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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 Bicolor tanzanite 2.270ct loose
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 タンザニア産タンザナイト 0.780ctルース
Sold out タンザナイト 1.024ctルース
Sold out タンザニア産ジルコン 0.635ctルース
Sold out 【サンジェ氏】ブルージルコン 0.540ctルース
Sold out ジルコン 1.818ctルース
Sold out バイカラータンザナイト 0.585ctルース
Sold out タンザナイト 5.930ct原石
Sold out バイカラータンザナイト 0.739ctルース
Sold out カンボジア産ブルージルコン 0.338ctルース
Sold out Water Play 13 Stone Set (Santa Maria Aquamarine, Sea Blue Chalcedony, Blue Zircon, Diamond, etc.) Half Eternity Ring Set (2.0mm)
Sold out Night purple 13 stone set (hackmanite, tanzanite, black spinel, diamond, etc.) Half eternity ring set (2.0mm)
Sold out K18PGベニトアイト0.19 リング
Sold out Tanzanite 0.781ct loose stone
Sold out マラウイ産バイカラージルコン 1.646ctルース
Sold out Cambodian blue zircon (Ratanakiri blue) 3.449ct loose
Sold out 【サンジェ氏】ブルージルコン 0.115ctルース
Sold out タンザナイト 0.579ctルース
Sold out タンザナイト 0.525ctルース
Sold out タンザナイト 0.435ct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) 2.284ctルース
Sold out ミャンマー産カラーチェンジジルコン 2.030ctルース 日独鑑
Sold out ラピスラズリ 171.543ctオブジェ
Sold out タンザナイト 2.362ctルース
Sold out タンザナイト 2.477ctルース
Sold out タンザナイト 2.273ctルース
Sold out タンザナイト 2.880ctルース
Sold out タンザナイト 4.570ctルース(バフトップ)
Sold out 【ダンデライオンカット】ラベンダータンザナイト6mmルース - カラッツSTORE
Sold out 【甲州貴石切子】ピンクジルコン 1.480ctルース - カラッツSTORE
Sold out Bicolor Zoisite 2.20ct loose (Bicolor Tanzanite)
Sold out タンザナイト 2.140ctルース
Sold out バイカラーゾイサイト 2.020ctルース
Sold out タンザナイト 1.24ctルース
Sold out タンザナイト 1.07ctルース
Sold out 【さくらインカット】タンザナイト 1.07ctルース
Sold out 【11524687掲載】タンザナイト 1.75ctルース
Sold out Tanzanite 1.320ct loose
Sold out 【12524450掲載】タンザナイト 1.290ctルース
Sold out 【12524449掲載】タンザナイト 1.140ctルース
Sold out 【さくらインカット】タンザナイト 6mmルース - カラッツSTORE
Sold out K18バイカラーゾイサイト0.77ct リング(バイカラータンザナイト) - カラッツSTORE
Sold out K18タンザナイト0.62ct・ピンクサファイア ペンダント(ネックレス) - カラッツSTORE
Sold out K18タンザナイト0.78ct リング - KARATZ STORE|カラッツSTORE
Sold out K18タンザナイト1.05ct リング - KARATZ STORE|カラッツSTORE

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.