¥50,000 - ¥100,000

Namibian Jeremejevite 0.501ct loose stone (bicolor) Sale price¥89,800

Namibian Green Tourmaline 7.0mm/1.206ct Loose Stone (Lagoon Tourmaline) Sale price¥59,800

Unheated Brazilian Paraiba Tourmaline 0.081ct loose stone (CuO: 2.1%, MnO: 2.3%) Sale price¥75,800

[On sale June 20 at 10 PM] Zimbabwe Rough Green Diamond (Sawable) 0.228ct Rough (Trigon) Sale price¥79,800

[Sale on June 19th at 10 PM] Mozambican Elbaite Tourmaline/Pink Tourmaline 1.126 ct Loose Stone (CuO: 0.2%, MnO: 2.4%) Sale price¥55,800

[12552038] Beryl Cat's Eye 32.703ct Loose Stone Sale price¥98,000

[12551148] Australian black opal 3.890ct loose stone Sale price¥69,800

[On Sale June 20, 10 PM JST] [Colorfuri] Pt900/K18 Diamond 0.22ct Ring with Certificate Sale price¥98,000

Pt900 ブルーサファイア 1.05ct・ダイヤモンド0.05ctリング鑑別書

[On sale June 20th at 10 PM] Colorful Pt900 Blue Sapphire 1.05ct/Diamond 0.05ct Ring with Appraisal Report Sale price¥98,000

[On sale June 7th at 10 PM] Colombian Trapiche Emerald, 1.874ct Loose Stone, with Identification Report Sale price¥69,800

[Sale on June 6 at 10 PM] Pyrite in Emerald from Chivor Mine, Colombia, 4.221 ct Loose Stone Sale price¥98,000

[On sale June 6th at 10 PM] Brazilian Rubellite 2.793ct Loose Stone with Certificate Sale price¥59,800

ピンクダイヤモンド 0.030ctルース(FANCY PURPLISH PINK, SI-1)

[On Sale 6/5 at 10 PM] Pink Diamond 1.95mm/0.030ct Loose Stone (FANCY PURPLISH PINK, SI-1) Central Gem Lab Sale price¥59,800

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

[On Sale May 31st at 10 PM] Internally Flawless Diamond 4.4mm/0.320ct Loose (G, IF, 3Excellent) GIA Sale price¥89,800

[On sale May 31st at 10 PM] Malawi Blue Zircon (Malawi Zircon) 1.833ct Loose Sale price¥98,000

K18WG クロムトルマリン 0.70ctct・サファイア0.30ctペンダントトップ（ネックレストップ）鑑別書

[On sale 10 PM on 6/14] [Colorful] K18WG Chrome Tourmaline 0.70ct / Sapphire 0.30ct Pendant Top (Necklace Top) with appraisal Sale price¥79,800

[Sale on June 25th at 10 PM] [Colorful] K18WG Zircon Pendant Top (Necklace Top) with Appraisal Report Sale price¥59,800

Paraiba Tourmaline from Brazil, 0.063 ct, loose (CuO: 1.8%, MnO: 2.4%) Sale price¥55,800

Bicolor tourmaline 4.448ct loose stone Sale price¥55,800

[On sale May 31st, 10 PM] Madagascar Padparadscha Sapphire 5.0mm/0.560ct Loose Stone AIGS Sale price¥89,800

[On sale June 2nd, 10 PM] Spanish Sphalerite 4.445ct Loose Stone Sale price¥79,800

Myanmar Star Spinel 2.030ct Loose Sale price¥69,800

Sri Lankan Star Sapphire 7.111ct Loose Sale price¥59,800

Colombian pyrite emerald 3.817ct loose stone Sale price¥59,800

American red beryl 0.160ct loose Sale price¥89,800

Afghanite from Afghanistan 0.617ct loose stone Sale price¥69,800

[On sale May 20th at 10 PM] Tanzanian Pink Zoisite 0.190ct Loose Gemstone with Certificate Sale price¥79,800

Brazilian Indigolite Tourmaline 1.247ct Loose Stone, Japan-Germany Exchange Sale price¥98,000

Colombian Trapiche emerald 0.611ct rough stone Sale price¥59,800

[On sale May 26th, 10 PM] Colorful K18WG Diamond 0.40ct Pendant (Necklace) Sale price¥79,800

Pt900 ブラジル産パライバトルマリン 0.06ct ペンダント（ネックレス）

[On sale 5/26 10 PM] [Colorful] Pt900 Paraiba Tourmaline from Brazil 0.06ct / Diamond 0.18ct Pendant Top (CuO:2.6%, MnO:3.5%) Sale price¥69,800

Pt900 アイスブルーダイヤモンド（トリートメント） 0.256ctct ペンダント（ネックレス）

[On Sale 5/26 at 10 PM] Colorful Pt900 Ice Blue Diamond (Treated) 0.256ct / Diamond 0.06ct Pendant (Necklace) Sale price¥98,000

Pt900 ダイヤモンド 0.65ctct ペンダントトップ（ネックレストップ）

[Colorful] Pt900 Diamond 0.65ct Pendant Top Sale price¥89,800

[On Sale May 12th at 10 PM] Bi-Color Grossular Garnet from Tanzania, 2.057 ct, Loose Stone Sale price¥55,800

インターナリーフローレスダイヤモンド 0.300ctルース(F, IF, 3Excellent)

[Sale on May 12th at 10 PM] Internally Flawless Diamond 4.3mm/0.300ct Loose (F, IF, 3Excellent) GIA Sale price¥98,000

[On Sale May 9th at 10 PM JST] Australian Opal with Matrix, 14.840ct, Loose Stone, Gemstone Report Sale price¥69,800

[On sale 5/4 at 10 PM] Colombian bicolor emerald 0.274ct loose stone Sale price¥98,000

[Sale at 10 PM on May 4] Moroccan Cerussite 1.026ct Loose Stone with Japan-Germany Gemological Report Sale price¥69,800

[On sale May 4th at 10 PM] Brazilian pink euclase 0.310ct loose stone with Japan-Germany gemological report Sale price¥98,000

[On sale May 4th, 10 PM JST] Bicolor Benitoite from USA, 0.624 ct loose stone with鑑別書 Sale price¥98,000

[Sale on May 4, 10 PM] Bolivian Phosphophyllite 1.806ct Loose Stone with Certificate Sale price¥98,000

【Sale from 10 PM on May 3】Australian Boulder Opal 8.020ct Loose Gemstone with Certificate Sale price¥69,800

Spanish sphalerite 6.392 ct loose stone Sale price¥79,800

[Sales Start: May 3rd, 10 PM JST] [Colorflee] Pt900 Lab-Grown Ruby 1.61ct / Diamond 0.25ct Ring (Central Gem Lab Certified) Sale price¥98,000

[Sale from 10 PM on 5/5] [Colorful] K18 Sphene 0.7ct and Diamond 0.03ct Ring with Certification Sale price¥79,800

K18WG イエローサファイア 0.05ct ペンダントトップ（ネックレストップ）

[Calafuri] K18WG Yellow Sapphire 0.05ct Pendant Top (Necklace Top) Sale price¥79,800

[Sale on May 17th at 10 PM] [Colorful] K18 Ruby 0.33ct and Diamond Pendant Top (Necklace Top) with Certificate of Authenticity Sale price¥69,800

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.