2.0ct - 5.0ct

Brazilian Dendritic Agate 2.788ct Loose Stone Sale price¥6,980

Brazilian Dendritic Agate 3.575ct Loose Stone Sale price¥8,800

Brazilian rutilated quartz (rutilated quartz) 8.2mm/2.090ct loose stone Sale price¥8,800

【甲州貴石切子plusthree】メキシコ産ファイアオパール 4.633ctルース《コラボ》ワッペン

[Koshu Precious Stones plusthree] Mexican Fire Opal 4.633ct Loose Stone [Collaboration] Patch Sale price¥49,800

Australian black opal 3.242ct loose stone Sale price¥59,800

[Sale on 6/25 at 10 PM] US Scheelite 2.666ct Loose Gemstone with Certificate Sale price¥15,800

[On Sale June 23rd at 10 PM] Myanmar Black Spinel 3.061ct Loose Stone with Gemstone Identification Report Sale price¥15,800

Brazilian Green Tourmaline 2.218ct Loose Sale price¥25,800

2.055ct Bicolor Sphalerite from Spain Sale price¥39,800

[On sale June 21st, 10 PM] Mexican Fire Opal Loose Stone 2.279ct Sale price¥15,800

[On sale June 15th at 10 PM] Natural Kyanite from Nepal 2.863ct Loose (Royal Blue Color) Sale price¥15,800

[On sale June 21, 10 PM JST] Tanzania Zircon 3.643ct Loose Stone Sale price¥22,800

[On sale June 20 at 10 PM] Cambodian orange zircon 3.800ct loose stone Sale price¥45,800

[12550851] 2.944ct Mozambique pink tourmaline loose stone Sale price¥39,800

[12551148] Australian black opal 3.890ct loose stone Sale price¥69,800

Brazilian dendritic quartz 4.587ct loose stone Sale price¥9,800

Sri Lankan Star Sapphire 2.093ct Loose Sale price¥8,800

[On sale June 7, 10 PM] Untreated Blue Sapphire 2.430ct Loose Gemstone GIA Sale price¥258,000

[Sale on June 6 at 10 PM] Pyrite in Emerald from Chivor Mine, Colombia, 4.221 ct Loose Stone Sale price¥98,000

[On sale June 6th, 10 PM] Nepal Kyanite 2.906ct Loose Stone with Certificate Sale price¥19,800

[On sale June 6th, 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 4.098ct Loose Stone with Japan-Germany Gemological Report Sale price¥24,800

[On sale June 6th at 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 3.210ct Loose Stone, GIA & JGGL Certified Sale price¥19,800

[Sale on 6/6 at 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 2.556ct Loose Stone with Japan-Germany Gemstone Report Sale price¥15,800

[On sale June 6th at 10 PM] Malawi Moonstone (Malawi Moonstone) 2.428 ct Loose Sale price¥18,800

[On sale June 6, 10 PM JST] Malawi Moonstone 2.233ct Loose Stone Sale price¥15,800

[Sale on June 6 at 10 PM] Malawi Moonstone (Malawi Moonstone) 2.209 ct loose stone Sale price¥15,800

[On sale June 6th at 10 PM] Malawi Moonstone 2.201ct Loose Stone Sale price¥15,800

[On sale June 12th at 10 PM] Malawi Moonstone 2.144ct Loose Sale price¥15,800

[Sales start June 12th, 10 PM] Malawi Moonstone (Malawi Moonstone) 2.085ct Loose Gemstone Sale price¥16,800

[On sale June 13th, 10 PM JST] Malawi Moonstone 2.055ct Loose Stone Sale price¥16,800

[Sale on June 5th at 10 PM] Sri Lankan Zircon Cat's Eye 2.087ct Loose Stone with Appraisal Sale price¥39,800

【Sales start May 30th, 10 PM JST】 Malawi Moonstone 2.601ct Loose Sale price¥5,980

Amethyst 4.249ct rough stone Sale price¥4,980

Bicolor tourmaline 4.448ct loose stone Sale price¥55,800

[On sale June 2nd, 10 PM] Spanish Sphalerite 4.445ct Loose Stone Sale price¥79,800

[On sale June 5th, 10 PM] Colombian Euclase 2.365ct Loose Stone Sale price¥59,800

[Sale starts June 13th at 10 PM] Kochi Prefecture Blood Coral 2.340ct Loose Stone Sale price¥19,800

[Sale on June 13 at 10 PM] Kochi Prefecture Red Coral Loose Stone 2.294ct Sale price¥19,800

[Sales start 10 PM on June 8th] High-Grade Red Coral from Kochi Prefecture, 2.187ct Loose Stone Sale price¥19,800

Myanmar Star Spinel 2.030ct Loose Sale price¥69,800

Colombian pyrite emerald 3.817ct loose stone Sale price¥59,800

Romanesite in Quartz 4.825ct loose stone Sale price¥9,800

Brazilian Bi-Color Tourmaline 3.785ct Loose Stone [On sale May 27th, 10 PM JST] Sale price¥110,000

Brazilian Flower Quartz 4.666ct Loose Stone Sale price¥9,800

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） 3.251ctルース

Andesine Labradorite (also known as Rainbow Moonstone) 7.7mm/3.251ct Loose Stone (Sphere) Sale price¥29,800

[On sale May 24th at 10 PM] Madagascar Apatite Cat's Eye 2.800ct Loose Gemstone, Nissaiju Sale price¥29,800

[On sale May 21st at 10 PM] Brazilian Lavender Quartz (Scorolite) 2.211ct 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

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.