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9月誕生石

September birthstone

September's birthstone is sapphire kunzite .

Although sapphires have a strong impression of blue, they actually come in a variety of colors, including yellow, green, orange, and pink. It belongs to the same mineral corundum as ruby , which has an impressive red color. When we simply call it "sapphire", we are referring to blue sapphire . The next most valuable sapphire after blue sapphire is padparadscha sapphire , which has a color that is a mixture of orange and pink.

Kunzite is a gemstone that is popular among collectors because of its pink to purple color. It is a type of mineral spodumene. It is said that the stronger the purple flavor, the higher the value. Due to its brittle nature, care must be taken when wearing it as jewelry.

Karatz GemMagazine
" List of September birthstones/birthstones "

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Sold out Limited to 17 stones: Tanzanian bicolor sapphire, loose stone (multiple purchase discounts available)

Limited to 17 stones: Tanzanian bicolor sapphire, loose stone (multiple purchase discounts available)
Sold out 1 loose sapphire from Ratnapura, Sri Lanka (3.0mm-4.0mm, trilliant cut)《Multiple purchase discount available》

1 loose sapphire from Ratnapura, Sri Lanka (3.0mm-4.0mm, trilliant cut)《Multiple purchase discount available》

Sold out [12/21 10 PM Sale] Red Gemstone Gacha including Pigeon Blood Ruby AIGS worth ¥60,000 💎 Ruby and Hot Pink Sapphire {Multiple Purchase Discounts Available}

[12/21 10 PM Sale] Red Gemstone Gacha including Pigeon Blood Ruby AIGS worth ¥60,000 💎 Ruby and Hot Pink Sapphire {Multiple Purchase Discounts Available}
Sold out Limited to 11 stones: One loose, unheated silky pink sapphire from Vietnam (2.0-2.5mm, with lots of inclusions) [Multiple purchase discounts available]

Limited to 11 stones: One loose, unheated silky pink sapphire from Vietnam (2.0-2.5mm, with lots of inclusions) [Multiple purchase discounts available]

Sold out Only one left! Blue Sapphire Gacha Set Includes Two Unheated Royal Blue Sapphires (with AIGS Certificate) (Plus One Sapphire from the Teppanawa Mine) (Multiple Purchase Discounts Available)

Only one left! 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 Limited to 15 stones: Blue Stone Gacha (Top-Color Benitoite 2.0mm, Paraiba Tourmaline in Quartz, Unheated Yogo Sapphire) (Multiple purchase discounts available)

Limited to 15 stones: Blue Stone Gacha (Top-Color Benitoite 2.0mm, Paraiba Tourmaline in Quartz, Unheated Yogo Sapphire) (Multiple purchase discounts available)
Sold out Limited to 16 stones: 1 Montana sapphire loose stone (including teal blue and bicolor) Multiple purchase discounts available

Limited to 16 stones: 1 Montana sapphire loose stone (including teal blue and bicolor) Multiple purchase discounts available
Sold out [Available at 10 PM on January 2nd] [Limited to 11 stones] Bicolor Gacha (Includes Zimbabwean Bicolor Euclase, Bicolor Sapphire, and Bicolor Zoisite) [Multiple purchase discounts available]

[Available at 10 PM on January 2nd] [Limited to 11 stones] Bicolor Gacha (Includes Zimbabwean Bicolor Euclase, Bicolor Sapphire, and Bicolor Zoisite) [Multiple purchase discounts available]
Sold out Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.

Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.
Sold out [3 sets left] Gemstone Gacha 💎 1 of the Three Great Gemstones Gacha + 2 Loose Pink Sapphires [Multiple purchase discounts available]

[3 sets left] Gemstone Gacha 💎 1 of the Three Great Gemstones Gacha + 2 Loose Pink Sapphires [Multiple purchase discounts available]
Sold out [12/19 10 PM Sale] [Limited to 10 Stones] Zimbabwean Bicolor Euclase, Bicolor Sapphire, and More Bicolor Gacha 💎 Single Loose Stone [Multiple Purchase Discounts Available]

[12/19 10 PM Sale] [Limited to 10 Stones] Zimbabwean Bicolor Euclase, Bicolor Sapphire, and More Bicolor Gacha 💎 Single Loose Stone [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 8 stones: 1 Sri Lankan star sapphire loose stone (5mm, round cabochon cut) Multiple purchase discounts available

Limited to 8 stones: 1 Sri Lankan star sapphire loose stone (5mm, round cabochon cut) Multiple purchase discounts available
Sold out Rose-cut beryllium-treated sapphire, 1 loose stone (4mm, September birthstone) {Multiple purchase discounts available}

Rose-cut beryllium-treated sapphire, 1 loose stone (4mm, September birthstone) {Multiple purchase discounts available}
Sold out [On sale at 10 PM on November 24th] [Limited to 7 stones] Sri Lankan Star Sapphire (Loose) [Multiple purchase discounts available]

[On sale at 10 PM on November 24th] [Limited to 7 stones] Sri Lankan Star Sapphire (Loose) [Multiple purchase discounts available]
Sold out 【1/1 0時販売開始】🎍2026年新春福袋🎍《30万円プレミアム宝石福袋》非加熱カシミールサファイア0.2ctUPGIA付き＆フローレスorインタナリーフローレスダイヤモンドが必ず入る合計計4点宝石福袋《60万円相当》【福袋まとめて購入割引】　　

