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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 【11523476掲載】タンザナイト 0.770ctルース
Sold out 【11523475掲載】タンザナイト 0.760ctルース
Sold out 【12523437掲載】ジルコン 0.250ctルース
Sold out 【12523215掲載】ジェレメジェバイト 0.540ct原石
Sold out 【12523108掲載】ジルコン 0.640ctルース
Sold out 【12522870掲載】タンザナイト 7mm ルース
Sold out 【11522806掲載】タンザナイト 1.220ctルース
Sold out 【11522804掲載】タンザナイト 7.280ctルース
Sold out 【11522768掲載】タンザナイト 1.350ctルース
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 【12522430掲載】ジルコン 0.770ctルース
Sold out 【12522428掲載】ジルコン 0.710ctルース
Sold out 【12522212掲載】ブルージルコン 1.890ctルース
Sold out 【12522211掲載】ブルージルコン 1.020ctルース
Sold out 【11521952掲載】バイカラータンザナイト 1.330ctルース
Sold out 【11521951掲載】タンザナイト 0.448ctルース
Sold out 【11521950掲載】タンザナイト 0.960ctルース
Sold out 【12521676掲載】タンザナイト 1.14ctルース
Sold out 【12521623掲載】タンザナイト 0.93ctルース
Sold out 【12521140掲載】ヒートチェンジジルコン 0.524ctルース
Sold out K18タンザナイト0.78ct リング - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 5.320ctルース - KARATZ STORE|カラッツSTORE
Sold out 【セミオーダー代込】さくらインカットのブルージルコン リング - KARATZ STORE|カラッツSTORE
Sold out ジルコン 1.01ctルース(ピンク系) - KARATZ STORE|カラッツSTORE
Sold out Cambodian Blue Zircon 1.00ct Loose
Sold out ブルージルコン 0.96ctルース - KARATZ STORE|カラッツSTORE
Sold out ジルコン 3.070ctルース(ファンシーイエロー) - 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
Sold out K18タンザナイト0.65ct リング - KARATZ STORE|カラッツSTORE
Sold out K18タンザナイト0.60ct リング - KARATZ STORE|カラッツSTORE
Sold out K18タンザナイトペンダント(ネックレス) - KARATZ STORE|カラッツSTORE
Sold out Pt900/Pt850タンザナイト ペンダント(ネックレス) - KARATZ STORE|カラッツSTORE
Sold out K18タンザナイト ペンダント(ネックレス) - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 1.64ctルース - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 4.179ct原石 - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 7.92ct原石 - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 1.415ctルース - KARATZ STORE|カラッツSTORE
Sold out タンザナイト原石・ルースセット 3.05ct - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 14.13ct原石 - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 3.809ct原石 - KARATZ STORE|カラッツSTORE
Sold out バイカラータンザナイト 1.220ctルース - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 0.631ctルース - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 0.271ctルース(オクタゴナルカット) - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 5.43ct原石 - KARATZ STORE|カラッツSTORE
Sold out グリーンジルコン 1.297ctルース - KARATZ STORE|カラッツSTORE
Sold out グリーンジルコン 1.332ctルース - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 3.092ct原石 - 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.

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.