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Sold out シェルオパール（貝オパール） 74.153ct原石

Australian Shell Opal (Shell Opal) 74.153ct Rough Stone
Sold out Ukrainian bicolor topaz 5.622ct loose stone

Ukrainian bicolor topaz 5.622ct loose stone
Sold out Montana sapphire 9 stone half eternity ring set (3.0mm)

Montana sapphire 9 stone half eternity ring set (3.0mm)
Sold out Montana sapphire 10 stone half eternity ring set (approx. 2.6mm)

Montana sapphire 10 stone half eternity ring set (approx. 2.6mm)

Limited Quantity: 2mm Benitoite (Top Quality Ice Blue) (Multiple Purchase Discounts Available)

Limited Quantity: 2mm Benitoite (Top Quality Ice Blue) (Multiple Purchase Discounts Available) Sale price¥8,800
Sold out Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available}

Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available}
Sold out コロンビア産エメラルド 0.111ctルース

Colombian emerald 0.111ct loose stone with precious stone
Sold out ベニトアイト 2.0mm/0.050ctルース（カボションカット）

Benitoite 2.0mm/0.050ct loose stone (cabochon cut)
Sold out ピンクダイアスポア 0.351ctルース

Pink diaspore 0.351ct loose stone
Sold out ルビー 0.110ctルース

Ruby 0.110ct loose
Sold out ピンクアメジスト 3.275ctルース

Pink amethyst 3.275ct loose stone
Sold out スリランカ産マグネタイト 5.083ctルース

Sri Lankan magnetite 5.083ct loose stone

Sold out スリランカ産パープルスピネル 1.638ctルース

Sri Lankan Purple Spinel 1.638ct Loose Stone, Japan-Germany Exchange
Sold out スリランカ産パープルツインスターサファイア 1.163ctルース

Sri Lankan Twin Star Sapphire 1.163ct Loose

Sold out パープルサファイア 0.364ctルース

Purple sapphire 0.364ct loose stone
Sold out ピンクサファイア 0.202ctルース

Pink sapphire 0.202ct loose stone
Sold out ピンクサファイア 0.199ctルース

Purple sapphire 0.199ct loose stone
Sold out ピンクサファイア 0.377ctルース

Mozambique Pink Sapphire 0.377ct Loose (Hot Pink Sapphire)
Sold out マダガスカル産スフェーン 1.380ctルース

Madagascar sphene 1.380ct loose stone
Sold out ホワイトコンクパール（火焔模様有り） 0.627ctルース

White Conch Pearl (with flame pattern) 0.627ct loose stone with jewel
Sold out クロムトルマリン 0.546ctルース

Tanzanian Chrome Tourmaline 0.546ct Loose Stone

Sold out Brazilian Andalusite 2.013ct loose stone

Brazilian Andalusite 2.013ct loose stone
Sold out Brazilian Alexandrite 0.066ct loose stone

Brazilian Alexandrite 0.066ct loose stone
Sold out [Koshu Precious Stones Plusthree] Tibetan Andesine 7.873ct [Collaboration] Loose Stone (Color Change Andesine)

[Koshu Precious Stones Plusthree] Tibetan Andesine 7.873ct [Collaboration] Loose Stone (Color Change Andesine)
Sold out コロンビア産パイライト・雲母インエメラルド 0.815ctルース

Colombian pyrite-mica emerald 0.815ct loose stone
Sold out コロンビア産トラピッチェエメラルド 0.424ct原石

Colombian Trapiche emerald 0.424ct rough stone
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)

Benitoite 1.8mm/0.025ct loose stone (colorless benitoite) Sale price¥12,800
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)

Benitoite 1.8mm/0.025ct loose stone (colorless benitoite) Sale price¥15,800
Sold out Benitoite 1.8mm/0.028ct loose stone (colorless benitoite)

Benitoite 1.8mm/0.028ct loose stone (colorless benitoite)
Sold out Madagascar Bekiri Blue Garnet (Color Change Garnet) 4.5mm/0.369ct Loose Stone

Madagascar Bekiri Blue Garnet (Color Change Garnet) 4.5mm/0.369ct Loose Stone
Sold out Pakistani Oil in Quartz 1.337ct Loose Stone (Moving Bubbles)

Pakistani Oil in Quartz 1.337ct Loose Stone (Moving Bubbles)
Sold out ブラジル産アクアマリン 0.874ctルース

Brazilian Aquamarine 0.874ct Loose Stone (Phantom Cut)
Sold out Limited to 17 stones: 1 loose Afghanite stone from Afghanistan. Discounts available for multiple purchases.

Limited to 17 stones: 1 loose Afghanite stone from Afghanistan. Discounts available for multiple purchases.
Diamond (Old Mine Cut) 1 Loose Stone {Multiple Purchase Discounts Available}

Diamond (Old Mine Cut) 1 Loose Stone {Multiple Purchase Discounts Available} Sale price¥4,980
Sold out Limited to 10 stones: Madagascar Andesine Labradorite (Pink Schiller) 1 loose stone (Multiple purchase discounts available)

Limited to 10 stones: Madagascar Andesine Labradorite (Pink Schiller) 1 loose stone (Multiple purchase discounts available)
Brazilian rutilated quartz (rutile/rutile quartz (rutilated quartz)) 1 loose stone (6.0-6.5mm, for beginners) {Multiple purchase discounts available}

Brazilian rutilated quartz (rutile/rutile quartz (rutilated quartz)) 1 loose stone (6.0-6.5mm, for beginners) {Multiple purchase discounts available} Sale price¥2,580
Sold out Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available}

Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available}
{2 stones remaining} 1 Labradorite loose stone (20 x 15 mm, for beginners) {Multiple purchase discounts available}

{2 stones remaining} 1 Labradorite loose stone (20 x 15 mm, for beginners) {Multiple purchase discounts available} Sale price¥3,980
Sold out ベニトアイト 0.154ctルース

Benitoite 0.154ct loose

Additional charge for resizing: 25,000 yen Sale price¥25,000

Additional charge for resizing: 16,000 yen Sale price¥16,000

Additional charge for resizing: 8,000 yen Sale price¥8,000

Bezel setting (Fukurin) + 5,000 yen Sale price¥5,000

Additional charge: K18PG (base metal) + 20,000 yen Sale price¥20,000

Additional charge: K18WG (base metal) + 25,000 yen Sale price¥25,000

Additional charge: K18YG (base metal) + 20,000 yen Sale price¥20,000

Additional charge: K18PG (base metal) + 15,000 yen Sale price¥15,000

Additional charge: K18YG (base metal) + 15,000 yen Sale price¥15,000

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.