Round Cut

Spanish Sphalerite 5.6mm/0.841ct loose stone Sale price¥12,800

Spanish Sphalerite 12.5mm/9.860ct Loose Stone Sale price¥98,000

【さくらインカット】レピドクロサイトインクォーツ 7mm/1.007ct《コラボ》ルースワッペン

[Sakura Incut] Brazilian Lepidocrocite in Quartz 7mm/1.007ct {Collaboration} Loose Patch Sale price¥25,800

インターナリーダイヤモンド 0.25ルース(E, IF, 3Excellent) GIA

Internal Diamond 0.25 Loose (F, IF, 3Excellent) GIA Sale price¥69,800

Cassiterite 4.2mm/0.676ct Loose Stone with Certificate of Authenticity Sale price¥16,800

インターナリーフローレスダイヤモンド（H&C） 0.204ctルース(F, IF, 3Excellent H&C)

Internally Flawless Diamond (H&C) 0.204ct Loose (F, IF, 3Excellent H&C) Sale price¥59,800

Madagascar Purple Sapphire 4.5mm/0.393ct Loose Stone Sale price¥18,800

Madagascar Purple Sapphire 4.5mm/0.435ct Loose Stone Sale price¥18,800

Madagascar Golden Iolite (Cordierite) 7.6mm/1.477ct Loose Stone Sale price¥29,800

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） 0.146ctルース

Madagascar Bekiri Blue Garnet (Color Change Garnet) 3.1mm/0.146ct Loose Stone Sale price¥15,800

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） 0.141ctルース

Madagascar Bekiri Blue Garnet (Color Change Garnet) 3.1mm/0.141ct Loose Stone Sale price¥15,800

Tanzanite from Tanzania 5.8mm/0.803ct loose stone Sale price¥35,800

Russian Demantoid Garnet (Horsetail Recognized) 3.5mm/0.206ct Loose Stone Sale price¥29,800

Russian Demantoid Garnet (Horsetail certified) 2.4mm/0.063ct loose stone Sale price¥39,800

Russian Demantoid Garnet (Horsetail Recognized) 4.6mm/0.433ct Loose Stone Sale price¥79,800

Russian Demantoid Garnet (Horsetail certified) 4.6mm/0.464ct loose stone Sale price¥128,000

Brazilian Lepidocrocite in Quartz 9.0mm/2.735ct Loose Stone Sale price¥14,800

American Red Beryl 0.254ct Loose Sale price¥59,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.794ct Loose Stone Sale price¥15,800

Sri Lankan Blue Sapphire 4.6mm/0.396ct Loose Sale price¥12,800

Sri Lankan Blue Sapphire 4.2mm/0.333ct Loose Stone Sale price¥12,800

Mozambique Rhodolite Garnet 5.7mm/1.188ct Loose Stone Sale price¥12,800

Sri Lankan Blue Sapphire 4.3mm/0.371ct Loose Stone Sale price¥12,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.531ct Loose Stone Sale price¥29,800

Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.309ct Loose Stone Sale price¥12,800

【12555689掲載】ブラジル産パライバトルマリンインクォーツ 0.292ctルース

Brazilian Paraiba Tourmaline in Quartz 4.3mm/0.292ct Loose Stone Sale price¥12,800

Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.328ct Loose Stone Sale price¥12,800

Aventurine Aquamarine 7.3mm/1.310ct Loose Sale price¥14,800

Tanzanian bicolor tanzanite 5.0mm/0.585ct loose stone Sale price¥15,800

Mozambique Rhodolite Garnet 6.1mm/0.968ct Loose Stone Sale price¥12,800

American Benitoite 3.5mm/0.192ct Loose Stone (Contains Minerals) Sale price¥69,800

インターナリーフローレスダイヤモンド（H&C） 4.45mm/0.305ctルース(F, IF, 3Excellent H&C) GIA&中宝

[On sale from 10pm on 5/3] Internally Flawless Diamond (H&C) 4.45mm/0.305ct Loose (F, IF, 3Excellent H&C) GIA & Chuho Sale price¥98,000

Brazilian Green Spodumene 8.3mm/1.612ct Loose Stone Sale price¥8,800

Brazilian Green Spodumene 7.9mm/1.721ct Loose Stone Sale price¥8,800

Brazilian Spodumene 7.4mm/1.935ct Loose Stone Sale price¥9,800

Brazilian Spodumene 7.8mm/2.013ct Loose Stone Sale price¥15,800

Mexican Hyalite Opal 4.9mm/0.348ct Loose Sale price¥12,800

Mexican Hyalite Opal 6.9mm/1.134ct Loose Sale price¥25,800

Mexican Hyalite Opal 5.2mm/0.439ct Loose Stone Sale price¥12,800

Mexican Hyalite Opal 4.8mm/0.304ct Loose Stone Sale price¥9,800

Mexican Hyalite Opal 5.0mm/0.378ct Loose Stone Sale price¥11,000

Sri Lankan Green Zircon 4.6mm/0.543ct Loose Stone Sale price¥8,800

Sri Lankan Green Zircon 4.0mm/0.344ct Loose Stone Sale price¥6,980

【ダンデライオンカット】マダガスカル産アンデシン・ラブラドライトムーンストーン（通称名ブルームーンストーン） 7.0m/1.147ct《コラボ》ルース鑑別書のネット通販。宝石ルース・天然石・レアストーンを販売。カラッツSTOREは国内最大級の宝石専門情報メディアKARATZ（カラッツ）の宝石専門通販サイトです。宝石鑑定士が運営しています。

[Dandelion Cut] Madagascar Andesine Labradorite Moonstone (also known as Blue Moonstone) 7.0m/1.147ct {Collaboration} Loose Stone with Certificate of Authenticity Sale price¥59,800

Pakistani Lazurite (Azurite) 4.1mm/0.318ct Loose Stone Sale price¥59,800

Sri Lankan Zircon 5.8mm/1.255ct Loose Stone Sale price¥9,800

Russian Demantoid Garnet (Horsetail Recognized) 2.6mm/0.092ct Loose Stone Sale price¥16,800

Russian Demantoid Garnet (Horsetail certified) 2.6mm/0.091ct 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 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.