Skip to content

Less than 0.5 ct

Sort by

Sold out モンタナサファイア 0.443ctルース
Sold out Pink diamond 0.030ct loose (FANCY PURPLE PINK, SI2)
Sold out Pink diamond 0.070ct loose (FANCY INTENSE PURPLE PINK, I1)
Sold out American Neptunite 0.207ct Loose Stone with Certificate of Authenticity
Sold out 【12562061掲載】アメリカ産ネプチュナイト 0.256ctルース
Sold out American Neptunite 0.290ct Loose Stone with Certificate of Authenticity
coming soon Canadian Eudialite 2.5mm/0.051ct Loose Stone with Certificate of Authenticity
Sold out Canadian Eudialyte 2.5mm/0.047ct Loose Stone with Certification
Sold out Canada Eudialyte 2.5mm/0.059ct Loose Stone with Certificate of Authenticity
Sold out 【12562049掲載】オーストラリア産レインボーラティスサンストーン 0.373ctルース
Sold out 【12562017掲載】ブラジル産ヘルデライト 0.421ctルース
Sold out 【12558711掲載】ドゥニライト 0.132ctルース
Sold out バイカラーベニトアイト 0.282ctルース
Sold out 0.085ct loose, non-oil red beryl from the United States, GIA
Sold out Montana sapphire 0.359ct loose (blue sapphire)
Sold out Montana Sapphire 0.449ct loose (bicolor sapphire)
Sold out Indian alexandrite cat's eye 0.422ct loose
Sold out アフガニスタン産ハックマナイト 0.111ctルース
Sold out 【12548254掲載】パパラチアサファイア 0.474ctルース
Sold out Colombian trapiche emerald (reverse trapiche) 3.0mm/0.107ct rough stone (faceted cut)
coming soon Pink diamond 2.2mm/0.041ct loose (FANCY LIGHT PURPLE PINK, SI2)
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 Brazilian Dumortierite in Quartz 0.463ct Loose Stone (Faceted Cut)
Sold out 【12561951掲載】アメリカ産アントヒルガーネット 0.370ctルース
Sold out 【12561896掲載】ロンドンブルートパーズ 0.476ctルース
Sold out Madagascar Grandidierite 0.109ct loose stone
Sold out マダガスカル産グランディディエライト 0.108ctルース
Sold out Kenyan Tsavorite 0.164ct Loose Stone
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.354ct Loose Stone
Sold out Synthetic rutile 3.9mm/0.329ct loose stone
Sold out Brazilian Rainbow Scapolite 0.435ct Loose Stone
Sold out Brazilian Rainbow Scapolite 0.328ct Loose Stone
Sold out 【12561168掲載】メキシコ産ウォーターオパール(ファセットカット) 0.349ctルース
Sold out 【12561129掲載】スリランカ産イエローサファイア 0.291ctルース
Sold out ピンクサファリン 0.178ctルース
Sold out パキスタン産ヴィータニエミアイト 0.184ctルース
Sold out 【12561913掲載】オーストラリア産ブラックオパール 0.221ctルース
Sold out German Auyinite 3.5mm/0.131ct Loose Stone
Sold out Brazilian Alexandrite 3.0mm/0.121ct Loose
Sold out Lazulite (0.077ct) from Pakistan, loose
Sold out German Hauyne 2.2mm/0.035ct Loose Stone
Sold out 【12561305掲載】アメリカ産オレゴンサンストーン 0.472ctルース
Sold out Sri Lankan green zircon 0.494ct loose stone
Sold out Myanmar Red Spinel 0.196ct Loose Stone
Sold out Tanzanite from Tanzania 0.331ct loose stone
Sold out Myanmar color change zircon 0.439ct loose stone

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.