Less than 1.0ct

Violet spinel 0.642ct loose Sale price¥6,980

Violet spinel 0.472ct loose Sale price¥8,800

Yellow tourmaline 0.277ct loose Sale price¥6,980

Green tourmaline 0.559ct loose Sale price¥6,980

Pink tourmaline 0.632ct loose Sale price¥9,800

Mexican Hyalite Opal 0.774ct Loose (Faceted Cut) Sale price¥8,800

【12561173掲載】メキシコ産ファイアオパール（ファセットカット） 0.645ctルース

Mexican Fire Opal (faceted) 0.645ct Loose Stone Sale price¥18,800

0.308ct Unset Yellow Sapphire (Sri Lankan) Sale price¥13,800

Lazurite (Lapis Lazuli) from Pakistan 0.173ct Loose Stone with Gemstone Identification Report Sale price¥34,800

[On sale May 2nd at 10 PM] Lazurite from Pakistan 0.150ct Loose Stone with Certificate Sale price¥29,800

[On sale 5/9 10 PM] Lazurite from Pakistan 0.103ct Loose with identification report Sale price¥19,800

[Sale on 5/6 at 22:00] Namibian Jeremejevite 0.073ct Loose Stone with Certificate Sale price¥15,800

Oregon Sunstone from the United States 0.941ct loose stone Sale price¥12,800

Brazilian Bicolor Tourmaline 0.780ct Loose Sale price¥12,800

0.904ct Datolite, USA (Westfield, Manchester) Loose, with Japan-Germany certification Sale price¥29,800

[12562802 posted] Chinese Cinnabar (Shansha) 0.935 ct Loose Sale price¥15,800

[Sale on May 5th at 10 PM] Tanzanian Spessartine Garnet 0.417ct Loose Gemstone Sale price¥12,800

[On sale May 10th at 10 PM] Tanzanian Spessartine Garnet 0.359ct Loose Stone Sale price¥9,800

Afghanite 0.447ct loose stone from Afghanistan, Japan-Germany Sale price¥5,980

Brown Diamond 6.5mm/0.989ct Loose Stone (FANCY DARK ORANGE BROWN, SI-2) Sale price¥98,000

Benitoite from the USA, 3.4mm/0.175ct loose Sale price¥98,000

Ceylon Blue Sapphire (Ice Blue) 0.289ct Loose Sale price¥9,800

[On sale May 5th at 10 PM JST] Madagascar Blue Sapphire 0.413ct Loose Gemstone Sale price¥15,800

【12555695掲載】ブラジル産パライバトルマリンインクォーツ 0.313ctルース

Brazilian Paraiba Tourmaline In Quartz 0.50mm/.313ct Loose Sale price¥15,800

[Sale begins May 5, 10 PM JST] Brazilian euclase 0.210ct loose stone with GIA certificate Sale price¥18,800

【Available 5/5 at 10 PM JST】Zimbabwe Bicolor Euclase 3.0mm/0.106ct Loose Stone Sale price¥23,800

[On sale May 5th at 10 PM] Zimbabwean Bicolor Euclase 2.9mm/0.102ct Loose Stone Sale price¥22,800

Unheated Brazilian Paraiba tourmaline 0.110ct loose AIGS Sale price¥258,000

【ダンデライオンカット】モンゴル産カラーチェンジアンデシン 6.0mm/0.774ctルース

[Dandelion Cut] Mongolian Color-Change Andesine 6.0mm/0.774ct Loose Gemstone Sale price¥49,800

ピンクダイヤモンド 0.034ctルース(FANCY PURPLE PINK, I-1)

Pink Diamond 2.1mm/0.034ct Loose (FANCY PURPLE PINK, I-1) Sale price¥34,800

American Benitoite 0.242ct Loose Sale price¥158,000

ブラジル産パライバトルマリン 0.101ctルース（CuO:0.9%,MnO:0.1%）

Paraiba Tourmaline from Brazil 0.101ct Loose Stone (CuO: 0.9%, MnO: 0.1%) Sale price¥39,800

Iolite Sunstone from India 0.472ct Loose Gemstone Sale price¥5,980

ピンクダイヤモンド（トリートメント） 0.095ctルース(FANCY PURPLISH PURPLISH PINK, SI1)

Pink Diamond (Treated) 0.095ct Loose (FANCY VIVID PURPLISH PINK, SI1) Sale price¥26,800

ピンクダイヤモンド 0.074ctルース(FANCY LIGHT PURPLE PINK, I-1)

Pink Diamond 0.074ct Loose (FANCY LIGHT PURPLE PINK, I-1) Sale price¥39,800

Unheated Brazilian Bi-Color Paraiba Tourmaline 0.105ct Loose Stone GIA (CuO:2.2% MnO:1.2%) Sale price¥198,000

0.079ct Loose Brazilian Paraiba Tourmaline (CuO: 1.6% MnO: 2.8%) Sale price¥29,800

Paraiba Tourmaline Loose Stone from Brazil 0.068ct (CuO: 1.1% MnO: 0.1%) Sale price¥45,800

Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:1.2% MnO:1.2%) Sale price¥35,800

Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:1.4% MnO:1.1%) Sale price¥35,800

Brazilian Paraiba Tourmaline 0.051ct Loose Stone (CuO:1.1% MnO:0.6%) Sale price¥35,800

Brazilian Paraiba Tourmaline 0.048ct (CuO:1.5% MnO:1.0%) Sale price¥35,800

Brazilian Paraiba Tourmaline 0.047ct Loose Stone (Batalha Mine, CuO:0.7% MnO:1.9%) Sale price¥35,800

Indonesian Parasitic Peridot 0.276ct Loose Stone Sale price¥98,000

Colombian emerald with pyrite 0.248ct rough stone Sale price¥12,800

Brazilian Dumortierite in Quartz 0.387ct loose stone Sale price¥3,980

Madagascar Pezzottaite 0.229ct loose stone Sale price¥15,800

【12562577掲載】ケニア産バイカラーグロッシュラーガーネット 0.790ctルース

Bi-color grossular garnet (bi-color tsavorite) from Kenya, 0.790 ct loose stone Sale price¥24,800

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.