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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 タンザナイト 3.090ct原石 - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 1.232ctルース - KARATZ STORE|カラッツSTORE
Sold out タンザナイト 1.913ctルース - KARATZ STORE|カラッツSTORE
Sold out イエロージルコン 0.613ctルース - KARATZ STORE|カラッツSTORE
Sold out ジルコン5石セット 2.449ct - KARATZ STORE|カラッツSTORE
Sold out タンザニア産タンザナイト 0.377ctルース
Sold out 【さくらインカット】タンザニア産タンザナイト 6.0mm/0.745ct《コラボ》ルース
Sold out マラウイ産バイカラージルコン 0.604ctルース
Sold out タンザニア産タンザナイト 0.273ctルース
Sold out タンザニア産バイカラータンザナイト 1.693ct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) 1.178ct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) 2.282ctルース
Sold out カンボジア産カラーレスジルコン 0.672ctルース(オレンジ蛍光)
Sold out バイカラータンザナイト 2.355ct原石・ルース2石セット
Sold out カラーチェンジジルコン 0.312ctルース
Sold out タンザナイト 0.844ctルース
Sold out タンザナイト 0.730ctルース
Sold out タンザナイト 1.208ctルース
Sold out アフガニスタン産ラピスラズリ 4.405ctルース
Sold out アフガニスタン産ラピスラズリ 0.991ctルース
Sold out 【12551925掲載】タンザナイト 0.735ctルース
Sold out タンザナイト 6.078ctルース
Sold out Cambodian Yellow Zircon 4.8mm/0.662ct Loose Stone
Sold out ラピスラズリ 11.583ルース
Sold out タンザニア産タンザナイト 0.326ct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) 1.613ctルース【宝石図鑑掲載】
Sold out タンザニア産タンザナイト 7.726ct原石・ルース2石セット
Sold out タンザニア産タンザナイト 4.270ct原石・ルース2石セット
Sold out タンザナイト 0.655ctルース
Sold out ミャンマー産カラーチェンジジルコン 0.551ctルース
Sold out カラーチェンジジルコン 0.582ctルース
Sold out ミャンマー産カラーチェンジジルコン 0.898ctルース
Sold out Myanmar color change zircon 0.310ct loose stone
Sold out 【さくらシェイプ】カンボジア産ブルージルコン 6.3mm/1.473ctルース
Sold out Pt950 Cambodian blue zircon 0.31ct Brazilian Paraiba tourmaline ring
Sold out タンザニア産タンザナイト 0.800ctルース
Sold out タンザニア産タンザナイト 0.872ctルース
Sold out タンザナイト 1.295ctルース
coming soon [E_27 Yurakucho Marui take-out] Tanzanian bicolor tanzanite 0.812ct rough stone
Sold out タンザニア産バイカラータンザナイト 0.227ctルース
Sold out スリランカ産グリーンジルコン 0.994ctルース
Sold out ブラジル産パライバトルマリン・サンタマリアアクアマリン・アイスブルーダイヤモンド・タンザナイト13石ハーフエタニティリングセット(2.0mm)
Sold out タンザニア産バイカラータンザナイト 0.487ctルース
Sold out タンザナイト 1.216ctルース
Sold out Dreamy 13-stone gemstone set (amethyst, pink sapphire, tanzanite, rhodolite garnet) and half eternity ring set (2.0mm)
Sold out Summer color gemstone 13 stone set (Padparadscha color sapphire, hot pink spinel, tanzanite) and half eternity ring set (2.0mm)
Sold out 【スタッフセレクション】【KEN氏】カンボジア産ブルージルコン 0.953ctルース(セミオーダーメイドセット)

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.