5 major gems

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[Available at 10 PM on December 13th] Limited to 9 stones: Australian Black Opal (including semi-black opal) Loose Stone Gacha (Includes 1 bonus white opal) [Multiple purchase discounts available]

[12/12 10 PM Sale] Limited to 15 stones! Includes a rare UNEVEN Fancy color gemstone (normally ¥39,800) and a 0.428ct Fancy color gemstone (¥69,800). Get one loose yellow diamond! Discounts available for multiple purchases. Sale price¥3,980

[Available at 10 PM on December 20th] Limited to 11 Stones: Montana Sapphire (Rock Creek Mine) Gacha! 1 Loose Stone (Oval Cut, 5x3mm) [Multiple Purchase Discounts Available] Sale price¥3,980

Limited to 14 stones: Beryllium-heated sapphire (3.5mm, KEN cut) - 1 loose stone. Discounts available for multiple purchases. Sale price¥1,580

[Available at 10 PM on December 20th] Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available] Sale price¥3,980

Mint green sapphire 0.348ct loose Sale price¥9,800

Bicolor sapphire from Madagascar 0.252ct loose Sale price¥9,800

Bicolor sapphire from Madagascar 0.259ct loose Sale price¥4,980

Bicolor sapphire from Madagascar 0.198ct loose Sale price¥7,980

Bicolor sapphire from Madagascar 0.212ct loose Sale price¥7,980

Mexican water opal 0.212ct loose (contrarus opal) Sale price¥18,800

Yellow sapphire from Sri Lanka 0.222ct loose Sale price¥9,800

Unheated silky pink sapphire from Vietnam 0.197ct loose Sale price¥8,800

Unheated silky pink sapphire from Vietnam 0.247ct loose Sale price¥8,800

[12/14 22:00 Sale] Mexican Water Opal (Faceted) 0.402ct Loose (Contrarus Opal) Sale price¥12,800

[12/7 22:00 Sale] Mexican Egg-in Opal 0.381ct Loose Sale price¥18,800

[12/13 22:00 Sale] Sri Lankan Yellow Sapphire 0.343ct Loose Sale price¥12,800

[12/14 22:00] Colombian Emerald Rough 11.155ct (with Pyrite) Sale price¥22,800

[12/14 22:00] Colombian Emerald 3.0mm/0.098ct Loose Stone Sale price¥12,800

[12/12 22:00 Sale] Synthetic Opal 0.856ct Loose (Synthetic Water Opal) Sale price¥8,800

Yellow diamond rough stone (makeable) 0.247ct rough stone Sale price¥22,800

Mexican cantera opal 15.542ct loose Sale price¥15,800

Mexican cantera opal 9.422ct loose Sale price¥25,800

Mexican cantera opal 7.563ct loose Sale price¥15,800

Australian boulder opal 6.980ct loose Sale price¥6,980

[12/22 22:00] Mozambique Ruby 0.537ct Loose Sale price¥15,800

[12/22 22:00] Sri Lankan Blue Sapphire 0.645ct Loose Sale price¥25,800

[12/22 22:00] Sri Lankan Star Sapphire 12.679ct Loose Sale price¥158,000

[12/23 22:00] Sri Lankan Star Sapphire 5.066ct Loose Sale price¥69,800

[12/23 22:00] Australian Black Opal 2.736ct Loose Sale price¥98,000

[12/23 22:00] Sri Lankan Star Sapphire 3.821ct Loose Sale price¥79,800

[12/23 22:00] Mexican Fire Opal 1.283ct Loose Sale price¥29,800

[12/23 22:00] Mexican Fire Opal 1.413ct Loose Sale price¥39,800

[12/23 22:00] Australian White Opal 4.170ct Loose Sale price¥69,800

[12/21 22:00] Sri Lankan Blue Sapphire 1.008ct Loose Sale price¥69,800

[12561695] Australian White Opal 1.928ct Loose Sale price¥39,800

[12/21 22:00] Mexican Cantera Opal 9.166ct Loose Sale price¥69,800

[On Sale at 10 PM on December 21st] Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose Sale price¥12,800

Australian boulder opal 4.470ct loose Sale price¥25,800

Yellow opal 17.283ct loose Sale price¥29,800

Mexican Fire Opal 4.5mm/0.244ct Loose Sale price¥9,800

Diamond 0.052ct loose (trapeze cut, VS class equivalent) Sale price¥6,980

Colombian emerald cat's eye 0.110ct loose Sale price¥9,800

[12/9 22:00 Sale] Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho Sale price¥69,800

[12/16 22:00 Sale] Green Sapphire 0.607ct Loose Sale price¥12,800

[12/16 22:00 Sale] Sri Lankan Yellow Sapphire 0.170ct Loose Sale price¥12,800

[12/16 22:00 Sale] Sri Lankan Yellow Sapphire 0.182ct Loose Sale price¥9,800

[12/20 22:00 Sale] Colombian Emerald Rough Stone 13.577ct Sale price¥18,800

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.