July birthstone

July's birthstone is Ruby Sphene .

Ruby can be said to be the representative of red gemstones. It is a gem that has been loved all over the world since ancient times. In fact, it belongs to the same mineral corundum as the striking blue sapphire. Corundum is said to be the second hardest material after diamond, and due to its durable properties, it can be enjoyed as everyday jewelry. The stronger the red and the more vivid the color, the more valuable it is, and the highest quality is called "pigeon blood."

Sphene is a gemstone that is also known for emitting dispersed light (fire) that is stronger than diamond. One of its characteristics is that it is highly pleochroic, showing different hues depending on the viewing angle. Depending on the angle of light, fire and pleochroism can appear at the same time, giving it an enchanting beauty that captivates the viewer.

Karatz GemMagazine
" List of July birthstones and birthstones "

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Sphene from Madagascar 3.6mm/0.216ct loose

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Sphene from Madagascar 0.864ct loose

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Sphene from Pakistan 0.470ct loose

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Ruby from Greenland 0.319ct loose with certificate

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Ruby from Greenland 0.258ct loose

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Ruby from Greenland 0.399ct loose with certificate

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[KEN] Sphene 1.505ct loose

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Ruby from Greenland 0.672ct loose with certificate

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Ruby from Greenland 4mm/0.409ct loose with certificate

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Ice ruby from Greenland (pink sapphire) 0.479ct loose with certificate

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Ruby 0.797ct Ruth Japanese-German book

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Sphene 4.3mm/0.621ct loose

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Ruby from Greenland 1.533ct loose with certificate

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Ruby from Greenland 0.258ct loose with certificate

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Ruby from Greenland 0.312ct loose with certificate

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Ruby from Greenland 4.2mm/0.414ct loose with certificate

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Ruby from Greenland 4.2mm/0.359ct loose with certificate

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Ice ruby from Greenland 0.416ct loose with certificate

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Ice ruby from Greenland 0.341ct loose with certificate

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Ice ruby from Greenland 0.340ct loose with certificate

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Ruby from Greenland 2.3mm/0.059ct loose with certificate

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Ice ruby from Greenland 3.1mm/0.130ct loose with certificate

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Ruby 0.166ct loose

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Ruby 0.168ct loose

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Ruby 3.0mm/0.144ct loose

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Ruby 0.144ct loose

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Ruby 3mm/0.167ct loose

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Ruby 0.185ct loose

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Sphene 0.150ct loose

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Sphene 0.160ct loose

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Sphene 2 stone set 0.362ct loose

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Ruby in hook sight 9.870ct loose with patch

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Ruby in hook site 16.787ct loose with emblem

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Ruby from Greenland 0.340ct loose with certificate

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Ruby and ice ruby from Greenland 2 stone set 0.92ct loose with certificate

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Sphene 0.29ct loose

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Sphene 6.188ct loose

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Ruby and ice ruby from Greenland 2 stone set 0.82ct loose with certificate

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Ruby from Greenland 0.429ct loose with certificate

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Ruby from Greenland 0.365ct loose with certificate

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Ruby from Greenland 0.337ct Ruth certificate included

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Ruby from Greenland 0.348ct Ruth certificate included

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Ruby from Greenland 0.311ct with certificate

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Ruby and ice ruby from Greenland 2 stone set 0.84ct loose with certificate

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Greenland Ruby/Ice Ruby 2 stone set 0.85ct loose with certificate

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Ruby from Greenland 0.310ct loose with certificate

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Ruby from Greenland 0.704ct loose with certificate

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Ruby from Greenland 0.655ct loose with certificate

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments