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Sold out Colombian trapiche emerald (reverse trapiche) 3.0mm/0.107ct rough stone (faceted cut)
Sold out Pink diamond 2.2mm/0.043ct loose (FANCY LIGHT PURPLISH PINK, SI2)
Sold out Bekily Blue Garnet from Madagascar (color change garnet) 0.163ct loose
Sold out ベトナム産非加熱シルキーピンクサファイア 0.175ctルース
Sold out Diamond 0.777ct loose (butterfly cut)
Sold out Limited to 9 stones! Includes Koshu Kiriko plus three citrine gacha, normally priced at 29,800 yen. Discounts available for multiple purchases.
Sold out 【12561989掲載】アメリカ産オレゴンサンストーン 0.793ctルース
Sold out 【12561988掲載】アメリカ産オレゴンサンストーン 1.169ctルース
Sold out 【12561986掲載】アメリカ産オレゴンサンストーン 1.273ctルース
Sold out 【12561985掲載】アメリカ産オレゴンサンストーン 1.290ctルース
Sold out 【12561983掲載】アメリカ産オレゴンサンストーン 1.325ctルース
Sold out 【12561982掲載】アメリカ産オレゴンサンストーン 1.362ctルース
Sold out 【12561980掲載】アメリカ産オレゴンサンストーン 2.418ctルース
Sold out 【12561979掲載】ブラジル産デュモルチェライトインクォーツ 1.220ctルース
Sold out 【12561977掲載】ブラジル産デュモルチェライトインクォーツ 1.383ctルース
Sold out 【12561976掲載】ブラジル産デュモルチェライトインクォーツ 1.392ctルース
Sold out 【12561975掲載】ブラジル産デュモルチェライトインクォーツ 1.559ctルース
Sold out 【12561973掲載】ブラジル産デュモルチェライトインクォーツ 2.446ctルース
Sold out 【12561972掲載】ブラジル産デュモルチェライトインクォーツ 2.450ctルース
Sold out 【12561971掲載】ブラジル産デュモルチェライトインクォーツ 3.253ctルース
Sold out ブラジル産デュモルチェライトインクォーツ 0.673ctルース
Sold out ブラジル産デュモルチェライトインクォーツ 0.876ctルース
Sold out K18/Pt950 Brazilian Paraiba Tourmaline and Diamond Pendant Top (Necklace Top)
Sold out Blue Stone Gacha💎 (Brazilian Paraiba Tourmaline, Mozambique Paraiba Tourmaline, German Auchenite, Benitoite) {Multiple Purchase Discounts Available}
Sold out [Takeshi Yamamoto] Brazilian Dendritic Quartz 25.875ct Loose
Sold out Rough diamond (sawable) 0.466ct rough diamond (with trigon)
Sold out 0.245ct rough diamond (with trigon)
Sold out Mozambique Ruby 0.481ct Loose Stone with Certificate of Authenticity
Sold out Tanzanian Violet Sapphire 0.920ct Loose
Sold out Myanmar Color Change Zircon 5.3mm/1.043ct Loose Stone
Sold out Tanzanian Kornerupine 0.103ct Loose Stone
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.674ct Loose Stone
Sold out Afghanistan Blue Tourmaline 4.0mm/0.268ct Loose Stone (Lagoon Tourmaline)
Sold out スリランカ産スターサファイア 5.225ctルース
Sold out スリランカ産スターサファイア 3.928ctルース
Sold out Unheated Burmese Ruby 0.227ct Loose Stone, Nikko Kan
Sold out Cornflower Blue Sapphire 4.5mm/0.430ct Loose Stone AIGS
Sold out 【12560374掲載】ブルートパーズキャッツアイ 22.761ctルース
Sold out Tanzanian Dragon Garnet 1.181ct Loose Stone
Sold out Tanzanian Dragon Garnet 1.042ct Loose Stone
Sold out 《Limited 7 Stones》Sri Lankan Green Zircon (Special Cut, including Silky Type)《Multi-purchase Discount Available》
Sold out Grandidierite from Madagascar 0.167ct loose stone
Sold out Grandidierite from Madagascar 0.169ct loose stone
Sold out Indian Parrot Chrysoberyl Cat's Eye 1.225ct Loose
Sold out Zimbabwean Euclase 2.2mm/0.065ct Loose Stone
Sold out 0.848ct Loose Brazilian Medusa Quartz (Paraiba Quartz)
Sold out 1.175ct loose Australian white opal
Sold out Unheated star ruby ​​from Myanmar, 0.617ct loose

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.