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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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ピンクスピネル 0.342ctルース

Pink spinel 4.3mm/0.342ct loose Sale price¥6,980
ピンクスピネル 0.192ctルース

Pink spinel 3.8mm/0.192ct loose Sale price¥5,980
パープルスピネル 0.465ctルース

Purple spinel 0.465ct loose Sale price¥5,980
パープルスピネル 0.520ctルース

Purple spinel 0.520ct loose Sale price¥8,800
ヴァイオレットスピネル 0.642ctルース

Violet spinel 0.642ct loose Sale price¥8,800
ヴァイオレットスピネル 0.472ctルース

Violet spinel 0.472ct loose Sale price¥9,800
Myanmar Purple Spinel 1.364ct Loose Stone

Myanmar Purple Spinel 1.364ct Loose Stone Sale price¥29,800
非加熱ビルマ産ピンクスピネル 1.430ctルース

Unheated Burmese pink spinel 1.430ct loose AIGS Sale price¥188,000
スピネル 1.680ctルース

Spinel 1.680ct loose Sale price¥8,800
パープルスピネル 0.754ctルース

Purple spinel 0.754ct loose Sale price¥9,800
ブルースピネル 1.949ctルース

Blue spinel 1.949ct loose Sale price¥29,800
ラベンダースピネル 0.305ctルース

Lavender spinel 0.305ct loose Sale price¥7,980
Sold out [Available at 10 PM on January 11th] Limited Quantities! January Campaign Gem Gacha! Green Diamonds, Hot Pink Spinel, and More, Normally ¥39,800! Multi-Purchase Discounts Available!

[Available at 10 PM on January 11th] Limited Quantities! January Campaign Gem Gacha! Green Diamonds, Hot Pink Spinel, and More, Normally ¥39,800! Multi-Purchase Discounts Available!
Sold out Red spinel rough stone 1 stone (raspberry color)《Discount available for multiple purchases》

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)

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》

1 stone peridot (pyramid cut, 5mm)《Multiple purchase discount available》

Sold out Limited Edition of 10 Blue Gemstones! 💎 0.142ct Brazilian Paraiba Tourmaline, Euclase from Zimbabwe, 1.17ct Cobalt Spinel (Certificate of Authenticity: Color Shift), Benitoite, and More! Discounts Available for Multiple Purchases!

Limited Edition of 10 Blue Gemstones! 💎 0.142ct Brazilian Paraiba Tourmaline, Euclase from Zimbabwe, 1.17ct Cobalt Spinel (Certificate of Authenticity: Color Shift), Benitoite, and More! Discounts Available for Multiple Purchases!
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.

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 Limited to 10 stones! Rare Stone Gacha! 💎 Shinsha, Zimbabwean Euclase, Red Beryl, Star Peridot, and more. Multi-buy discounts available.

Limited to 10 stones! Rare Stone Gacha! 💎 Shinsha, Zimbabwean Euclase, Red Beryl, Star Peridot, and more. Multi-buy discounts 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 [Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available]

[Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available]
Sold out [Available at 10 PM on January 12th] Limited to 10 Blue Rare Stones Gacha💎 (Brazilian Paraiba Tourmaline, Indigolite Tourmaline, Benitoite, and Cobalt Spinel) [Multiple Purchase Discounts Available]

[Available at 10 PM on January 12th] Limited to 10 Blue Rare Stones Gacha💎 (Brazilian Paraiba Tourmaline, Indigolite Tourmaline, Benitoite, and Cobalt Spinel) [Multiple Purchase Discounts Available]
Sold out Color Change Gacha💎 Burmese Color Change Zircon, Color Shift Sapphire, Color Shift Cobalt Spinel, and More (Multiple Purchase Discounts Available)

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.

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)

Gem Gacha💎 [Sanjay] Tanzanian Spinel (1 in 3 will be a Red Spinel) Loose Stone (Multiple Purchase Discounts Available)
Sold out Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available]

Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available]

Sold out Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.

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)

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)

Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)

Sold out Sri Lankan Cobalt Spinel (Blue Spinel) 3.202ct Loose Stone (Needle-like Inclusions) Japan-German Rare Stone

Sri Lankan Cobalt Spinel (Blue Spinel) 3.202ct Loose Stone (Needle-like Inclusions) Japan-German Rare Stone

Sold out 【12547478掲載】ヴァイオレットスピネル 0.776ctルース

Myanmar Violet Spinel 0.776ct Loose

Sold out 18K Yellow Gold American Peridot 0.339ct Diamond Ring

18K Yellow Gold American Peridot 0.339ct Diamond Ring

Sold out [12/10 22:00 Sale] Pakistani Ludwigite Peridot 0.609ct Loose Stone

[12/10 22:00 Sale] Pakistani Ludwigite Peridot 0.609ct Loose Stone
Sold out ミャンマー産スピネルインマーブル 39.231ctルース

Myanmar spinel in marble 39.231ct loose stone

Sold out [1/4 22:00 Sale] American Peridot 0.334ct Loose Stone

[1/4 22:00 Sale] American Peridot 0.334ct Loose Stone
Sold out [1/2 22:00 Sale] Synthetic Spinel 1.793ct Loose

[1/2 22:00 Sale] Synthetic Spinel 1.793ct Loose
Sold out [1/2 22:00 Sale] Synthetic Cobalt Spinel 1.886ct Loose Stone

[1/2 22:00 Sale] Synthetic Cobalt Spinel 1.886ct Loose Stone
Sold out [Available at 10 PM on December 5th] 18K Yellow Gold Burmese Pink Spinel 3.9mm/0.276ct Hot Pink Spinel Ring

[Available at 10 PM on December 5th] 18K Yellow Gold Burmese Pink Spinel 3.9mm/0.276ct Hot Pink Spinel Ring
Sold out パキスタン産ペリドット 5.0mm/0.517ctルース

Pakistani Peridot 5.0mm/0.517ct Loose Stone
Sold out パキスタン産ルードヴィッヒアイトインペリドット 0.615ctルース

Pakistani Ludwigite Peridot 0.615ct Loose Stone
Sold out バイカラースピネル 0.737ctルース

Bicolor spinel 0.737ct loose

Sold out ミャンマー産ホットピンクスピネル 0.276ctルース

0.276ct loose hot pink spinel from Myanmar
Sold out タンザニア産マヘンゲスピネル 0.697ctルース

Tanzanian Mahenge Spinel 0.697ct Loose Stone

Sold out 【KEN氏】ヴァイオレットスピネル 0.514ctルース - カラッツSTORE

Violet spinel 0.514ct loose stone
Sold out アメリカ産ペリドット 0.423ctルース

American Peridot 0.423ct Loose Stone
Sold out アメリカ産ペリドット 0.408ctルース

Pakistani Peridot 0.408ct Loose Stone
Sold out アメリカ産ペリドット 0.408ctルース

Pakistani Peridot 0.408ct Loose Stone
Sold out アメリカ産ペリドット 0.511ctルース

American Peridot 5.0mm/0.511ct Loose Stone

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.