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 "

Colombian emerald 3.1mm/0.093ct loose stone Sale price¥22,800

Benitoite 0.091ct loose (emerald cut) Sale price¥25,800

American Benitoite 0.123ct Loose Stone (Emerald Cut) Sale price¥39,800

American Benitoite 0.107ct Loose Stone (Emerald Cut) Sale price¥35,800

American Benitoite 0.104ct Loose Stone (Emerald Cut) Sale price¥29,800

Bicolor Benitoite 0.130ct loose (emerald cut) Sale price¥65,800

Colombian emerald 0.105ct loose Sale price¥31,800

Colombian emerald 0.091ct loose stone Sale price¥15,800

Colombian Emerald 3.3mm/0.131ct Loose Sale price¥25,800

Colombian emerald rough stone 7.924ct Sale price¥9,800

Colombian pyrite in emerald 4.592ct loose Sale price¥110,000

Colombian trapiche emerald (reverse trapiche) 0.144ct loose Sale price¥15,800

Colombian trapiche emerald (reverse trapiche) 0.196ct loose Sale price¥15,800

Colombian trapiche emerald (reverse trapiche) 0.170ct loose Sale price¥12,800

Colombian trapiche emerald (reverse trapiche) 0.093ct loose Sale price¥7,980

Brazilian mint-colored emerald 0.491ct loose stone Sale price¥15,800

0.176ct Colombian Emerald Loose Stone Sale price¥59,800

Brazilian emerald 3.3mm/0.119ct loose Sale price¥22,800

Colombian pyrite in emerald 7.836ct loose Sale price¥398,000

Brazilian Alexandrite 0.097ct Loose Stone (Emerald Cut) Sale price¥38,800

Colombian Emerald 0.222ct Loose Sale price¥59,800

Colombian emerald 0.101ct loose stone Sale price¥15,800

Limited to 8 stones: 1 loose kite cut stone (illusion sunstone, sapphire, emerald, spessartine garnet, etc.) Multiple purchase discounts available Sale price¥5,980

Single loose Russian oil-free emerald (1.6-1.7mm, princess cut) {Multiple purchase discounts available} Sale price¥9,800

Colombian mint-colored emerald 0.214ct loose stone Sale price¥8,800

Zambian emerald 0.159ct loose stone Sale price¥8,800

Zambian emerald 0.135ct loose stone Sale price¥8,800

Brazilian mint-colored emerald 0.945ct loose stone Sale price¥25,800

Colombian mint-colored emerald, 4.3mm/0.306ct loose stone Sale price¥8,800

[12560252] Zambian emerald 0.138ct loose stone Sale price¥8,800

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

American Benitoite 0.100ct Loose Stone (Emerald Cut) Sale price¥32,800

Colombian emerald 0.202ct loose stone Sale price¥59,800

[Limited to 6 stones] Contains 2 stones in total: 1 gemstone (rough stone) that is actually featured in a gemstone encyclopedia + 1 emerald rough stone. Sale price¥4,980

Colombian emerald 0.203ct loose stone with certificate Sale price¥98,000

Colombian mica in emerald 1.940ct loose Sale price¥49,800

Brazilian Alexandrite 0.054ct Loose (Emerald Cut) Sale price¥18,800

[12558729] Brazilian Alexandrite 0.079ct loose stone Sale price¥31,800

Brazilian Alexandrite 0.071ct Loose (Emerald Cut) Sale price¥29,800

Colombian pyrite emerald 27.414ct loose stone Sale price¥298,000

Colombian Trapiche Emerald 1.343ct Loose Sale price¥69,800

Colombian Trapiche Emerald 0.811ct Loose Sale price¥59,800

Colombian emerald 0.126ct loose stone Sale price¥15,800

Zambian emerald 0.181ct loose stone Sale price¥8,800

Zambian emerald 0.099ct loose stone Sale price¥9,800

Zambian Emerald 3.7mm/0.215ct Loose (Silky Emerald) Sale price¥9,800

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.