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《Limited to 6 stones》 1 stone loose green quartz from Brazil (8mm, concave cut) 《Discount available for multiple purchases》 Sale price¥3,980

[Limited to 9 stones] Brazilian green quartz 1 stone loose (10mm) [Multiple purchase discount available] Sale price¥3,980

Limited to 6 stones: Aquamarine + Iolite loose stone set of 2 (March birthstone) Multiple purchase discounts available Sale price¥2,980

[Option] Milling Sale price¥5,000

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

Additional charge: K18PG (base metal) + 10,000 yen Sale price¥27,000

Additional charge: K18YG (base metal) + 10,000 yen Sale price¥37,000

YAG (Yttrium Aluminum Garnet) 3.9mm/0.317ct loose stone Sale price¥6,980

Limited to 7 stones: 1 loose stone of spinel (blue/purple) from Madagascar. Discounts available for multiple purchases. Sale price¥3,980

Limited to 8 stones: Swiss blue topaz (4mm, rose cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥3,980

November birthstone citrine rough and loose stone set of 2 (Madeira citrine, from Brazil) {Multiple purchase discounts available} {For beginners} Sale price¥3,980

Limited to 12 stones Tanzanian Milky Opal Cat's Eye (7.5 x 5.5 mm) Multiple purchase discounts available Sale price¥3,980

Limited to 7 stones: 1 loose Australian boulder opal (average 25 carats) Multiple purchase discounts available Sale price¥8,800

Additional charge for resizing: 1,500 yen Sale price¥2,500

[Limited to 10 stones] Inca Rose from Argentina (Rhodochrosite, average 1.5ct) [Multiple purchase discount available] Sale price¥5,980

Tanzanite rough and loose stone set of 2 (average 3ct, cushion cut) from Tanzania {Multiple purchase discounts available} Sale price¥6,980

Limited to 6 stones: 1 loose Madagascar needle-in topaz (average 2.1 carats) Multiple purchase discounts available Sale price¥4,980

Limited to 5 stones Leopard print cat cut KARATZ collaboration (Amber, 8.5mm) Multiple purchase discounts available Sale price¥12,800

Madeleine "Semi-custom ring setting" Sale price¥89,800

13-stone diamond half eternity ring set (VS class, D-G color, H&C, 2.0mm) Sale price¥158,000

Limited to 4 stones: 1 loose silky sapphire from Sri Lanka. Discounts available for multiple purchases. Sale price¥3,980

[Option] Fee for obtaining a certificate of origin from the Japan-Germany Gem Laboratory Sale price¥2,500

Central Gem Research Institute Non-heated Issuance fee for certificate of authenticity (optional) Sale price¥10,000

Limited to 9 stones: 1 Brazilian green beryl loose stone. Discounts available for multiple purchases. Sale price¥3,580

Madeira Citrine from Brazil (6mm, round cut, November birthstone) {Multiple purchase discounts available} Sale price¥4,980

Pakistani Axinite 0.500ct loose stone (green tint) Sale price¥12,800

[Sales End on Monday, June 30th] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Bungo Ring [Dazai Osamu Model] Sale priceFrom ¥25,800

Limited to 27 stones: Peridot (Trilliant Cut) 1 stone (5.0-5.5mm) Multiple purchase discounts available Sale price¥6,980

Limited to 9 stones: Tanzanite loose stone from Tanzania (5x7mm, oval cut) Multiple purchase discounts available Sale price¥12,800

Additional charge: K18WG (base metal) + 10,000 yen Sale price¥30,000

Limited to 9 stones: 1 rough petalite stone from Myanmar (average 6.0 carats) Multiple purchase discounts available Sale price¥2,980

Strontium titanate 5mm/0.688ct loose stone Sale price¥12,800

Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity Sale price¥39,800

Synthetic Rutile 0.554ct Loose Sale price¥8,800

[Shipping and public settings notice] Bracelet processing fee for Mochizuki template [For Mr.] Sale price¥1,000

[Option] Milling Sale price¥30,000

《Limited 2 Sets - New Tucson Arrival》 6-Stone Benitoite Gradient Set (2.25mm, including Top Quality) with Orange Benitoite (Peach Benito)《Multiple Purchase Discount Available》 Sale price¥98,000

《New Tucson Arrivals - Limited to 13 Stones》Mexican Opal, including B-grade stones (Egg-in-Opal and Water Opal) 《Multiple Purchase Discount Available》 Sale price¥2,980

[Option] Laser engraving of characters and symbols Sale price¥5,000

《Limited to 11 stones》Koshu Kiseki Kiriko plusthree Peridot (including lilypad) & Monsieur Saint-Jude cut peridot gacha《Multiple purchase discount available》 Sale price¥4,980

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

《Limited to 5 stones》Fluorescent brown diamond single loose stone (pear shape, SI clarity equivalent, 0.2ct UP) 《Bulk purchase discount available》 Sale price¥4,980

Maushitsit (Mawsissi) from Myanmar 1 stone loose (12mm)《Multiple purchase discount available》 Sale price¥3,980

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.