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8月誕生石

August birthstone

August's birthstones are peridot , sardonyx , and spinel .

Peridot is a gemstone with an impressive refreshing green color like young grass. The mineral name olivine is said to be derived from its resemblance to the color of an olive fruit. It is said that it is sometimes included in meteorites, and they are called parasitic peridots .

Sardonyx is a type of agate , and refers to agate with striped patterns on a brown to reddish brown background. It is a gemstone that has been used as a material for cameos and intaglios since ancient times, and has been loved mainly in Europe. Those without stripes are called thirds.

Spinel is a gemstone that comes in many shades, including red, blue, and pink. It is often produced in the same octahedral shape as diamonds, and its rough form is also popular among collectors. With a high Mohs hardness of 8, it is a gemstone that can be enjoyed as everyday jewelry.

Karatz GemMagazine
" List of August birthstones and birthstones "

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Pink spinel 0.969ct loose Sale price¥9,800

Purple spinel 0.380ct loose Sale price¥8,800

Violet spinel 0.301ct loose Sale price¥9,800

Purple spinel 0.465ct loose Sale price¥5,980

Purple spinel 0.520ct loose Sale price¥8,800

Violet spinel 0.642ct loose Sale price¥8,800

Violet spinel 0.472ct loose Sale price¥9,800

Spinel 1.680ct loose Sale price¥8,800

Purple spinel 0.754ct loose Sale price¥9,800

Blue spinel 1.949ct loose Sale price¥29,800

Sold out Red spinel rough stone 1 stone (raspberry color)《Discount available for multiple purchases》
Sold out Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for advanced users: rough spinel from Mozambique)
Sold out 1 stone peridot (pyramid cut, 5mm)《Multiple purchase discount available》
Sold out 【12/7 22時販売】《限定10石》ブルー宝石ガチャ💎ブラジル産パライバトルマリン0.142ct・ジンバブエ産ユークレース・1.17ctのコバルトスピネル(鑑別書付:カラーシフト)・ベニトアイトなど《複数購入割引有》
Sold out Limited to 10 stones: Blue Spinel Gacha, Cobalt Spinel (including color-shifting type), 2 stones with Japanese and German appraisal certificates, and a bonus synthetic cobalt spinel. Discounts available for multiple purchases.
Sold out Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) {Multiple Purchase Discounts Available}
Sold out [Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available]
Sold out Color Change Gacha💎 Burmese Color Change Zircon, Color Shift Sapphire, Color Shift Cobalt Spinel, and More (Multiple Purchase Discounts Available)
Sold out Limited to 7 stones: 1 loose Sri Lankan spinel (lozenge cut) stone. Discounts available for multiple purchases.
Sold out Gem Gacha💎 [Sanjay] Tanzanian Spinel (1 in 3 will be a Red Spinel) Loose Stone (Multiple Purchase Discounts Available)
Sold out Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.
Sold out Limited to 3 stones: Myanmar gray spinel and platinum spinel (4.0mm, round cut) loose stone (multiple purchase discounts available)
Sold out Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)
Sold out [12/6 22:00] Myanmar Spinel in Marble 42.785ct Loose Stone
Sold out パキスタン産ペリドット 5.0mm/0.517ctルース
Sold out バイカラースピネル 0.737ctルース
Sold out タンザニア産マヘンゲスピネル 0.697ctルース
Sold out アメリカ産ペリドット 0.423ctルース
Sold out アメリカ産ペリドット 0.408ctルース
Sold out アメリカ産ペリドット 0.511ctルース
Sold out 【サンジェ氏】パープルスピネル 0.740ct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.

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.