colored stone loose

A list of colored stones and loose gemstones.

[On sale June 7, 10 PM] Untreated Blue Sapphire 2.430ct Loose Gemstone GIA Sale price¥258,000

[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 7th, 10 PM] Limited to 15 Stones: Afghan Pink Diaspore Single Stone Loose Gemstone (Avg. 0.3ct) - Multiple Purchase Discount Available Sale price¥3,980

[On Sale June 6th]《Limited to 9 Stones》Brazilian Amethyst Single Stone Loose (Includes Elestial and Bi-Color Amethyst)《Bulk Purchase Discount Available》 Sale price¥3,980

[Sale 10 PM JST, June 7] Alexandrite from Odisha, India 0.764 ct Loose Stone with Certificate Sale price¥29,800

[On sale June 7th at 10 PM] India Odisha Alexandrite 0.759ct Loose Gemstone with Identification Report Sale price¥22,800

[On Sale June 8th, 10 PM JST] India, Orissa Origin Alexandrite 0.715ct Loose Stone with Certification Sale price¥18,800

[On sale June 6th, 10 PM] Nepal Kyanite 2.906ct Loose Stone with Certificate Sale price¥19,800

[On sale June 6th, 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 4.098ct Loose Stone with Japan-Germany Gemological Report Sale price¥24,800

[On sale June 6th at 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 3.210ct Loose Stone, GIA & JGGL Certified Sale price¥19,800

[Sale on 6/6 at 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 2.556ct Loose Stone with Japan-Germany Gemstone Report Sale price¥15,800

[Sales start June 5th, 10 PM] Russian Demantoid Garnet (horsetail inclusion visible) 6.8mm/1.366ct Loose Stone with Appraisal Report Sale price¥398,000

[On sale June 5th at 10 PM] Russian Demantoid Garnet (Horsetail inclusion confirmed) 6.9mm/1.589ct Loose Stone with Appraisal Report Sale price¥458,000

[On sale June 6th at 10 PM] Malawi Moonstone (Malawi Moonstone) 2.428 ct Loose Sale price¥18,800

[On sale June 6, 10 PM JST] Malawi Moonstone 2.233ct Loose Stone Sale price¥15,800

[Sale on June 6 at 10 PM] Malawi Moonstone (Malawi Moonstone) 2.209 ct loose stone Sale price¥15,800

[On sale June 6th at 10 PM] Malawi Moonstone 2.201ct Loose Stone Sale price¥15,800

[On sale June 12th at 10 PM] Malawi Moonstone 2.144ct Loose Sale price¥15,800

[Sales start June 12th, 10 PM] Malawi Moonstone (Malawi Moonstone) 2.085ct Loose Gemstone Sale price¥16,800

[On sale June 13th, 10 PM JST] Malawi Moonstone 2.055ct Loose Stone Sale price¥16,800

[On sale June 7th at 10 PM] Malawi Moonstone 1.792ct Loose Gemstone Sale price¥15,800

[Sale at 10 PM on June 6] Malawi Moonstone 1.661ct Loose Stone Sale price¥12,800

[Sale on June 5th at 10 PM] Sri Lankan Zircon Cat's Eye 2.087ct Loose Stone with Appraisal Sale price¥39,800

[On sale 6/5 at 10 PM] Russian Demantoid Garnet (horsetail inclusion visible) 5.8mm/0.876ct Loose Stone with Appraisal Report Sale price¥258,000

[On sale May 31 at 10 PM] Myanmar Musgravite 0.351ct Loose Gemstone, Japan-Germany Sale price¥128,000

【Sales start May 30th, 10 PM JST】 Malawi Moonstone 2.601ct Loose Sale price¥5,980

[On sale May 31st at 10 PM] Malawi Bicolor Zircon (Malawi Zircon) 0.985 ct Loose Sale price¥39,800

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

[On Sale May 30th at 10 PM] Malawi Moonstone 1.475ct Loose Gemstone Sale price¥9,800

[On sale May 30th at 10 PM] Mongolian Andesine 0.464ct Loose Stone Sale price¥9,800

[Sales start May 31, 10 PM JST] Brazilian Marcasite in Quartz Loose Stone 6.670ct Sale price¥25,800

[Sale on May 30th at 10 PM] Synthetic Rutile 6.2mm/1.594ct Loose Stone Sale price¥15,800

【Available May 30th at 10 PM】Sugilite from South Africa, 0.786 ct Loose Stone Sale price¥12,800

Ruby 0.820ct Loose Gem (Hohki-kyo) Sale price¥39,800

【Sale starts May 28th at 10 PM JST】Brazilian Paraiba Tourmaline Loose Stone 0.239ct (CuO: 0.8%, MnO: 3.7%) Sale price¥45,800

ブラジル産パライバトルマリン 3.1mm/0.151ctルース（CuO:1.1%、MnO:3.8%）

[On sale May 28th, 10 PM JST] Brazilian Paraiba Tourmaline 3.1mm/0.151ct Loose Stone (CuO: 1.1%, MnO: 3.8%) Sale price¥29,800

ブラジル産パライバトルマリン 0.265ctルース（CuO:0.7%、MnO:3.0%）

[On sale May 28, 10 PM JST] Brazilian Paraiba Tourmaline 0.265ct Loose Stone (CuO: 0.7%, MnO: 3.0%) Sale price¥29,800

ブラジル産パライバトルマリン 0.205ctルース（CuO:0.8%、MnO:3.1%）

【Sale starts May 28th at 10 PM JST】Brazilian Paraiba Tourmaline 0.205ct Loose Stone (CuO: 0.8%, MnO: 3.1%) Sale price¥39,800

ブラジル産パライバトルマリン 0.211ctルース（CuO:0.6%,MnO:3.1%）

[On sale May 28 at 10 PM] Brazilian Paraiba Tourmaline 0.211ct Loose Stone (CuO:0.6%, MnO:3.1%) Sale price¥39,800

Blue watermelon tourmaline 6.815ct loose Sale price¥49,800

Brazilian Paraiba Tourmaline 0.065ct Loose Stone (CuO: 2.0%, MnO: 2.4%) Sale price¥49,800

0.066ct loose Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 2.2%) Sale price¥45,800

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

Loose 0.061ct Brazilian Paraiba Tourmaline (CuO: 1.7%, MnO: 2.2%) Sale price¥49,800

Brazilian Paraiba Tourmaline 0.055ct Loose (CuO:1.9%, MnO:2.2%) Sale price¥45,800

Paraiba Tourmaline from Brazil 0.056ct loose stone (CuO: 1.7%, MnO: 2.3%) Sale price¥45,800

0.062ct Loose Paraiba Tourmaline from Brazil (CuO: 1.7%, MnO: 2.5%) Sale price¥47,800

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.