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7月誕生石

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 0.258ct loose Sale price¥18,800

Burmese Ruby 0.239ct Loose Sale price¥9,800

Ruby 0.273ct loose stone Sale price¥13,800

Sphene 0.503ct loose stone Sale price¥8,800

Ruby 0.242ct loose stone Sale price¥14,800

Ruby 0.282ct loose Sale price¥8,800

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 Ruby Lottery: Win a 0.59ct Pigeon Blood Ruby with AIGS or a Burmese Star Ruby (Multiple Purchase Discounts Available)
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 グリーンランド産ルビー 1石(ラウンドカット,2mm)
Sold out [On sale November 2nd at 10pm] Bicolor Gacha: Win Zimbabwean Bicolor Euclase, 1.95ct Bicolor Sphene, and More! 💎 {Multiple purchase discounts available}
Sold out Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) {Multiple Purchase Discounts Available}
Sold out スフェーン 色違い2石 - KARATZ STORE|カラッツSTORE
Sold out Greenland Ruby Loose (approx. 2.3mm, Top Color, Certificate Included) (Multiple Purchase Discounts Available)
coming soon マダガスカル産スフェーン 0.935ctルース
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)
Sold out Limited to 6 stones: 1 loose sphene stone from Madagascar (round cut, 4mm) Multiple purchase discounts available
Sold out ミャンマー産トラピッチェルビー 0.152ct原石
Sold out ミャンマー産トラピッチェルビー 0.261ct原石
Sold out ピジョンブラッドルビー 3.7mm/0.230ctルース AIGS

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.