Vertical: 4.1 - 5.0mm

Brazilian Blue Tourmaline 0.196ct Loose Sale price¥6,980

[Sales on 6/13 at 10 PM] Madagascar Pink Sapphire 0.239ct Loose Stone, Japan-Germany Gemstone Institute certified Sale price¥18,800

[Sale starts June 16th, 10 PM JST] Myanmar Red Spinel 0.234ct Loose Gemstone Sale price¥12,800

[On Sale June 16, 10 PM] Loose 0.249ct Myanmar Red Spinel Sale price¥12,800

[Sale June 15th 10 PM JST] Afghanistan Hauyne 0.098ct Loose Stone with Gemstone Identification Report Sale price¥25,800

[On sale June 14, 10 PM JST] Madagascar Bi-Color Sapphire 4.5mm/0.506ct Loose Stone Sale price¥7,980

[On sale June 13th at 10 PM] Blue Sapphire 0.369ct Loose Stone (with Japan-Germany gemological report) Sale price¥22,800

【Sales start June 14, 10 PM JST】Andalusite from Spain 4.5mm/0.347ct Loose Sale price¥8,800

[On Sale June 13th, 10 PM JST] Brazilian Santa Maria Aquamarine 0.215 ct Loose Stone with Appraisal Report Sale price¥15,800

[Sale on June 13th at 10 PM] Brazilian Santa Maria Aquamarine 0.183ct Loose Stone with Certification Sale price¥12,800

Brazilian Pink Tourmaline 0.470ct Loose Stone Sale price¥9,800

[On Sale June 7, 10 PM] 0.210ct Untreated Colombian Emerald Loose Stone, GIA Certified Sale price¥228,000

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

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 June 12, 10 PM JST] Madagascar Padparadscha Sapphire 4.1mm/0.396ct Loose Stone DGL Certified Sale price¥52,800

[Sale on June 13th at 10 PM] Ruby 0.820ct Loose Stone - Hogikyo Sale price¥39,800

Color change sapphire 0.473ct loose stone (purple sapphire) Sale price¥25,800

Madagascar Yellow Sapphire 4.4mm/0.417ct Loose Sale price¥14,800

[On sale May 30th at 10 PM] Afghan Hackmanite, 0.093ct loose stone Sale price¥16,800

【Sale Starts May 30th at 10 PM JST】Brazilian Seafoam Tourmaline 4.1mm/0.303ct Loose Stone Sale price¥16,800

[On sale May 30th at 10 PM] Brazilian Seafoam Tourmaline 4.2mm/0.319ct Loose Stone Sale price¥17,800

[On sale May 31, 10 PM JST] Brazilian Seafoam Tourmaline 4.1mm/0.280ct Loose Sale price¥15,800

[On sale June 6, 10 PM JST] Brazilian Seafoam Tourmaline 0.334ct Loose Stone Sale price¥16,800

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

Madagascar sphene 0.569ct loose stone Sale price¥6,980

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

Mozambique Aquamarine 0.216ct Loose Stone Sale price¥6,980

American Peridot 0.339ct Loose Stone Sale price¥6,980

[Sale on 5/24 at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.1mm/0.490ct Loose Stone Sale price¥15,800

[On sale May 24th, 10 PM JST] Burmese Ice Jadeite 4.2mm/0.346ct Loose Stone Sale price¥8,800

Tanzanian Kornerupine 0.210ct loose stone Sale price¥11,000

Tanzanian Kornerupine 0.220ct loose stone Sale price¥6,980

Tanzanian Kornerupine 0.229ct loose stone Sale price¥9,800

Tanzanian Kornerupine 0.201ct loose stone Sale price¥14,800

Tanzanian Kornerupine 0.200ct Loose Stone Sale price¥9,800

[On sale June 7th at 10 PM] Nepal Green Kyanite 0.764ct Loose Stone Sale price¥6,980

Purple Spinel 4.3mm/0.323ct Loose Stone Sale price¥6,980

Violet spinel 0.301ct loose Sale price¥6,980

Tanzania Zoisite 0.278ct loose stone Sale price¥7,980

Zoisite 0.216ct loose stone (heart shape) Sale price¥7,980

Zoisite 0.247ct loose stone (heart shape) Sale price¥7,980

[On Sale June 3rd, 10 PM JST] Andalusite from Spain, 0.425 ct Loose Stone Sale price¥9,800

[Sale begins May 18th, 10 PM JST] Chinese Cinnabar (Hunan Province) 0.867ct Loose Stone with Certification Sale price¥13,800

[On sale May 15, 10 PM JST] Chinese Cinnabar from Hunan Province, 0.842ct Loose Stone with Certificate Sale price¥15,800

[On Sale May 17th at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.3mm/0.582ct Loose Stone Sale price¥15,800

【On sale May 15 at 10 PM】Sri Lankan Chrysoberyl Cat's Eye 4.5mm/0.419ct Loose Stone Sale price¥15,800

[On sale May 22nd at 10 PM] Synthetic Alexandrite 4.3mm/0.379ct Loose Stone 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.