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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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Ruby 0.472ct loose Sale price¥6,980

Sphene 1.100ct loose Sale price¥15,800

Sphene 0.940ct loose Sale price¥14,800

Sphene 0.890ct loose Sale price¥12,800

Sphene 0.850ct loose Sale price¥15,800

Sphene 0.680ct loose Sale price¥8,800

Sphene 0.570ct loose Sale price¥9,800

Sphene 0.320ct loose Sale price¥5,980

Sphane 4.3mm/0.275ct loose Sale price¥7,980

Sphene 4.3mm/0.360ct loose Sale price¥8,800

Sphene 10.390ct loose Sale price¥128,000

Sphene 0.570ct loose Sale price¥5,980

Bicolor Sphene 4.50ct loose Sale price¥258,000

Sphene 4.208ct loose Sale price¥79,800

Sphene 1.690ct loose Sale price¥12,800

Sphene 1.607ct loose Sale price¥12,800

Pt950 Sphene 0.21ct ring Sale price¥98,000

Sphene 0.540ct loose Sale price¥12,800

Sphene 1.751ct loose Sale price¥21,800

Sphene 1.210ct loose Sale price¥14,800

Sold out 含浸ルビー・天然ルビー見分け2点セット - KARATZ STORE|カラッツSTORE
Sold out スフェーン 1石(2.5mm,KEN氏カット)
Sold out グリーンランド産アイスルビー 1石(ハートシェイプ,4mm,ピンクサファイア)《複数購入割引有》
Sold out  パキスタン産カラーチェンジスフェーン1石ルース《複数購入割引有》
Sold out グリーンランド産ルビー 1石(ラウンドカット,2mm)
Sold out [Limited to 14 stones] 1 stone Sphene from Madagascar (3.5mm) [Discount available for multiple purchases]
Sold out スフェーン 色違い2石 - KARATZ STORE|カラッツSTORE
Sold out 《Limited to 5 stones》1 stone Sphene from Madagascar《Multiple purchase discount available》(Mr. Sanjay cut)
Sold out グリーンランド産アイスルビー 1石(ハートシェイプ,4mm)

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.