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宝石ガチャ💎プリンセスカットのトルマリン1石💎 3mm《複数購入割引有》

Gem Gacha💎Princess cut tourmaline 1 stone💎 3mm《Multiple purchase discount available》 Sale price¥2,980
宝石ガチャ💎クッションカットのトルマリン1石💎 4mm《複数購入割引有》

Gem Gacha💎1 cushion cut tourmaline stone💎 4mm《Multiple purchase discount available》 Sale price¥2,980
13-stone diamond half eternity ring set (VS class, D-G color, H&C, 2.0mm)

13-stone diamond half eternity ring set (VS class, D-G color, H&C, 2.0mm) Sale price¥158,000
ブラジル産パライバトルマリンリング・ハーフエタニティリングセット（1.2mm）

Brazilian Paraiba Tourmaline Ring and Half Eternity Ring Set (1.2mm) Sale price¥198,000
[Option] Paraiba tourmaline analysis report attached identification certificate issuance fee

[Option] Paraiba tourmaline analysis report attached identification certificate issuance fee Sale price¥15,000
【10/25 22時販売】《限定7セット》タンザニア産ミントダイオプサイド2石セット（原石＆訳ありルース）《複数購入割引有》

【10/25 22時販売】《限定7セット》タンザニア産ミントダイオプサイド2石セット（原石＆訳ありルース）《複数購入割引有》 Sale price¥5,980
[10/22, 10:00 PM Sale] <limited to stones> Sky Blue Topaz (Round approx. 8mm, only one stone is approx. 10mm) <multiple purchase discount available></multiple></limited>

[10/22, 10:00 PM Sale] Sky Blue Topaz (Round approx. 8mm, only one stone is approx. 10mm) Sale price¥2,580
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》 Sale price¥15,800
【9/12 10 PM Release】《Limited to 16 Stones》 Blue Topaz: New "Milky Way Star Cut" by Mr. Sangé 《Multi-purchase discounts available》

【9/12 10 PM Release】《Limited to 16 Stones》 Blue Topaz: New "Milky Way Star Cut" by Mr. Sangé 《Multi-purchase discounts available》 Sale price¥5,980
《Limited to 2 Stones》Brown Diamond (4mm/0.3ct, with Certificate of Authenticity)《Multiple Purchase Discount Available》

《Limited to 2 Stones》Brown Diamond (4mm/0.3ct, with Certificate of Authenticity)《Multiple Purchase Discount Available》 Sale price¥5,980
《Tucson New Arrival - Limited to 8 Stones》Zambian Canary Yellow Tourmaline Average 0.47ct《Bulk Purchase Discount Available》

《Tucson New Arrival - Limited to 8 Stones》Zambian Canary Yellow Tourmaline Average 0.47ct《Bulk Purchase Discount Available》 Sale price¥7,980
《New Arrivals from Tucson・Limited to 9 Stones》Canary Yellow Tourmaline from Zambia, average 0.18ct《Multi-purchase discount available》

《New Arrivals from Tucson・Limited to 9 Stones》Canary Yellow Tourmaline from Zambia, average 0.18ct《Multi-purchase discount available》 Sale price¥3,980
[Option] Laser engraving of characters and symbols

[Option] Laser engraving of characters and symbols Sale price¥5,000
イエローダイヤモンド 0.188ctルース(FANCY INTENSE YELLOW, VS1)

Yellow diamond 0.188ct loose (FANCY INTENSE YELLOW, VS1) Sale price¥47,800
Limited to 9 stones: Tanzanite loose stone from Tanzania (5x7mm, oval cut) Multiple purchase discounts available

Limited to 9 stones: Tanzanite loose stone from Tanzania (5x7mm, oval cut) Multiple purchase discounts available Sale price¥12,800
Limited to 6 stones: 1 loose Madagascar needle-in topaz (average 2.1 carats) Multiple purchase discounts available

Limited to 6 stones: 1 loose Madagascar needle-in topaz (average 2.1 carats) Multiple purchase discounts available Sale price¥4,980
Limited to 8 stones: Swiss blue topaz (4mm, rose cut) 1 loose stone. Discounts available for multiple purchases.

Limited to 8 stones: Swiss blue topaz (4mm, rose cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥3,980
ブラジル産パーティカラートルマリン 11.847ctルース

[Lottery Sale #2_202608_13] Brazilian Tetracholor Tourmaline 11.847ct Loose Stone with Certificate Sale price¥258,000
バイカラートルマリン 0.914ルース

Brazilian bicolor tourmaline 0.914ct loose stone Sale price¥12,800
タンザナイト 1.36ルース

Tanzanian Tanzanite 1.36ct Loose Sale price¥49,800
ピンクトルマリン 0.543ルース

Madagascar Pink Tourmaline 0.543ct Loose Stone Sale price¥12,800
ブラジル産インディゴライトトルマリン 1.027ctルース

