Vertical: 3.1 - 4.0mm

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.082ctルース

[On sale May 12th at 10 PM] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.082ct Loose Stone Sale price¥8,800

フローレスダイヤモンド（H&C） 0.230ctルース(D, FL, 3Excellent H&C)

[On sale May 12, 10 PM JST] Flawless Diamond (H&C) 4.0mm/0.230ct Loose Stone (D, FL, 3Excellent H&C) GIA&CGL Sale price¥158,000

フローレスダイヤモンド（H&C） 0.210ctルース(D, FL, 3Excellent H&C)

[On sale May 12, 10 PM JST] Flawless Diamond (H&C) 3.8mm/0.210ct Loose (D, FL, 3Excellent H&C) GIA & Central Gem Lab Sale price¥148,000

【32501908掲載】ブラウンダイヤモンド 0.290ctルース(FANCY BROWN, SI-2)

Loose Brown Diamond 0.290ct (FANCY BROWN, SI-2) Sale price¥15,800

Diamond 3.7mm/0.318ct Loose (F, SI-1, Princess Cut) Sale price¥49,800

Colombian mint color emerald 0.136ct loose stone Sale price¥6,980

Colombian mint color emerald 0.155ct loose stone Sale price¥7,980

Väyrynenite from Pakistan, 0.146 ct, loose Sale price¥39,800

【32501899掲載】ダイヤモンド 0.167ctルース(G, VS-1, VeryGood)

[On sale May 3 at 10 PM] Diamond 3.5mm/0.167ct Loose Stone (G, VS-1, Very Good) Sale price¥29,800

[On sale 5/27 10 PM] Diamond 3.8mm/0.197ct Loose (E, VVS-1, VeryGood) Sale price¥39,800

【32501896掲載】ダイヤモンド 0.167ctルース(D, VVS-2, VeryGood)

[Sale on May 3rd, 10 PM JST] Diamond 3.5mm/0.167ct Loose Stone (D, VVS-2, VeryGood) Sale price¥37,800

[On sale May 27th at 10 PM] Diamond 3.8mm/0.211ct Loose (E, VS-2, Excellent) Sale price¥49,800

[On Sale May 14th, 10 PM] Diamond 3.8mm/0.216ct Loose (G, VS-1, Excellent) Sale price¥49,800

【32501891掲載】ダイヤモンド 0.207ctルース(F, VS-1, Excellent)

[On sale May 3rd, 10 PM JST] Loose Diamond 3.8mm/0.207ct (F, VS-1, Excellent) Sale price¥35,800

[On sale May 1st at 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.167ct Loose Stone Sale price¥16,800

Madagascar Bekily Blue Garnet (Color Change Garnet) 0.188ct Loose Stone Sale price¥18,800

0.186ct loose Bekily blue garnet (color-change garnet) from Madagascar Sale price¥18,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.213ctルース

[Sale on May 18th at 10 PM] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.213ct Loose Stone Sale price¥22,800

Zimbabwean Euclase 0.058ct loose stone Sale price¥29,800

Zimbabwean Euclase 0.088ct loose stone Sale price¥49,800

Rhodochrosite from Detroit City, USA 3.1mm/0.154ct loose stone Sale price¥19,800

Rhodochrosite from Detroit City, USA 3.2mm/0.150ct loose stone Sale price¥19,800

イエローダイヤモンド 0.071ctルース(FANCY INTENSE ORANGEY YELLOW, SI2)

Fancy intense orangey yellow diamond 0.071ct loose stone (FANCY INTENSE ORANGEY YELLOW, SI2) Sale price¥22,800

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

カメレオンダイヤモンド 0.128ctルース(FANCY LIGHT GRAY GREEN, SI-1)

[Sale on May 9, 10 PM JST] Chameleon Diamond 3.2mm/0.128ct Loose Stone (FANCY LIGHT GRAY GREEN, SI-1) Sale price¥31,800

カメレオンダイヤモンド 0.118ctルース(LIGHT GRAYISH GREENISH YELLOW, VS-2)

Chameleon Diamond 3.1mm/0.118ct Loose Stone (LIGHT GRAYISH GREENISH YELLOW, VS-2) Sale price¥22,800

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

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

Gray Diamond 0.107ct Loose (FANCY GRAY, 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

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

[12551250] Brazilian oil-free emerald 0.120ct loose stone Sale price¥110,000

0.113 ct Zimbabwe Euclase loose gemstone Sale price¥45,800

Gray Diamond 0.158ct Loose (FANCY DARK GRAY, I-1) Sale price¥45,800

Cambodian Blue Zircon 0.348ct Loose Stone Sale price¥6,980

Bicolor Zoisite 0.203ct loose stone Sale price¥8,800

Bicolor Zoisite 0.229ct loose stone Sale price¥6,980

Green tourmaline 0.090ct loose stone Sale price¥5,980

Dioptase from Namibia 0.150ct loose Japanese-German book Sale price¥49,800

Unheated Bicolor Paraiba Tourmaline 0.092ct Loose GIA Sale price¥188,000

Madagascar Blue Sapphire 0.347ct Loose Stone with Appraisal Report Sale price¥25,800

American red beryl 0.184ct loose Sale price¥39,800

American Anthill Garnet 4.0mm/0.359ct Loose 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.