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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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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 0.590ct loose Sale price¥5,980

Sphene 0.320ct loose Sale price¥5,980

Ruby 0.213ct loose Sale price¥8,800

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

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

Sphene 4.350ct loose Sale price¥39,800

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 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 8 stones: 1 loose sphene stone from Madagascar (3mm, princess cut) Multiple purchase discounts available
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 7 stones: 1 loose sphene stone from Madagascar (2mm, princess cut) Multiple purchase discounts available
Sold out Pakistani sphene loose stone (multiple purchase discounts available)
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)
Sold out [On sale from 10pm on 4/27] {Limited to 6 stones} 1 loose sphene stone from Madagascar (round cut, 4mm) {Multiple purchase discounts available}
Sold out 1 sphene from Madagascar (rainbow fracture, average 1.45ct) {Multiple purchase discount available}
Sold out 【12529747掲載】スフェーン 0.570ctルース
Sold out スタールビー 0.374ctルース
Sold out ルビー 0.396ctルース
Sold out ビルマ産ルビー 0.220ルース
Sold out Limited to 1 set: Pair of two Myanmar rubies, Sanjay cut
Sold out マダガスカル産スフェーン 0.485ctルース
Sold out K18マダガスカル産スフェーン0.57ct・ベニトアイト0.061ctリング
Sold out Mozambique Ruby 0.162ct Loose
Sold out ミャンマー産トラピッチェルビー 0.152ctルース
Sold out ルビー 0.226ctルース
Sold out パキスタン産バナジウムスフェーン 1.190ctルース
Sold out ミャンマー産トラピッチェルビー 0.288ctルース
Sold out ミャンマー産トラピッチェルビー 0.129ctルース
Sold out ルビー 0.266ctルース
Sold out Chrome Sphene 0.253ct loose
Sold out ルビー 0.730ctルース

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.