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12月誕生石

december birthstone

December's birthstones are turquoise , lapis lazuli , tanzanite , and zircon .

Turquoise is a gemstone with a unique blue-green color that is famous for being used in Indian jewelry. Some have a distinctive black tracery pattern called a spider web. High-quality products without mesh patterns are called "Sleeping Beauty."

Lapis lazuli , also known as lapis lazuli in Japanese, is a gemstone that was once widely used as a paint. It is also famous for being used in Vermeer's masterpiece, ``Girl with a Pearl Earring.'' Gemstones are made from a collection of multiple minerals, and those that contain golden pyrite are often likened to the night sky, and I think they are gemstones with a unique beauty.

Tanzanite is the gemstone name given to the blue to violet zoisite. It is also famous for its strong pleochroism, which shows different colors when viewed from different angles, making it an attractive gemstone that makes you want to collect many different colors and pleochroisms. Large crystals can often be found here, so it is also recommended for those who like large gemstones.

Zircon is thought to be the first mineral formed on Earth, and is a gemstone that has been with humans since ancient times. When exposed to light, it emits strong dispersed light (fire). One of its characteristics is that it exhibits a phenomenon called doubling, in which letters and facet edges placed underneath appear double.

Karatz GemMagazine
" List of December birthstones/birthstones "

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Sold out 【9/12  22時販売】《限定10石》通常32800円のトップカラーのベニトアイトやサンジェ氏ブルージルコン含むファイアが綺麗な宝石ガチャ《複数購入割引有》
Sold out [On sale 8/12, 10 PM] "Limited to 10 stones" Strong Fire Gem Gacha featuring 3mm Benitoite and Blue Zircon, normally 42,800 yen (multiple purchase discount available)
Sold out Tanzanite rough and loose stone set of 2 (average 3.3ct, special cut) from Tanzania {Multiple purchase discounts available}
Sold out Tanzanite rough and loose stone set of 2 (average 3ct, cushion cut) from Tanzania {Multiple purchase discounts available}
Sold out Bicolor tanzanite 2.270ct loose
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
Sold out タンザナイト 1.182ctルース
Sold out タンザニア産ピンクゾイサイト 0.835ctルース
Sold out カンボジア産ブルージルコン(ラタナキリブルー) 0.419ctルース
Sold out カンボジア産ブルージルコン(ラタナキリブルー) 3.256ctルース
Sold out タンザニア産タンザナイト 1.878ctルース
Sold out K18WG タンザナイト 0.96ct・ダイヤモンド0.03ctペンダントトップ(ネックレストップ)鑑別書
Sold out Pt900/Pt850 カンボジア産ブルージルコン(ラタナキリブルー) 2.45ct ペンダント(ネックレス) 中宝ソ
Sold out タンザナイト 0.760ctルース
Sold out カンボジア産ブルージルコン 0.744ctルース
Sold out カンボジア産オレンジジルコン 3.800ctルース
Sold out ラピスラズリ 0.874ctルース
Sold out カンボジア産ブルージルコン(ラタナキリブルー) 1.455ctルース
Sold out カンボジア産ブルージルコン(ラタナキリブルー) 1.782ctルース
Sold out スリランカ産ジルコンキャッツアイ 2.087ctルース
Sold out タンザニア産タンザナイト 0.328ctルース
Sold out アフガニスタン産ラピスラズリ 3.279ctルース
Sold out アフガニスタン産ラピスラズリ 1.103ctルース
Sold out 【22602564掲載】K18 タンザナイト リング
Sold out Pt900 ブルージルコン(ラタナキリブルー) 2.27ct リング
Sold out Tanzanian Bicolor Tanzanite 0.419 ct Loose Stone
Sold out 【22602555掲載】K18 ターコイズ リング
Sold out バイカラータンザナイト 6.351ctルース
Sold out ブルージルコン 0.348ctルース
Sold out タンザナイト 0.580ctルース
Sold out ミャンマー産カラーチェンジジルコン 1.00ctルース(リバースカラーチェンジ)
Sold out 【12561526掲載】タンザニア産ピンクジルコン 1.736ctルース
Sold out カンボジア産ブルージルコン(ラタナキリブルー) 0.519ctルース
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.354ct Loose Stone
Sold out Sri Lankan green zircon 0.494ct loose stone
Sold out 【12561658掲載】タンザニア産タンザナイト 0.558ctルース
Sold out Tanzanite from Tanzania 0.331ct loose stone
Sold out Tanzanite 0.505ct loose stone from Tanzania
Sold out Tanzanian zircon, 1.672ct loose
Sold out Myanmar color change zircon 0.439ct loose stone
Sold out カラーチェンジジルコン 0.556ctルース
Sold out カンボジア産ブルージルコン(ラタナキリブルー) 0.615ctルース
Sold out Tanzanite from Tanzania 4.5mm/0.390ct Loose Stone AIGS
Sold out Tanzanite from Tanzania 0.417ct Loose Gemstone
Sold out Afghanistan Lapis Lazuli 11mm/5.263ct Loose Stone
Sold out 18K Yellow Gold Lavender Tanzanite 3.5mm/0.211ct Diamond Ring
Sold out Golden Hill Turquoise from Kazakhstan, 2.524ct Loose Stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.882ct 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.