Login

Ruby

Ruby is the birthstone of July. It is a type of corundum, the same mineral as sapphire, and is a red gemstone. It is also said to be the representative of red gemstones, and has a long history of being cherished all over the world since ancient times. With a hardness of 9, it is the second hardest after diamond and is highly durable, making it a gemstone that can be enjoyed on a daily basis as jewelry.

Karatz GemMagazine
" Ruby "

Sort by
K18 ルビー 0.33ct ペンダントトップ（ネックレストップ）

[Colorful] K18 Ruby 0.33ct/Diamond Pendant Top (Necklace Top) with Identification Report Sale price¥69,800
Ruby 0.528ct Loose Stone with Gem Identification Report

Ruby 0.528ct Loose Stone with Gem Identification Report Sale price¥28,800
【12562713掲載】ビルマ産ルビー 3.720ctルース

Burmese ruby 3.72ct loose GIA/CGL Sale price¥298,000
18K Yellow Gold Ruby Ring (Pigeon Blood Color)

18K Yellow Gold Ruby Ring (Pigeon Blood Color) Sale price¥128,000
Unheated Pigeon Blood Ruby 0.380ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 0.380ct Loose Stone AIGS Sale price¥79,800
Unheated Pigeon Blood Ruby 5.0mm/0.520ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 5.0mm/0.520ct Loose Stone AIGS Sale price¥128,000
ピジョンブラッドルビー 0.490ctルース

Pigeon Blood Ruby 4.6mm/0.490ct Loose Sale price¥128,000
ピジョンブラッドルビー 0.250ctルース

Pigeon Blood Ruby 0.250ct Loose Stone Sale price¥79,800
グリーンランド産ルビー 0.253ctルース

Greenland Ruby 0.253ct Loose Stone with Certificate Sale price¥49,800
グリーンランド産ルビー 0.266ctルース

Greenland Ruby 0.266ct Loose Stone with Certificate Sale price¥22,800
グリーンランド産ルビー 0.360ctルース

Greenland Ruby 0.360ct Loose Stone with Certificate Sale price¥69,800
[12559773] Ruby 0.122ct loose stone

[12559773] Ruby 0.122ct loose stone Sale price¥14,800
ピジョンブラッドルビー 0.290ctルース

Pigeon Blood Ruby 4.0mm/0.290ct Loose Stone AIGS Sale price¥59,800
グリーンランド産ルビー 0.210ctルース

Greenland Ruby 3.6mm/0.210ct Loose Stone with Certificate Sale price¥45,800
ピジョンブラッドルビー 0.280ctルース AIGS

Pigeon Blood Ruby 0.280ct Loose Sale price¥49,800
Ruby from Greenland 0.268ct loose with certificate

Ruby from Greenland 0.268ct loose with certificate Sale price¥18,800
グリーンランド産ルビー 0.307ctルース 証明書付

Ruby from Greenland 0.307ct loose with certificate Sale price¥15,800
ルビー 0.284ctルース

Ruby 0.284ct loose Sale price¥15,800
Sold out [Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

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

[Jeweler's Tools] 2-piece set for distinguishing impregnated rubies and natural rubies (discount available for multiple purchases)

Sold out Limited to 20 stones! Includes 6 red gemstones of pigeon blood ruby ​​with AGL certificate. Discounts available for multiple purchases.

Limited to 20 stones! Includes 6 red gemstones of pigeon blood ruby ​​with AGL certificate. Discounts available for multiple purchases.
Sold out 《Limited to 15 Stones》Ruby Gacha with 2 Pigeon Blood Rubies with Certificates (Synthetic Ruby as a Bonus)《Multiple Purchase Discount Available》

《Limited to 15 Stones》Ruby Gacha with 2 Pigeon Blood Rubies with Certificates (Synthetic Ruby as a Bonus)《Multiple Purchase Discount Available》
Sold out Limited to 18 stones: Mozambique ruby ​​(princess cut, 2.3-2.5mm) Multiple purchase discounts available

