May birthstone
The birthstone for May is emerald / jade .
Emerald is a type of beryl, the same mineral as aquamarine, and is the name given to beryl, which contains chromium and has a green color. One of the characteristics is that many of them have scratches and inclusions inside. The most famous and high-quality production area is Colombia. The emerald cut is said to have originated from Colombian emeralds.
Jade is also a gemstone with an impressive green color, but it actually comes in a wide variety of colors, including purple, orange, and white. It is also famous for being mined in Japan, mainly in Niigata and Toyama prefectures, and has been selected as Japan's national stone. Highly transparent green jade called ``Roukan'' is the most valuable.
Karatz GemMagazine
" List of May birthstones and birthstones "
![[Published 12563989] Colombian Non-Oil Emerald 0.034ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7313813_c6213cfc-19f3-42d7-be51-5508ac2480f1.jpg?v=1786658898&width=2074)
[Published 12563989] Colombian Non-Oil Emerald 0.034ct Loose Stone
Sale price¥65,800
![[Published on 12563914] Loose Colombian Pyrite and Mica in Emerald, 0.614 ct](http://store.karatz.jp/cdn/shop/files/P7290563.jpg?v=1785318584&width=4000)
![[Lottery Sale 0812_02] Pt900 Colombian Mint Color Emerald 4mm/0.22ct and Diamond 0.16ct Pendant Top (Necklace Top) with Identification Report](http://store.karatz.jp/cdn/shop/files/P8060642.jpg?v=1786081594&width=4000)
![[On sale 8/15 at 10 PM JST] Colombian Emerald Gacha featuring Shimizu Kisaki's 8mm Clover In-cut (regularly 79,800 JPY) - only 15 stones available! (Bonus green beryl included) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/81.png?v=1785982219&width=1890)
[Lottery Sale 0629_08] Colombian Non-Oil Emerald 4.1mm/0.240ct Loose GIA
Sale price¥458,000
![[Posted as 12563940] Colombian Trapiche Emerald 0.199 ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7290138_91dc96c6-d22e-457a-9aca-de76d5a97d39.jpg?v=1786658658&width=2582)
[Posted as 12563940] Colombian Trapiche Emerald 0.199 ct Loose Stone
Sale price¥29,800
![[Sale 6/] 10:00 PM - Limited 11 Stones - Sri Lankan Pink Sapphire (Emerald Cut) Average 0.73ct (Multiple Purchase Discount Available)](http://store.karatz.jp/cdn/shop/files/P1010204_800476e9-3987-42e0-833b-3b54f7c615fd.jpg?v=1782733799&width=4000)
Colombian mint color emerald 0.297ct loose stone
Sale price¥8,800
[On sale June 19, 10 PM] Colombian Trapiche Emerald 0.183ct Loose Stone
Sale price¥39,800
0.210ct Colombian Non-Oil Emerald Loose Stone GIA
Sale price¥228,000
Colombian Trapiche emerald 0.418ct rough stone
Sale price¥39,800
Colombian emerald 0.145ct loose stone with precious stone
Sale price¥29,800
Colombian emerald 0.512ct loose stone (silky type)
Sale price¥12,800
Colombian Trapiche emerald 0.611ct rough stone
Sale price¥59,800
Non-Oil Emerald 1.370ct Loose GIA
Sale price¥1,580,000
Colombian oil-free emerald 0.310ct loose stone
Sale price¥298,000
![[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
Colombian mint color emerald 0.136ct loose stone
Sale price¥6,980
Colombian mint color emerald 0.155ct loose stone
Sale price¥7,980
Colombian Trapiche Emerald 0.422ct Loose
Sale price¥18,800
Colombian emerald 0.499ct rough stone
Sale price¥14,800
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.