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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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Sold out Limited to 10 stones! Pigeon Blood Ruby (normally priced at 39,800 yen) Red Gemstone Gacha with AIGS Certificate (Multiple purchase discounts available)

Limited to 10 stones! Pigeon Blood Ruby (normally priced at 39,800 yen) Red Gemstone Gacha with AIGS Certificate (Multiple purchase discounts available)

Sold out Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available

Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available
Sold out Limited to 13 stones! Bicolor Gacha 💎 Bicolor Sphene, usually priced at ¥79,800, Party-color Paraiba Tourmaline, usually priced at ¥39,800, and more. (Multiple Purchase Discount Available)

Limited to 13 stones! Bicolor Gacha 💎 Bicolor Sphene, usually priced at ¥79,800, Party-color Paraiba Tourmaline, usually priced at ¥39,800, and more. (Multiple Purchase Discount Available)
Sold out Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) {Multiple Purchase Discounts Available}

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

Sphene 2 stones in different colors

Sold out Limited to 10 stones: Greenland Ruby (2mm, with certificate issued by the mine owner) - 1 loose stone - Multiple purchase discounts available

Limited to 10 stones: Greenland Ruby (2mm, with certificate issued by the mine owner) - 1 loose stone - Multiple purchase discounts available
Sold out Greenland Ruby Loose (approx. 2.3mm, Top Color, Certificate Included) (Multiple Purchase Discounts Available)

Greenland Ruby Loose (approx. 2.3mm, Top Color, Certificate Included) (Multiple Purchase Discounts Available)

Sold out Limited to 6 stones: 1 loose sphene from Zimbabwe (multiple purchase discounts available)

Limited to 6 stones: 1 loose sphene from Zimbabwe (multiple purchase discounts available)
Sold out Limited to 11 stones! Includes Koshu Precious Stone Kiriko plusthree "Irodori," normally priced at 74,800 yen. Sphene Gacha. Multiple purchase discounts available.

Limited to 11 stones! Includes Koshu Precious Stone Kiriko plusthree "Irodori," normally priced at 74,800 yen. Sphene Gacha. Multiple purchase discounts available.
Sold out マダガスカル産スフェーン 0.935ctルース

[Dandelion Cut] Madagascar Sphene 6.0mm/0.935ct Loose Stone

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）

Ice ruby ​​from Greenland 1 stone (heart shape, 4mm) Comes with original pouch

Sold out Limited to 6 stones: 1 loose sphene stone from Madagascar (round cut, 4mm) Multiple purchase discounts available

Limited to 6 stones: 1 loose sphene stone from Madagascar (round cut, 4mm) Multiple purchase discounts available
Sold out マダガスカル産バイカラースフェーン 4.494ctルース

Madagascar Bi-color Sphene 4.494ct Loose Stone

Sold out Untreated Vietnamese Star Ruby 1.696ct Loose Stone with Certification

Untreated Vietnamese Star Ruby 1.696ct Loose Stone with Certification
Sold out Unheated Pigeon Blood Ruby 0.260ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 0.260ct Loose Stone AIGS
Sold out Ruby 0.289ct loose stone by Takakikyo

Ruby 0.289ct loose stone by Takakikyo

Sold out Limited to 2 stones: Greenland Ruby, 1 stone, loose (2.2mm, top color, with certificate) (Multiple purchase discount available)

Limited to 2 stones: Greenland Ruby, 1 stone, loose (2.2mm, top color, with certificate) (Multiple purchase discount available)

Sold out K18PG Thai Pigeon Blood Ruby 0.38ct Ring AIGS

K18PG Thai Pigeon Blood Ruby 0.38ct Ring AIGS
Sold out Ruby 3.3mm/0.171ct Loose

Ruby 3.3mm/0.171ct Loose
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone

Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out Pigeon blood ruby ​​0.310ct loose

Pigeon blood ruby ​​0.310ct loose
Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS

Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS
Sold out Ruby 0.258ct loose

Ruby 0.258ct loose

Sold out Mozambique Ruby 0.481ct Loose Stone with Certificate of Authenticity

Mozambique Ruby 0.481ct Loose Stone with Certificate of Authenticity
Sold out Unheated Burmese Ruby 0.227ct Loose Stone, Nikko Kan

Unheated Burmese Ruby 0.227ct Loose Stone, Nikko Kan
Sold out Unheated star ruby ​​from Myanmar, 0.617ct loose

Unheated star ruby ​​from Myanmar, 0.617ct loose
Sold out Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS
Sold out [Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

[Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

Sold out [Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone

[Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone

Sold out パキスタン産カラーチェンジスフェーン 7.137ctルース

Color change sphene from Pakistan 7.137ct loose
Sold out ミャンマー産トラピッチェルビー 0.179ct原石

Myanmar trapichel ruby ​​0.179ct rough stone
Sold out 【12545153掲載】ミャンマー産トラピッチェルビー 0.160ct原石

Myanmar trapichel ruby ​​0.160ct rough stone
Sold out ミャンマー産非加熱ルビー 0.433ctルース

Unheated Ruby from Myanmar 0.433ct Ruth Japanese-German Edition
Sold out ミャンマー産トラピッチェルビー 0.202ct原石

Trapichel ruby ​​from Myanmar 0.202ct rough stone
Sold out ミャンマー産トラピッチェルビー 0.152ct原石

Myanmar trapichel ruby ​​0.152ct rough stone
Sold out ミャンマー産トラピッチェルビー 0.261ct原石

Myanmar trapichel ruby ​​0.261ct rough stone
Sold out グリーンランド産ルビー 0.737ctルース

Greenland Ruby 0.737ct Loose Stone with Certificate
Sold out K18YG マダガスカル産スフェーン 0.597ct ペンダントトップ（ネックレストップ）

18K Yellow Gold Madagascar Sphene 0.597ct Pendant (Necklace)
Sold out ピジョンブラッドルビー 3.7mm/0.230ctルース AIGS

Pigeon Blood Ruby 3.7mm/0.230ct Loose Stone AIGS

Sold out Greenland Ruby 3.2mm/0.152ct Loose Stone with Certificate

Greenland Ruby 3.2mm/0.152ct Loose Stone with Certificate
Sold out グリーンランド産ルビー 0.220ctルース

Greenland Ruby 3.6mm/0.220ct Loose Stone with Certificate
Sold out グリーンランド産ルビー 0.134ctルース

Greenland Ruby 3.0mm/0.134ct Loose Stone with Certificate
Sold out ジンバブエ産スフェーン 1.028ctルース

Zimbabwean sphene 1.028ct loose stone

Sold out マダガスカル産スフェーン 0.711ctルース

Sphene from Madagascar 0.711ct loose

Sold out ジンバブエ産スフェーン 1.057ctルース

Zimbabwean sphene 1.057ct loose stone

Sold out 非加熱ピジョンブラッドルビー 0.300ctルース AIGS

Unheated Pigeon Blood Ruby 0.300ct Loose
Sold out ピジョンブラッドルビー 5.2mm/0.930ctルース AIGS

Pigeon Blood Ruby 0.930ct Loose

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.