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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 2.180ctルース
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 【カメリアカット】ラピスラズリ 3.650ctルース 直筆サイン付 - カラッツSTORE
Sold out ブルージルコン 1.130ctルース
Sold out タンザナイト 5.460ct原石
Sold out タンザナイト 6.080ct原石
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 【12525821掲載】バイカラーゾイサイト 1.710ctルース
Sold out バイカラーゾイサイト 1.230ctルース(バイカラータンザナイト)
Sold out バイカラータンザナイト 1.990ctルース
Sold out 【12525816掲載】バイカラータンザナイト 1.220ctルース
Sold out ブルージルコン 0.730ctルース
Sold out Blue zircon 2.280ct loose
Sold out 【12525766掲載】ジルコン 2.170ctルース
Sold out 【さくらインカット】ブルージルコン6mmルース - カラッツSTORE
Sold out 【ダンデライオンカット】ブルージルコン 1.170ctルース - カラッツSTORE
Sold out 【ダンデライオンカット】ブルージルコン 1.110ctルース - カラッツSTORE
Sold out 【さくらインカット】ブルージルコン 6mmルース - カラッツSTORE
Sold out タンザナイト 2.090ctルース
Sold out タンザナイト 1.160ctルース
Sold out 【12525495掲載】タンザナイト 1.030ct原石
Sold out タンザナイト 2.170ct原石
Sold out 【12525487掲載】タンザナイト 1.570ct原石
Sold out 【12525485掲載】タンザナイト 0.930ct原石
Sold out タンザナイト 1.160ctルース
Sold out 【12525457掲載】タンザナイト 1.100ctルース
Sold out Tanzanite 1.890ct loose
Sold out Bicolor Zoisite 3.155ct loose (Bicolor Tanzanite)
Sold out Bicolor Zoisite (Bicolor Tanzanite) 1.994ct Loose
Sold out タンザナイト 3.160ctルース
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 【12525196掲載】ヒートチェンジジルコン 1.42ctルース
Sold out 【12525128掲載】タンザナイト 1.28ctルース
Sold out 【12524976掲載】タンザナイト 1.40ctルース
Sold out Tanzanite 0.99ct loose
Sold out 【さくらインカット】タンザナイト 1.07ctルース
Sold out 【12524916掲載】ブルージルコン 0.96ctルース
Sold out 【11524818掲載】タンザナイト 0.89ctルース
Sold out 【11524817掲載】タンザナイト 1.05ctルース
Sold out 【11524816掲載】タンザナイト 1.25ctルース
Sold out 【11524815掲載】タンザナイト 0.85ctルース
Sold out 【11524687掲載】タンザナイト 1.75ctルース
Sold out ジルコン 3.24ct原石
Sold out 【12524682掲載】ジルコン 3.19ct原石

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.