Less than 1.0ct

Colombian mint color emerald 0.297ct loose stone Sale price¥9,800

Unheated Brazilian Paraiba Tourmaline 0.053ct loose stone (CuO: 1.4%, MnO: 3.1%) Sale price¥62,800

Tanzanian Kornerupine 0.154ct loose stone Sale price¥12,800

[Posted 12548743] Cornellpine from Tanzania 0.181ct loose Sale price¥29,800

[12549597 published] Goshenite 0.439ct loose Sale price¥5,980

[12550864] 0.227ct loose zoisite from Tanzania Sale price¥6,980

[Updated 12552163] Benitoite 0.099ct loose stone Sale price¥34,800

【スタッフセレクション】マダガスカル産バイカラーサファイア 0.330ctルース（セミオーダーメイドセット）

[Staff Selection] Madagascar Bicolor Sapphire 0.330ct Loose (Semi-Custom Made Set) Sale price¥47,800

[12550865] 0.203ct loose zoisite from Tanzania Sale price¥6,980

【スタッフセレクション】　【KEN氏】タンザニア産アイオライト 3.7mm/0.150ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Tanzanian Iolite 3.7mm/0.150ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

Mica in Quartz 0.758ct Loose Stone Sale price¥6,980

Myanmar Violet Spinel 0.426ct Loose Sale price¥8,800

モザンビーク産パライバトルマリン 0.784ctルース（CuO:0.3%,MnO:1.3%）

[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone Sale price¥128,000

Paraiba Tourmaline from Mozambique 0.360ct loose stone Sale price¥18,800

American Red Beryl 0.147ct Loose Sale price¥39,800

非加熱ブラジル産パライバトルマリン 0.065ctルース（CuO:1.6%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.065ct loose stone (CuO: 1.6%, MnO: 2.4%) Sale price¥69,800

American Red Beryl 0.132ct Loose Sale price¥33,800

Colombian Trapiche Emerald 0.488ct Loose Sale price¥25,800

【KEN氏】ブラジル産グリーントルマリン 5.2mm/0.584ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Brazilian Green Tourmaline 5.2mm/0.584ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

Russian rough diamond (sawable) 0.117ct loose Sale price¥29,800

Russian rough diamond (sawable) 0.101ct loose Sale price¥25,800

Pakistani Oil in Quartz 0.438ct Loose Stone Sale price¥9,800

South African diamond rough (sawable) 0.110ct rough Sale price¥25,800

South African diamond rough (sawable) 0.091ct rough Sale price¥22,800

South African diamond rough (sawable) 0.085ct rough Sale price¥19,800

Madagascar Blue Sapphire 0.401ct Loose Sale price¥14,800

Madagascar sapphire 0.448ct loose stone Sale price¥19,800

【スタッフセレクション】【KEN氏】ミャンマー産スピネル 0.482ctルース（セミオーダーメイドセッ

[Staff Selection] [Mr. KEN] Myanmar Spinel 0.482ct Loose (Semi-Custom Made Set) Sale price¥47,800

【スタッフセレクション】タンザニア産タンザナイト 0.262ctルース（セミオーダーメイドセッ

[Staff Selection] Tanzanite 0.262ct loose stone from Tanzania (semi-custom made set) Sale price¥74,800

【スタッフセレクション】【KEN氏】タンザニア産グリーンサファイア 0.258ctルース（セミオーダーメイドセッ

[Staff Selection] [Mr. KEN] Tanzanian Green Sapphire 0.258ct Loose (Semi-Custom Made Set) Sale price¥47,800

【スタッフセレクション】【KEN氏】タンザニア産ピンクトルマリン 0.290ctルース（セミオーダーメイドセッ

[Staff Selection] [Mr. KEN] Tanzanian Pink Tourmaline 0.290ct Loose (Semi-Custom Made Set) Sale price¥74,800

【スタッフセレクション】【KEN氏】タンザニア産オレンジジルコン 0.650ctルース（セミオーダーメイドセッ

[Staff Selection] [Mr. KEN] Tanzanian orange zircon 0.650ct loose stone (semi-custom made set) Sale price¥47,800

【スタッフセレクション】マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.450ctルース（セミオーダーメイドセッ

[Staff Selection] Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.450ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

[Staff Selection] Brazilian Santa Maria Aquamarine 5.1mm/0.523ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

[Staff Selection] Brazilian Green Tourmaline 0.475ct Loose (Semi-Custom Made Set) Sale price¥47,800

[Staff Selection] [Mr. KEN] Tanzanian Iolite 5.5mm/0.589ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

Diamond (cabochon cut) 0.206ct loose Sale price¥55,800

Brazilian alexandrite 0.120ct loose Sale price¥15,800

Brazilian Alexandrite 0.106ct Loose Stone (Silky Alexandrite) Sale price¥15,800

Brazilian alexandrite 0.116ct loose Sale price¥15,800

Unheated Brazilian Paraiba Tourmaline 0.072ct loose stone (CuO: 1.8%, MnO: 2.3%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.069ct loose stone (CuO: 2.1%, MnO: 2.1%) Sale price¥88,800

Unheated Brazilian Paraiba Tourmaline 0.052ct loose stone (CuO: 2.0%, MnO: 2.2%) Sale price¥55,800

非加熱ブラジル産パライバトルマリン 0.051ctルース（CuO:1.9%、MnO:2.5%）

Unheated Brazilian Paraiba Tourmaline 0.051ct loose stone (CuO: 1.9%, MnO: 2.5%) Sale price¥55,800

Namibian Jeremejevite 0.501ct loose stone (bicolor) Sale price¥98,000

Ethiopian Opal 0.629ct Loose (Sphere) Sale price¥7,980

アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.585ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.585ct loose stone Sale price¥12,800

Brazilian Pink Tourmaline 0.862ct Loose Stone Sale price¥15,800

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.