Vertical: 2.1 - 3.0mm

【11/2 22時販売】パキスタン産ヴェイリネナイト 0.051ctルース Sale price¥12,800

【10/30 22時販売】アメリカ産オレンジベニトアイト（ピーチベニトアイト） 0.057ctルース鑑別書 Sale price¥69,800

【10/27 22時販売】スリランカ産サファリン 2.8mm/0.102ctルース鑑別書 Sale price¥15,800

【10/28 22時販売】ジンバブエ産ユークレース 0.035ctルース Sale price¥9,800

【10/28 22時販売】ジンバブエ産ユークレース 0.056ctルース Sale price¥14,800

[10/18 10:00 PM Release] Brazilian Microlite 0.066ct Loose Gemstone with Identification Report Sale price¥12,800

[Oct 18, 10:00 PM Sale] Brazilian Microlite 0.055ct Loose Stone with Identification Report Sale price¥25,800

[Available 10/18 at 22:00] Myanmar Poudretteite 0.065ct Loose Gemstone with Identification Report Sale price¥25,800

[Available Oct 18, 10 PM] Myanmar Pezzottaite 0.045ct Loose Gemstone with Identification Report Sale price¥18,800

[Item 12564406] Stibiotantalite from Afghanistan, 0.186ct loose stone Sale price¥45,800

[Item 12564569] Russian Non-Oiled Emerald 0.121ct Loose Gemstone Sale price¥49,800

[Item 12564624] Tanzanian Cobalt Spinel 0.094ct Loose Gemstone Sale price¥47,800

[10/13 10:00 PM Release] Tanzanian Cobalt Spinel 2.7mm/0.100ct Loose Stone with Identification Report Sale price¥39,800

[Available 10/11 at 10 PM] Tanzanian Cobalt Spinel 2.3mm/0.070ct Loose Gemstone with Identification Report Sale price¥22,800

[Available 10/9, 10 PM] Tanzanian Cobalt Spinel 2.1mm / 0.053ct Loose Gemstone with Identification Report Sale price¥19,800

[10/9 10 PM Sale] Russian Non-Oiled Emerald 0.061ct Loose Stone Sale price¥35,800

[Ref: 12564102] Pink Sapphire from Sri Lanka, 0.142ct loose stone Sale price¥9,800

[Available Oct 3, 10 PM] Pakistani Väyrynenite 0.066ct Loose Gemstone Sale price¥14,800

[Available 10/3, 10 PM] Pakistani Väyrynenite 0.095ct Loose Gemstone Sale price¥19,800

[Available 10/3, 10:00 PM] Afghan Hauyne 0.067ct Loose Stone Sale price¥12,800

ブルーダイヤモンド 0.064ctルース(FANCY LIGHT GREEN BLUE, VS-1)

[9/14 (Mon) 10:00 AM Deadline: Lottery Sale_05] Blue Diamond 0.064ct Loose Stone (FANCY LIGHT GREEN BLUE, VS-1) Sale price¥298,000

[Available 9/19 at 10 PM] Jeremejevite from Namibia, 0.054ct loose stone with identification report Sale price¥14,800

[Available 9/19 at 22:00] Jeremejevite from Namibia, 0.045ct Loose Stone with Identification Report Sale price¥15,800

[Available 9/20 at 10:00 PM] Brazilian Alexandrite 0.054ct Loose Gemstone Sale price¥12,800

【Available 9/22, 10:00 PM】 Colombian Emerald 0.078ct Loose Gemstone Sale price¥18,800

Diamond 0.128ct loose stone (cabochon cut, maroon cut) Sale price¥45,800

[On sale 9/13 at 22:00] Bi-color Euclase from Zimbabwe, 0.075ct loose stone with identification report Sale price¥18,800

[Lottery Sale ②_202608_02] Unheated Kashmir Sapphire 2.6mm/0.110ct Loose Stone GIA Sale price¥79,800

Bicolor Euclase from Zimbabwe 0.033ct loose Sale price¥18,800

Brazilian Paraiba Tourmaline 0.037ct Loose (CuO:1.9%, MnO:2.3%) Sale price¥29,800

Russian rough diamond (sawable) 0.098ct loose Sale price¥22,800

Russian rough diamond (sawable) 0.101ct loose Sale price¥22,800

[Sale starts August 25th at 10 PM JST] Madagascar Pezzottaite 2.7mm/0.062ct Loose Gemstone Sale price¥11,000

【12563130 Posted】 Nigerian CobaltGahnite 0.176ct Loose Sale price¥24,800

[Lottery Sale 0628_08] Unheated Kashmir Sapphire 0.160ct Loose GIA Sale price¥98,000

Loose White Diamond 0.108ct (FANCY WHITE, I-1) Sale price¥55,800

Brazilian Paraiba Tourmaline 0.068ct loose stone Sale price¥61,800

【#202607 Akihabara Pop-up Store - Currently Removed from Stock】【Listed on 12563127】Nigerian Cobalt Hausmannite 0.147ct Loose Sale price¥22,800

[Sale starts 8/14 at 10 PM JST] Pakistani Lazulite (blue spar) 0.056ct Loose Gemstone with Certificate Sale price¥11,800

[On sale 8/9 at 10 PM] Pakistani Lapis Lazuli (Lazurite) 0.063ct Loose Stone with Certificate Sale price¥14,800

[Sale at 10 PM on August 9] Pakistan Lazurite (Lapis Lazuli) 0.054ct Loose Gemstone with Certificate Sale price¥12,800

[Sale on August 9 at 10 PM] Pakistani Lazurite (Lapis Lazuli) 0.052ct Loose Stone with Certificate Sale price¥12,800

ピンクダイヤモンド 2.2mm/0.044ctルース(FANCY LIGHT PURPLE PINK, SI1)

Pink Diamond 2.2mm/0.044ct Loose Stone (FANCY LIGHT PURPLE PINK, SI-1) Sale price¥39,800

ピンクダイヤモンド 0.073ctルース(FANCY LIGHT PURPLE PINK, SI2)

Pink Diamond 0.073ct Loose (FANCY LIGHT PURPLE PINK, SI-2) Sale price¥39,800

Colombia Emerald Cat's Eye 0.060ct Loose, Hōki Kyō Sale price¥15,800

マラウイ産ピンクサファイア（マラウイサファイア） 3.0mm/0.128ctルース

[Listed as 12563467] Malawi sapphire 0.128ct loose stone Sale price¥18,800

タンザニア産アヤナスピネル（ホットピンクスピネル）3.0mm/ 0.107ctルース

Tanzanian Ayana spinel (hot pink spinel) 3.0mm/0.107ct loose Sale price¥18,800

ピンクダイヤモンド 0.075ctルース(FANCY PURPLE PINK, SI1)

Pink Diamond 0.075ct Loose (FANCY PURPLE PINK, SI-1) Sale price¥79,800

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.