Birthstone list

[10/18 10:00 PM Release] Tanzanian Mandarin Garnet 4.5mm/0.529ct Loose Stone with Identification Report Sale price¥29,800

[Available 10/18 at 10 PM] Ruby 0.185ct Loose Stone with Appraisal Report Sale price¥12,800

[Item 12565148] Ruby 0.552ct Loose Stone Sale price¥14,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.231ctルース

[Item 12565145] Bekily Blue Garnet (Color Change Garnet) from Madagascar, 0.231ct loose stone Sale price¥22,800

[Item 22602848] K14WG Akoya Pearl Earrings with Identification Report Sale price¥19,800

[Item 22602847] Peridot 1.20ct / 1.20ct Earrings with Identification Report Sale price¥49,800

[Item 22602846] K18 Ruby 0.03/0.03ct & Diamond 0.04/0.04ct Earrings with Appraisal Report Sale price¥39,800

K18 白蝶貝猫モチーフダイヤモンド0.01ctペンダントトップ（ネックレストップ）鑑別書

[Available 10/19 at 10 PM] [Color-Full] 18K Gold Mother-of-Pearl Cat Motif Pendant Top with 0.01ct Diamond (Includes Appraisal Report) Sale price¥69,800

【Available Oct 19, 10 PM】【Colori】K18 Pyramid Cut Diamond 0.731ct Ring with Appraisal Report Sale price¥128,000

[Item No. 22602835] K18 Akoya Pearl Earrings with Appraisal Certificate Sale price¥22,800

[Item 12564569] Russian Non-Oiled Emerald 0.121ct Loose Gemstone Sale price¥49,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.620ctルース鑑別書

[Item 12564627] Bekily Blue Garnet (Color-Change Garnet) from Madagascar, 0.620ct Loose Stone Sale price¥69,800

[12560799 Listed] Brazilian Elestial Amethyst 0.819ct Loose Stone Sale price¥9,800

[Item No. 12560796] Brazilian Elestial Amethyst 1.965ct Loose Stone Sale price¥18,800

Brazilian Mint-Colored Tourmaline 0.294ct Loose Stone Sale price¥15,800

Zambian Emerald 0.188ct Loose Stone Sale price¥9,800

Mozambique Almandine Garnet 1.144ct Loose Stone Sale price¥15,800

ケニア産非加熱ゴールドシーンサファイア（スターサファイア） 4.0mm/0.477ctルース鑑別書

[Item 12564325] Kenya Gold Sheen Sapphire (Star Sapphire) 0.477ct Loose Gemstone Sale price¥35,800

Australian Black Opal 0.421ct Loose Stone Sale price¥18,800

インターナリーフローレスダイヤモンド（H&C） 0.320ctルース(D, IF, 3Excellent H&C)

[Deadline: Sat, Oct 3, 10 AM: Lottery Sale ①_07] Internally Flawless Diamond (H&C) 0.320ct Loose Stone (D, IF, 3Excellent H&C) GIA & CGL Certified Sale price¥148,000

[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_02] Diamond (H&C) 4.3mm/0.318ct Loose Stone (H, SI-1, 3Excellent H&C) with CGL Certificate & Sarine Light Report Sale price¥45,800

Pt900 ピンクサファイア0.214ct・ダイヤモンド0.10ctリング鑑別書

[Item 22602724] [Colori] Pt900 Pink Sapphire & 0.10ct Diamond Ring with Appraisal Report Sale price¥79,800

[Ref: 22602726] [Colorful] K18WG Ruby & 0.02ct Diamond Ring with Appraisal Report Sale price¥98,000

Pt900/Pt850 ブラックダイヤモンド0.70ct・ダイヤモンド0.53ctペンダント（ネックレス）鑑別書

[Item 22602733] [Colorfully] Pt900/Pt850 Black Diamond and Diamond 0.53ct Pendant (Necklace) with Identification Report Sale price¥98,000

