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blue sapphire

Blue sapphire can be said to be the representative of blue gemstones.
Sapphires come in a wide variety of colors and come in many shades, but when they are simply referred to as "sapphires", they refer to blue sapphires.
It is a jewel that has been loved by the British royal family, including the engagement ring of the late Princess Diana.
The most valuable colors are cornflower blue and royal blue.
Sapphire is the birthstone for September.

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Sri Lankan Blue Sapphire (Ice Blue) 0.272ct Loose

Sri Lankan Blue Sapphire (Ice Blue) 0.272ct Loose Sale price¥12,800
1.689ct loose teal blue sapphire

1.689ct loose teal blue sapphire Sale price¥98,000
Sri Lankan blue sapphire 1.008ct loose stone

Sri Lankan blue sapphire 1.008ct loose stone Sale price¥69,800
Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire)

Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire) Sale price¥14,800
サファイア 3.813ctルース

Ice blue sapphire 3.813ct loose Sale price¥49,800
スリランカ産ブルーサファイア 0.187ctルース

Sri Lankan blue sapphire 0.187ct loose stone Sale price¥29,800
ブルーサファイア 0.332ctルース

Blue sapphire 4.1mm/0.332ct loose stone Sale price¥25,800
ブルーサファイア 0.291ctルース

Blue sapphire 0.291ct loose stone Sale price¥18,800
ブルーサファイア 0.295ctルース

Blue sapphire 0.295ct loose stone Sale price¥7,980
ブルーサファイア 0.266ctルース

0.266ct loose blue sapphire from Madagascar Sale price¥8,800
ブルーサファイア 0.333ctルース

Sri Lankan Blue Sapphire 4.2mm/0.333ct Loose Stone Sale price¥12,800
ブルーサファイア 0.371ctルース

Sri Lankan blue sapphire, 4.3mm/0.371ct, loose Sale price¥12,800
マダガスカル産ブルーサファイア（アイスブルー） 0.694ctルース

Madagascar Blue Sapphire (Ice Blue) 0.694ct Loose Sale price¥18,800
マダガスカル産ブルーサファイア（アイスブルー） 0.263ctルース

Madagascar Blue Sapphire (Ice Blue) 0.263ct Loose Sale price¥12,800
マダガスカル産ブルーサファイア（アイスブルー） 0.584ctルース

Madagascar Blue Sapphire (Ice Blue) 0.584ct Loose Sale price¥19,800
ブルーサファイア 0.251ctルース

Sri Lankan Blue Sapphire 0.251ct Loose Sale price¥12,800
Pt950 パープルサファイア 0.318ct ピアス

Pt950 Sri Lankan purple sapphire 0.318ct and blue sapphire earrings Sale price¥39,800
モンタナサファイア 0.275ctルース

Montana Sapphire 0.275ct Loose (Blue Sapphire) Sale price¥8,800
モンタナサファイア 0.217ctルース

Montana Sapphire 0.217ct Loose (Blue Sapphire) Sale price¥8,800
ブルーサファイア 0.326ctルース

Madagascar Blue Sapphire 4.0mm/0.326ct Loose Sale price¥11,000
スリランカ産非加熱サファイア 0.344ctルース

Sri Lankan Blue Sapphire 0.344ct Loose Sale price¥12,800
モンタナサファイア 0.272ctルース

Montana Sapphire 3.7mm/0.272ct Loose Stone (Blue Sapphire) Sale price¥9,800
モンタナサファイア 0.207ctルース

Montana Sapphire (Blue Sapphire) 0.207ct Loose Sale price¥6,980
Sold out Limited to 19 stones: Blue sapphire from Madagascar (medium blue, oval cut) Discounts available for multiple purchases

Limited to 19 stones: Blue sapphire from Madagascar (medium blue, oval cut) Discounts available for multiple purchases
Sold out Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)

Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)
Sold out Sapphire Gacha where you can win a Cornflower Blue Sapphire with AIGS certificate 💎 Comes with a trillion sapphire as a bonus gift《Multiple purchase discount available》

Sapphire Gacha where you can win a Cornflower Blue Sapphire with AIGS certificate 💎 Comes with a trillion sapphire as a bonus gift《Multiple purchase discount available》
Sold out 《Limited to 16 stones》Cornflower Blue Sapphire with AIGS certificate, Royal Blue Sapphire with certificate, (Plus a beautiful yellow sapphire worth 5,980 yen as a bonus) 💎Blue Sapphire Gacha 《Multiple purchase discount available》

《Limited to 16 stones》Cornflower Blue Sapphire with AIGS certificate, Royal Blue Sapphire with certificate, (Plus a beautiful yellow sapphire worth 5,980 yen as a bonus) 💎Blue Sapphire Gacha 《Multiple purchase discount available》
Sold out [On sale August 1 at 10 PM] Limited 10 Stones: Sapphire Gacha (including unheated cornflower blue sapphires, normally ¥69,800), with a bonus Sange sapphire. Multiple purchase discount available.

