Custom Cut

Spanish Sphalerite 1.127ct loose stone Sale price¥9,800

Pink tourmaline 1.157ct loose stone Sale price¥12,800

Salt and pepper diamond 0.446ct loose Sale price¥39,800

Goshenite 1.040ct loose Sale price¥7,980

Pink tourmaline 0.466ct loose Sale price¥8,800

Sky blue topaz 10.967ct loose Sale price¥18,800

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

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

Zoisite 0.162ct loose stone (heart shape) Sale price¥7,980

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

[Sale at 10 PM on May 22] GGG (Gadolinium Gallium Garnet) 0.511 ct Loose Stone Sale price¥12,800

【Sale starts May 17th, 10 PM JST】Synthetic Alexandrite 0.414ct Loose Stone Sale price¥12,800

[On Sale May 21st, 10 PM] Brazilian Lavender Quartz (Scorolite) 0.952ct Loose Stone Sale price¥9,800

[For sale May 13 at 10 PM] GGG (Gadolinium Gallium Garnet) 4.0mm/0.658ct Loose Stone Sale price¥8,800

【Sales start 5/13 10 PM JST】Sri Lankan Bi-Color Sapphire, 0.434 ct Loose Stone Sale price¥12,800

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

ブラジル産トリカラートルマリン 32.207ctルース (パーティカラートルマリン）

[On sale May 10th at 10 PM] Brazilian Tricolor Tourmaline 32.207ct Loose Stone (Parti-color Tourmaline) Sale price¥398,000

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

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 1.374ctルース

[For sale May 23, 10 PM JST] Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 6.7mm/1.374ct Loose Stone Sale price¥19,800

coming soon

【12562875掲載】奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 2.678ctルース

2.678ct loose rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture Sale price¥15,800

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.656ctルース

【Sale from 10 PM on May 23】Nara Prefecture Tenkawa Village Rainbow Garnet (Andradite Garnet) 4.8mm/0.656ct Loose Stone Sale price¥11,000

【Available 5/9 at 10 PM JST】Brazilian Sky Blue Topaz 0.756ct Loose Gemstone Sale price¥8,800

[On Sale May 9th, 10 PM] Sri Lankan Yellow Sapphire 0.517ct Loose Gemstone Sale price¥12,800

[On sale May 9 at 10 PM JST] Brazilian Sky Blue Topaz 0.802ct Loose Stone Sale price¥9,800

Mica in Quartz 0.865ct Loose Stone Sale price¥5,980

[Sale on April 30, 10 PM JST] Brazilian Indicolite Tourmaline 0.352ct Loose Stone with Certificate Sale price¥29,800

Oregon Sunstone 0.272ct Loose Sale price¥6,980

Oregon Sunstone 0.575ct loose Sale price¥9,800

Lavender quartz (scorolite) 2.181ct loose stone Sale price¥8,800

Lavender quartz (scorolite) 2.740ct loose stone Sale price¥8,800

Sunstone (Illusion Sunstone) 0.553ct Loose Sale price¥7,980

South African Sugilite 0.814ct loose stone Sale price¥12,800

Yellow sapphire 0.229ct loose stone Sale price¥8,800

Spodumene 9.001ct loose stone Sale price¥22,800

Spodumene 9.730ct loose stone Sale price¥22,800

Andalusite 0.672ct loose Sale price¥8,800

Spanish Andalusite 0.440ct loose stone Sale price¥6,980

Spanish Andalusite 0.435ct loose stone Sale price¥6,980

[Koshu Precious Stones Plusthree] Lavender Quartz (Scorolite) 1.761ct Loose Stone Sale price¥29,800

Bicolor Fluorite 0.909ct Loose Sale price¥6,980

Brazilian Imperial Topaz 0.413ct Loose Stone Sale price¥9,800

Brazilian Imperial Topaz 0.402ct Loose Stone Sale price¥9,800

Synthetic Spinel 1.668ct Loose Stone (Synthetic Blue Spinel) Sale price¥12,800

Lepidocrocite in quartz 0.308ct loose Sale price¥6,980

Lepidocrocite in quartz 1.087ct loose Sale price¥5,980

【Sales start: April 20th, 10 PM JST】Tanzanian Bicolor Tanzanite 0.419ct Loose Gemstone Sale price¥14,800

[Sale on April 22 at 10 PM JST] GGG (Gadolinium Gallium Garnet) 3.046ct Loose Stone Sale price¥18,800

[On sale April 22nd at 10 PM] Tanzanian Rhodolite Garnet 5.9mm/1.084ct Loose Gemstone Sale price¥12,800

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.