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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 バイカラータンザナイト 3.750ctルース
Sold out Bicolor Zoisite 2.600ct Loose (Bicolor Tanzanite)
Sold out タンザナイト 1.830ctルース
Sold out タンザナイト 1.34ctルース
Sold out ヒートチェンジジルコン 0.95ctルース
Sold out タンザナイト 1.46ctルース
Sold out 【12525129掲載】タンザナイト 1.38ctルース
Sold out 【12525127掲載】タンザナイト 1.25ctルース
Sold out 【12525126掲載】タンザナイト 1.19ctルース
Sold out タンザナイト 0.80ctルース
Sold out 【甲州貴石切子】ブルージルコン 2.04ctルース - カラッツSTORE
Sold out K18ターコイズ×ロッククリスタルリング - カラッツSTORE
Sold out K18PGアイオライト・タンザナイトリング - カラッツSTORE
Sold out 【12524977掲載】タンザナイト 1.67ctルース
Sold out 【12524974掲載】タンザナイト 1.11ctルース
Sold out 【12524973掲載】タンザナイト 1.07ctルース
Sold out 【12524970掲載】タンザナイト 0.86ctルース
Sold out 【ダンデライオンカット】タンザナイト 1.38ctルース
Sold out [Dandelion cut] Tanzanite 7mm/1.25ct loose with patch
Sold out 【ダンデライオンカット】タンザナイト 2.35ctルース - カラッツSTORE
Sold out ピンクジルコン 1.17ctルース
Sold out ピンクジルコン 0.97ctルース
Sold out ピンクジルコン 0.75ctルース
Sold out ピンクジルコン 0.607ctルース
Sold out 【12524783掲載】ピンクジルコン 0.594ctルース
Sold out 【12524782掲載】ピンクジルコン 0.540ctルース
Sold out ★【11524834掲載】タンザナイト 0.92ctルース
Sold out ラベンダータンザナイト 0.97ctルース
Sold out Tanzanite 1.29ct loose
Sold out 【11524830掲載】ゾイサイト 1.21ctルース
Sold out ブルージルコン 6.17ctルース
Sold out ブルージルコン 5.45ctルース
Sold out 【11524825掲載】ブルージルコン 1.38ctルース
Sold out 【11524824掲載】ブルージルコン 1.19ctルース
Sold out ブルージルコン 4.35ctルース
Sold out 【11524821掲載】ブルージルコン 3.71ctルース
Sold out 【11524814掲載】タンザナイト 0.98ctルース
Sold out タンザナイト 1.58ctルース
Sold out 【11524811掲載】タンザナイト 5.46ctルース
Sold out 【11524810掲載】タンザナイト 4.71ctルース
Sold out 【11524809掲載】タンザナイト 4.48ctルース
Sold out 【11524689掲載】タンザナイト 2.81ctルース
Sold out 【11524688掲載】タンザナイト 1.90ctルース
Sold out 【11524686掲載】タンザナイト 1.69ctルース
Sold out 【12524677掲載】ジルコン 3.17ct原石
Sold out 【12524673掲載】ジルコン 3.23ct原石
Sold out K18ラピスラズリ・クォーツリング - カラッツSTORE
Sold out タンザナイト 2.320ct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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.