[On sale August 1 at 10 PM] Limited 10 Stones: Sapphire Gacha (including unheated cornflower blue sapphires, normally ¥69,800), with a bonus Sange sapphire. Multiple purchase discount available.
Sold out Blue Sapphire Gacha Set Includes Two Unheated Royal Blue Sapphires (with AIGS Certificate) (Plus One Sapphire from the Teppanawa Mine) (Multiple Purchase Discounts Available)

Blue Sapphire Gacha Set Includes Two Unheated Royal Blue Sapphires (with AIGS Certificate) (Plus One Sapphire from the Teppanawa Mine) (Multiple Purchase Discounts Available)
Sold out [Available Oct 12, 10 PM] <limited to stones> Madagascar Blue Sapphire Loose Stone (Cabochon cut, avg. 0.70ct) <multi-buy discount available></multi-buy></limited>

[Available Oct 12, 10 PM] Madagascar Blue Sapphire Loose Stone (Cabochon cut, avg. 0.70ct)

Sold out K18WG ブラックオパール 1.09ct ブルーサファイア0.24ctリング鑑別書

[Item 22602561] K18WG Black Opal 1.09ct and Blue Sapphire 0.24ct Ring with Appraisal Report

Sold out マダガスカル産ロイヤルブルーサファイア 4.0mm/0.377ctルース 鑑別書

[Deadline: Mon, 9/14, 10:00 AM: Lottery Sale_07] Madagascar Royal Blue Sapphire 4.0mm/0.377ct Loose Stone with Identification Report
Sold out ティールブルーサファイア 0.555ctルース

[Available 10/1 at 10 PM] Australian Teal Blue Sapphire 0.555ct Loose Stone
Sold out スリランカ産ブルーサファイア 0.754ctルース

[Available 9/21 at 10 PM] Sri Lankan Blue Sapphire 5.3mm/0.754ct Loose Stone
Sold out スリランカ産ブルーサファイア 0.680ctルース

[Available 9/12, 10 PM] Sri Lankan Blue Sapphire 0.680ct Loose Gemstone with Identification Report
Sold out K18WG ブルーサファイア パライバトルマリン、アクアマリン、エメラルド、アイスブルーダイヤモンド(トリートメント)、ブルーサファイア、イエローサファイア、アパタイト、ペリドット、タンザナイト、ブルートパーズリング鑑別書

[Available 9/9 at 10 PM] [Colori] K18WG Blue Sapphire, Paraiba Tourmaline, Aquamarine, Emerald, Ice Blue Diamond, Yellow Sapphire, Apatite, Peridot, Tanzanite, Blue Topaz Ring with Appraisal Certificate
Sold out Pt900 ロイヤルブルーサファイア 0.361ct・ダイヤモンド0.86ctリング鑑別書

[On sale 9/14 at 10 PM] [Coloriful] Pt900 Royal Blue Sapphire 0.361ct & Diamond 0.86ct Ring with Appraisal Report
Sold out 合成サファイア 1.791ctルース

[On sale 9/11 at 10 PM] Synthetic Blue Sapphire Loose Stone, 1.791 ct
Sold out マダガスカル産ロイヤルブルーサファイア 0.623ctルース 鑑別書

[Lottery Sale 0818_06] Madagascar Royal Blue Sapphire 0.623ct Loose Stone with Certificate
Sold out ブルーサファイア 0.176ctルース

[8/30 10:00 PM Release] Blue Sapphire 0.176ct Loose Gemstone
Sold out ブルーサファイア 0.148ctルース

[Available Aug 30, 10:00 PM] Blue Sapphire 0.148ct Loose Stone
Sold out スリランカ産ブルーサファイア 0.286ctルース 鑑別書

[On Sale August 23rd, 10 PM] Sri Lankan Blue Sapphire 0.286ct Loose Stone with Certificate
Sold out マダガスカル産ロイヤルブルーサファイア 0.559ctルース

[12564014 listed] Madagascar Royal Blue Sapphire 0.559ct Loose Stone
Sold out スリランカ産ブルーサファイア 0.566ctルース 日独鑑

0.566ct Loose Blue Sapphire from Sri Lanka, with Japan-Germany appraisal
Sold out マダガスカル産非加熱ロイヤルブルーサファイア 1.030ctルース

Madagascar Unheated Royal Blue Sapphire 1.030ct Loose AIGS

Sold out Pt900 ブルーサファイア 0.52ct・ダイヤモンド0.19ctペンダントトップ（ネックレストップ）鑑別書

[22602649 Published] [Colorful] Pt900 Blue Sapphire 0.52ct Pendant Top (Necklace Top)
Sold out スリランカ産ブルーサファイア 0.269ctルース

Sri Lankan Blue Sapphire 4.0mm/0.269ct Loose with Certificate
Sold out マダガスカル産ブルーサファイア 0.406ctルース

Madagascan Blue Sapphire 4.5mm/0.406ct 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.