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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 タンザニア産タンザナイト 0.328ctルース
Sold out 【22602564掲載】K18 タンザナイト リング
Sold out 【22602584掲載】【カラフリ】Pt900 ブルージルコン(ラタナキリブルー) 2.27ct リング
Sold out タンザナイト 0.580ctルース
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 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
Sold out Golden Hill Turquoise from Kazakhstan, 2.235ct loose stone
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.537ct Loose
Sold out [Sakura In-Cut] Tanzanite from Tanzania 6.0mm/0.774ct Loose Stone
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.674ct Loose Stone
Sold out バイカラータンザナイト 0.581ctルース
Sold out ジルコン 0.416ctルース
Sold out 【サンジェ氏】ブルージルコン 0.322ct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) 2.143ctルース
Sold out スリランカ産グリーンジルコン 0.734ctルース
Sold out タンザニア産タンザナイト 0.637ctルース
Sold out オレンジジルコン 0.453ctルース
Sold out ピンクジルコン 0.508ctルース
Sold out 【サンジェ氏】ジルコン 0.414ctルース
Sold out "Purple Sun Night" Ice Blue Sapphire, Amethyst, Bekiri Blue Garnet, and Tanzanite 13-Stone Half Eternity Ring Set (2.0mm)
Sold out カンボジア産ブルージルコン(ラタナキリブルー) 2.232ct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) 1.513ctルース
Sold out 【サンジェ氏】タンザナイト 0.810ctルース - カラッツSTORE
Sold out 【KEN氏】ラベンダータンザナイト 1.620ctルース - カラッツSTORE
Sold out ピンクジルコン 0.930ctルース
Sold out タンザニア産タンザナイト 0.780ctルース
Sold out タンザニア産ジルコン 3.548ctルース
Sold out カンボジア産ブルージルコン 3.322ctルース
Sold out タンザナイト 1.024ctルース
Sold out カンボジア産カラーレスジルコン 0.414ctルース
Sold out タンザニア産ジルコン 1.035ctルース
Sold out タンザニア産ジルコン 0.364ctルース
Sold out タンザニア産ジルコン 0.635ct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) 0.484ctルース
Sold out 【サンジェ氏】ブルージルコン 0.540ctルース

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.