【1/1 0時販売開始】🎍2026年新春福袋🎍《30万円プレミアム宝石福袋》非加熱カシミールサファイア0.2ctUPGIA付き＆フローレスorインタナリーフローレスダイヤモンドが必ず入る合計計4点宝石福袋《60万円相当》【福袋まとめて購入割引】　　
Sold out [Available at 10 PM on December 20th] Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]

[Available at 10 PM on December 20th] Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]
Sold out [1/1 22:00 Sale] Royal Blue Sapphire 1.00ct Loose Stone AIGS

[1/1 22:00 Sale] Royal Blue Sapphire 1.00ct Loose Stone AIGS

Sold out ピンクサファイア 0.881ctルース

Pink sapphire 0.881ct loose

Sold out マダガスカル産バイカラーサファイア 0.259ctルース

Bicolor sapphire from Madagascar 0.259ct loose
Sold out [12/7 22:00] Sri Lankan Yellow Sapphire 0.508ct Loose

[12/7 22:00] Sri Lankan Yellow Sapphire 0.508ct Loose
Sold out [12/22 22:00] Sri Lankan Blue Sapphire 0.645ct Loose

[12/22 22:00] Sri Lankan Blue Sapphire 0.645ct Loose
Sold out [12/19 22:00 Sale] Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose

[12/19 22:00 Sale] Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose
Sold out [12/19 22:00 Sale] Madagascar Bicolor Sapphire 3.6mm/0.232ct Loose

[12/19 22:00 Sale] Madagascar Bicolor Sapphire 3.6mm/0.232ct Loose
Sold out [On Sale at 10 PM on January 3rd] 2.393ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)

[On Sale at 10 PM on January 3rd] 2.393ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)
Sold out ブラックスターサファイア 1.410ctルース

[12/5 22:00 Sale] Black Star Sapphire 1.410ct Loose
Sold out マダガスカル産ホットピンクサファイア 1.120ctルース

[On Sale 11/23 10pm] Madagascar Hot Pink Sapphire 1.120ct Loose GIA
Sold out グリーンランド産サファイア 0.271ctルース

[12/2 22:00] Greenland Sapphire 0.271ct Loose Stone with Certificate
Sold out スリランカ産ブルーサファイア（アイスブルー） 0.300ctルース

[11/27 22:00 Sale] Sri Lankan Blue Sapphire (Ice Blue) 0.300ct Loose
Sold out Sri Lankan Purple Sapphire 0.393ct Loose Stone with Certificate of Authenticity

Sri Lankan Purple Sapphire 0.393ct Loose Stone with Certificate of Authenticity
Sold out ブルーサファイア 1.095ctルース

[On sale at 10pm on November 29th] 1.095ct loose blue sapphire
Sold out タンザニア産バイカラーサファイア 0.343ctルース

[11/18 22:00 Sale] Tanzanian Bicolor Sapphire 0.343ct Loose
Sold out アフガニスタン産クンツァイト 7.335ctルース

[11/18 22:00 Sale] Afghanistan Kunzite 7.335ct Loose Stone
Sold out モザンビーク産ピンクサファイア 0.213ctルース（ホットピンクサファイア）

Pink sapphire from Mozambique 0.213ct loose (hot pink sapphire)
Sold out タンザニア産バイカラーサファイア 1.002ctルース

[12544901 published] Bicolor sapphire 1.000ct loose
Sold out タンザニア産ピンクサファイア 0.566ctルース

[12544896 published] Sapphire 0.566ct loose
Sold out ミャンマー産スターサファイア 11.192ctルース

[11/11 22:00 Sale] Myanmar Star Sapphire 11.192ct Loose

Sold out K18YG コーンフラワーブルーサファイア 4.5mm/0.41ct・アウイナイト・パライバトルマリン リング

18K Yellow Gold Cornflower Blue Sapphire 4.5mm/0.41ct, Apatite, and Paraiba Tourmaline Ring

Sold out 【猫カット】タイ産サファイア 5.255ctルース

[11/9 22:00 Sale] [Cat Cut] Thai Sapphire 5.255ct Loose
Sold out 【猫カット】タイ産サファイア 4.746ctルース

[11/9 22:00 Sale] [Cat Cut] Thai Sapphire 4.746ct Loose
Sold out バイカラーサファイア 0.299ctルース

[11/22 22:00] Tanzanian Bicolor Sapphire 0.299ct Loose
Sold out スリランカ産ブルーサファイア 0.555ctルース

[11/3 22:00] Sri Lankan Blue Sapphire 0.555ct Loose
Sold out アフガニスタン産クンツァイト 0.753ctルース

[11/2 22:00 Sale] Afghanistan Kunzite 0.753ct Loose Stone
Sold out ヴァイオレットサファイア 0.310ctルース

[On sale at 10pm on November 7th] Violet sapphire 0.310ct loose stone
Sold out 非加熱ロイヤルブルーサファイア 0.640ctルース AIGS

Unheated Royal Blue Sapphire 0.640ct Loose AIGS

Sold out Pt950 バイカラーサファイア 0.398ct リング

Pt950 Madagascar Color Change Sapphire (Bicolor Sapphire) 0.398ct Ring

Sold out パパラチアサファイア 0.251ctルース

Padparadscha Sapphire 0.251ct Loose Stone
Sold out 【12548919掲載】非加熱バイカラーサファイア 2.600ctルース

[12548919 published] Unheated bicolor sapphire 2.600ct 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.