![[Sales start 10:00 PM on May 4th] Colombian non-oil emerald (NONE) 0.060ct loose GIA](http://store.karatz.jp/cdn/shop/files/PC220238_2d3f6e8d-8516-4c46-bba2-f287e5941b46.jpg?v=1777686131&width=3224)
![[On sale 5/4 at 10 PM] Colombian bicolor emerald 0.274ct loose stone](http://store.karatz.jp/cdn/shop/files/P9183956_25a7a6b1-a220-4cf8-a400-be021fcbc2aa.jpg?v=1777685820&width=4000)
[On sale 5/4 at 10 PM] Colombian bicolor emerald 0.274ct loose stone
Sale price¥98,000
![[On sale May 4th, 10 PM JST] Bicolor Benitoite from USA, 0.624 ct loose stone with鑑別書](http://store.karatz.jp/cdn/shop/files/P4146107_bde5edf5-3b59-499c-9f77-602154ca5a17.jpg?v=1777685262&width=2873)
![[On sale May 3rd at 10 PM] Afghan Kunzite (Lilac Pink) 49.724ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/12562635_003.jpg?v=1775723129&width=1200)
![[On sale May 3rd at 10 PM] Pink Diamond 0.137ct Loose (FANCY DEEP BROWNISH PINK, I-1)](http://store.karatz.jp/cdn/shop/files/32501866_02.jpg?v=1775722654&width=1200)
![[On Sale May 2 at 10 PM] Ruby 0.286ct Loose Gemstone with Identification Report](http://store.karatz.jp/cdn/shop/files/P2197889_4020ad31-fba6-4c2b-94c0-ba3f34311857.jpg?v=1774485888&width=2690)
![[May 3, 10 PM JST Release] Dendritic Agate (Dendritic Quartz) Gacha - 1 Stone Loose Piece "Tucson New Arrivals / Limited 7 Stones" (Multi-Purchase Discount Available)](http://store.karatz.jp/cdn/shop/files/collage_a21961d5-944b-44ca-b713-5888dd00b791.png?v=1777552169&width=2250)
![[On sale May 4th at 10 PM] Limited to 12 Stones - Loose Sri Lankan Star Sapphire (1 Stone) - Multiple Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/P1010018_ab780077-1e90-4498-8d90-d376bf99bd64.jpg?v=1777520184&width=4000)
Loose Brown Diamond 0.290ct (FANCY BROWN, SI-2)
Sale price¥15,800
Diamond 3.7mm/0.318ct Loose (F, SI-1, Princess Cut)
Sale price¥49,800
Colombian Trapiche Emerald 0.422ct Loose
Sale price¥18,800
Mica in Quartz 0.865ct Loose Stone
Sale price¥5,980
Mica in Quartz 0.736ct loose stone
Sale price¥5,980
Mica in Quartz 0.710ct Loose
Sale price¥5,980
Mexican Cantera Opal 17.284ct Loose
Sale price¥39,800
Spanish Sphalerite 11mm/7.286ct loose stone
Sale price¥79,800
Spanish sphalerite 6.392 ct loose stone
Sale price¥79,800
0.168ct Pakistan Vayrynenite Loose Gemstone
Sale price¥35,800
Väyrynenite from Pakistan, 0.146 ct, loose
Sale price¥39,800
[On sale 5/27 10 PM] Diamond 3.8mm/0.197ct Loose (E, VVS-1, VeryGood)
Sale price¥39,800
Diamond 0.095ct Loose Stone (F, VS-2, Excellent)
Sale price¥22,800
Flawless Diamond (H&C) 0.280ct Loose Stone (D, FL, 3Excellent H&C)
Sale price¥210,000
Flawless Diamond (H&C) 0.290ct Loose (D, FL, 3Excellent H&C)
Sale price¥218,000
Mexican Cantera Opal 7.520 ct Loose Stone with Appraisal
Sale price¥24,800
Mexican Cantera Opal 5.811 ct Loose Stone with Certificate
Sale price¥29,800
1.758 ct Ruby Loose Stone from Vietnam with Identification Report
Sale price¥49,800
Ruby 0.528ct Loose Stone with Gem Identification Report
Sale price¥28,800
[On Sale May 14th at 10 PM] Colombian Emerald 0.689ct Loose Stone
Sale price¥18,800
[Sale on 5/5 at 10 PM] Brazilian Dendritic Agate 7.063ct Loose Stone
Sale price¥3,980
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.
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.