[Lottery Sale_07][For Winners Only][Item No. 12564402] Brazilian Indicolite Tourmaline 1.027ct Loose Stone with Appraisal Report Sale price¥98,000
[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_03] Diamond (H&C) 4.5mm/0.353ct Loose Stone (E, VS-2, 3Excellent H&C) Includes CGL Report & Sarine Light Report

[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_03] Diamond (H&C) 4.5mm/0.353ct Loose Stone (E, VS-2, 3Excellent H&C) Includes CGL Report & Sarine Light Report Sale price¥79,800
[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_04] Diamond (H&C) 4.5mm/0.345ct Loose Stone (G, VS-2, 3Excellent H&C) CGL Certified

[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_04] Diamond (H&C) 4.5mm/0.345ct Loose Stone (G, VS-2, 3Excellent H&C) CGL Certified Sale price¥69,800
ブラジル産パライバトルマリン 3.2mm/0.152ctルース（CuO:1.1% MnO:0.6%）

[Deadline: Mon, 9/14, 10:00 AM: Lottery Sale_06] Brazilian Paraiba Tourmaline 3.2mm/0.152ct Loose Stone (CuO: 1.1% MnO: 0.6%) Sale price¥158,000
ブラジル産ホワイトトパーズ（ニードルイントパーズ） 4.086ctルース

Madagascar White Topaz (Needle-in Topaz) 4.086ct Loose Sale price¥15,800
ブラジル産ルベライト 3.844ctルース

Brazilian Rubellite (Red Tourmaline) 3.844ct Loose Stone Sale price¥128,000
グリーントルマリン 0.703ctルース

Brazilian Green Tourmaline 0.703ct Loose Stone Sale price¥15,800
グリーントルマリン 0.764ctルース

Brazilian Green Tourmaline 0.764ct Loose Stone Sale price¥8,800
ホワイトトパーズ 2.404ctルース

[12555443] White topaz 2.404ct loose stone Sale price¥9,800
ダイヤモンド 3.7mm/0.200ctルース(E, VS-2, 3Excellent) GIA

[Deadline: Sat, Oct 3, 10:00 AM: Lottery Sale ①_01] Diamond 3.7mm/0.200ct Loose Stone (E, VS-2, 3Excellent) GIA Sale price¥35,800
ブラジル産バイカラートルマリンキャッツアイ 22.056ctルース

Brazilian bicolor tourmaline cat's eye 22.056ct loose stone Sale price¥188,000
バイカラートルマリン 3.429ctルース

Congo Bicolor Tourmaline 3.429ct Loose Sale price¥98,000
ダイヤモンド（カボションカット） 0.183ctルース

Diamond (cabochon cut) 0.183ct loose Sale price¥24,800
ブラジル産パライバトルマリンインクォーツ 2.827ctルース

Brazilian Paraiba Tourmaline in Quartz 2.827ct loose stone Sale price¥45,800
ブラジル産パライバトルマリンインクォーツ 0.284ctルース

Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.284ct Loose Stone Sale price¥19,800
ブラジル産パライバトルマリンインクォーツ 1.146ctルース

Brazilian Paraiba Tourmaline in Quartz 1.146ct Loose Stone Sale price¥25,800
ブラジル産パライバトルマリンインクォーツ 1.287ctルース

Brazilian Paraiba Tourmaline in Quartz 8.0mm/1.287ct Loose Stone Sale price¥25,800
Elbaite tourmaline from Mozambique 2.082ct loose stone (CuO: 0.1%, MnO: 1.4%)

Elbaite tourmaline from Mozambique 2.082ct loose stone (CuO: 0.1%, MnO: 1.4%) Sale price¥55,800
Colombian Trapiche Emerald 1.494ct Loose

Colombian Trapiche Emerald 1.494ct Loose Sale price¥69,800
非加熱ブラジル産パライバトルマリン 0.068ctルース（CuO:1.4%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.068ct loose stone (CuO: 1.4%, MnO: 2.3%) Sale price¥45,800
インペリアルトパーズ 0.764ctルース

Brazilian Imperial Topaz 0.764ct Loose Stone Sale price¥18,800
バイカラートルマリン 0.845ctルース

Brazilian bicolor tourmaline 0.845ct loose stone Sale price¥12,800
Pt850 ダイヤモンド 1.0ct ブレスレット鑑別書

【11/5 22時販売】【カラフリ】Pt850 ダイヤモンド 1.0ct ブレスレット鑑別書 Sale price¥128,000
トルマリン 0.858ctルース

Brazilian Tourmaline 0.858ct Loose Stone Sale price¥15,800
ピンクトルマリン 0.844ctルース

Brazilian pink tourmaline 0.844ct loose stone Sale price¥18,800
ブラジル産グリーントルマリン 1.059ctルース

Brazilian Green Tourmaline 1.059ct Loose Stone Sale price¥15,800

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.