale] Brazilian Morganite 0.484ct Loose Stone Sale price¥12,800
オーストラリア産プレーナイト 1.758ctルース

[10/17 22:00 Sale] Australian Prehnite 1.758ct Loose Stone Sale price¥9,800
ブラジル産アクアマリン 0.428ctルース

[10/17 22:00 Sale] Brazilian Aquamarine 0.428ct Loose Stone Sale price¥8,800
スリランカ産ペリステライト 0.272ctルース

[10/17 22:00 Sale] Sri Lankan Peristerite 0.272ct Loose Stone Sale price¥11,000
ブラジル産モルガナイト 0.377ctルース

[10/17 22:00 Sale] Brazilian Morganite 0.377ct Loose Stone Sale price¥8,800
ロシア産デマントイドガーネット（ホーステール認む） 0.079ctルース

[10/16 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 2.5mm/0.079ct Loose Stone Sale price¥12,800
ロシア産デマントイドガーネット（ホーステール認む） 0.075ctルース

[10/16 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 2.5mm/0.075ct Loose Stone Sale price¥12,800
タンザニア産ペリステライト 0.503ctルース

[On Sale 10/18 10 PM] Tanzanian Peristerite 5.1mm/0.503ct Loose Stone (Rose Cut) Sale price¥9,800
タンザニア産ペリステライト 0.458ctルース

[On Sale 10/18 10 PM] Tanzanian Peristerite 5.1mm/0.458ct Loose Stone (Rose Cut) Sale price¥9,800

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.