Pt900 カナリーイエロートルマリン1.42ct・ダイヤモンド0.15ctペンダントトップ（ネックレストップ）鑑別書

[Item 22602731] [Colorifull] Pt900 Canary Yellow Tourmaline & 0.15ct Diamond Pendant Top (Necklace Top) with Identification Report Sale price¥158,000

K18WG エメラルド0.15ct・ダイヤモンド0.12ctペンダントトップ（ネックレストップ）鑑別書

[Item #22602732][Colori] K18WG Emerald & 0.12ct Diamond Pendant Top (Necklace Top) with Appraisal Report Sale price¥39,800

[Posted on 22602707] [Colorful] Pt900 Rubellite 1.308ct Ring Sale price¥158,000

【10/10 10:00 PM Release】《Limited to 3 stones》 Nigerian Aquamarine Gacha (including Santa Maria color / cut by KEN) (Includes 1 KEN garnet) 《Multiple purchase discounts available》 Sale price¥3,980

[Item 12564248] Madagascar Sapphire 0.385ct Loose Stone Sale price¥18,800

[On sale Oct 15, 10 PM] Sri Lankan Moonstone 0.922ct Loose Gemstone Sale price¥12,800

[Available Oct 15 at 10 PM] Sri Lankan Uva Moonstone 6.2mm/0.798ct Loose Gemstone Sale price¥12,800

[On sale 10/15 at 22:00] Moonstone from Uva, Sri Lanka, 6.2mm/0.755ct loose stone Sale price¥12,800

[On sale 10/12 at 22:00] Sri Lankan Uva Moonstone 0.740ct Loose Stone Sale price¥14,800

[10/11 10 PM Sale] Mozambique Aquamarine 3.541ct Loose Gemstone with Identification Report Sale price¥45,800

[Available 10/14 at 10 PM] Russian Demantoid Garnet (horsetail inclusions visible) 0.206ct Loose Gemstone Sale price¥79,800

[10/9 10 PM Sale] Russian Non-Oiled Emerald 0.061ct Loose Stone Sale price¥35,800

[Available 10/14 at 22:00] Russian Emerald 0.247ct Loose Gemstone Sale price¥49,800

[Available 10/11 at 22:00] Colombian Trapiche Emerald 0.981ct Loose Gemstone with Appraisal Report Sale price¥58,800

[Item 12564459] Nepalese Kyanite 1.017ct Loose Gemstone Sale price¥9,800

[Item 12564471] Australian Boulder Opal 4.444ct Loose Gemstone Sale price¥17,800

[Item 12564612] Unheated Bicolor Sapphire from Windsor, Tanzania, 0.620ct Loose Gemstone Sale price¥75,800

[Item 22602808] [Colori] K18WG Diamond Pendant (Necklace) Sale price¥148,000

K18/K18WG イエローダイヤモンド0.30ct ダイヤモンド0.26ct ペンダント（ネックレス）

[Item No. 22602806] [Colorify] K18/K18WG 0.3ct Diamond and 0.26ct Diamond Pendant (Necklace) Sale price¥158,000

K18WG ダイヤモンド 0.5ct クロスモチーフペンダントトップ（ネックレストップ）

[Posted on 22602705] [Colorful] K18WG Diamond 0.5ct Pendant Top (Necklace Top) Sale price¥35,800

【9/ 22:00 Release】《Limited to 13 stones》 Bicolor Sapphire, Avg 0.27ct 《Multi-buy discount available》 Sale price¥7,980

Pt900 ピンクサファイア 0.42ct ダイヤモンド 0.05ctリング日独鑑

[Item 22602811] [Coloriful] Pt900 Pink Sapphire 0.42ct Diamond 0.05ct Ring with Appraisal Report Sale price¥59,800

K18 揺れるダイヤモンド 0.211ct ダイヤモンド0.35ct ペンダント（ネックレス）

[Item 22602804][Colori] K18 0.211ct Diamond & 0.35ct Diamond Pendant (Necklace) Sale price¥158,000

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.