Limited to 18 stones: Mozambique ruby ​​(princess cut, 2.3-2.5mm) Multiple purchase discounts available
Sold out Ruby Lottery: Win a 0.59ct Pigeon Blood Ruby with AIGS or a Burmese Star Ruby (Multiple Purchase Discounts Available)

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》

Greenland Ice Ruby 1 stone (heart shape, 4mm, pink sapphire) {Multiple purchase discount available}

Sold out Red Gemstone Gacha including Pigeon Blood Ruby AIGS worth ¥60,000 💎 Ruby and Hot Pink Sapphire (Multiple Purchase Discounts Available)

Red Gemstone Gacha including Pigeon Blood Ruby AIGS worth ¥60,000 💎 Ruby and Hot Pink Sapphire (Multiple Purchase Discounts Available)
Sold out グリーンランド産ルビー 1石（ラウンドカット,2mm）

1 Ruby from Greenland (round cut, 2mm) with certificate

Sold out Limited to 8 stones: 1 unheated silky pink sapphire from Vietnam (including silky ruby) Discounts for multiple purchases available

Limited to 8 stones: 1 unheated silky pink sapphire from Vietnam (including silky ruby) Discounts for multiple purchases available

Sold out Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》

Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《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 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 10 Stones》Flower-Cut Gem Gacha 💎 Usually 39,800 yen for Sakura-shaped and newly cut rubies (newly cut as a bonus) 《Bulk Purchase Discount Available》

《Limited to 10 Stones》Flower-Cut Gem Gacha 💎 Usually 39,800 yen for Sakura-shaped and newly cut rubies (newly cut as a bonus) 《Bulk Purchase Discount Available》
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 【Available Sept 7, 10:00 PM】《Limited to 12 stones》Ruby Gacha featuring Pigeon Blood Rubies and Star Rubies, regularly priced at 59,800 yen and including appraisal certificates 《Multi-purchase discounts available》

【Available Sept 7, 10:00 PM】《Limited to 12 stones》Ruby Gacha featuring Pigeon Blood Rubies and Star Rubies, regularly priced at 59,800 yen and including appraisal certificates 《Multi-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）

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

Sold out パキスタン産ルビーインクォーツ 1.429ctルース

Pakistan Ruby in Quartz 1.429ct Loose Stone
Sold out K18 ルビー 0.75ct ガーネット,サファイア,アメジスト,エメラルド,トパーズ,ダイヤモンドペンダントトップ（ネックレストップ）鑑別書

K18 ルビー 0.75ct ガーネット,サファイア,アメジスト,エメラルド,トパーズ,ダイヤモンドペンダントトップ（ネックレストップ）鑑別書

Sold out 非加熱ピジョンブラッドルビー 0.620ctルース AIGS

[Mon, Sep 14, 10:00 AM Deadline: Lottery Sale_09] Unheated Pigeon Blood Ruby 0.620ct Loose Stone AIGS

Sold out モザンビーク産ルビー 0.409ctルース

[On sale 8/22 at 10 PM] Mozambique Ruby 0.409ct Loose Stone (Houseki Kyo)
Sold out ビルマ産ピジョンブラッドルビー 0.450ctルース

[Lottery Sale 0725_11] Burmese Pigeon Blood Ruby 0.450ct Loose AIGS
Sold out ビルマ産ピジョンブラッドルビー 0.300ctルース

[12563504 Listed] Unheated Pigeon Blood Ruby from Burma 0.300ct Loose
Sold out ルビー 0.226ctルース

Mozambique Ruby 0.226ct Loose
Sold out ビルマ産ルビー 0.120ctルース

Burmese ruby 3.1mm/0.120ct loose stone with gemological report
Sold out モザンビーク産ルビー 0.300ctルース

0.300 ct Loose Mozambique Ruby with Certificate
Sold out モザンビーク産ルビー 0.415ctルース

0.415ct Mozambique Ruby Loose Stone with Gemstone Identification Report
Sold out K18 ルビー 0.44ct・ダイヤモンド0.18ctリング 鑑別書

[Calafuri] K18 Ruby 0.44ct, Diamond 0.18ct Ring with Appraisal Certificate
Sold out ルビー 0.496ctルース

Ruby 0.496 ct Loose Stone (Houseki Kyo)

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.