Internally Flawless Diamond 4.3mm/0.300ct Loose (F, IF, 3Excellent) GIA
Sale price¥98,000
Burmese ruby 3.72ct loose GIA/CGL
Sale price¥298,000
[12551250] Brazilian oil-free emerald 0.120ct loose stone
Sale price¥110,000
Unheated Bicolor Paraiba Tourmaline 0.092ct Loose GIA
Sale price¥188,000
Colombian oil-free emerald 0.220ct loose GIA
Sale price¥248,000
Colombian oil-free emerald 0.510ct loose GIA
Sale price¥598,000
Brazilian unheated particolor Paraiba tourmaline 0.84ct loose GIA
Sale price¥2,580,000
Paraiba tourmaline from Brazil 0.34ct loose GIA
Sale price¥79,800
Russian oil-free emerald 0.570ct loose stone GIA
Sale price¥298,000
Afghanistan Oil-Free Emerald 0.100ct Loose GIA
Sale price¥98,000
0.060ct loose, oil-free emerald from Madagascar, GIA
Sale price¥69,800
K18PG Brazilian Paraiba Tourmaline 0.286ct Grandidierite Ring GIA
Sale price¥198,000
[Option] GIA certificate issuance fee
Sale price¥15,000

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.

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.





















![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-2411.43.20.png?v=1792809832&width=1245)

























![(In Stock) Lottery Sale 4 [For Winners Only] [Published on 12559711] Colombian Oil-Free Emerald 0.050ct Loose Stone (NONE) GIA](http://store.karatz.jp/cdn/shop/files/P7111564.png?v=1786234201&width=2895)


