スピネルはとても望ましいものにする要因について学んで下さい。

Found in nearly every color – most notably red, pink and blue – spinels are popular gemstones because of their abundance, moderate cost and attractiveness.

The spinel used in jewelry is a small part of a group of minerals that share the same crystal structure. Not all of them form transparent crystals suitable for jewelry use, however. Spinel offers a range of hues, from orange to intense “stoplight” red, vibrant pink, and all shades of purple, blue, and violet through bluish green.

Spinel is a good candidate for the title of “History’s Most Underappreciated Gem.” Some ancient mines that supplied gems for royal courts from Rome to China produced spinel, but it was usually confused with better-known stones like ruby and sapphire.

The Black Prince’s Ruby. The Timur Ruby. For centuries, spinel, the great imposter, masqueraded as ruby in Europe’s crown jewels

Learn about spinel's durability and how to care for your spinel jewelry.

GIA researchers report on a new nickel-diffusion treatment used to modify color in spinel and present criteria for identification.

GIAのフィールドジェモロジストとともに行く、ベトナムのエキゾチックなスカイブルースピネル探しにご参加ください。

インクルージョンの分析、UV-Vis-NIR、エネルギー分散型蛍光X線組成分析法（EDXRF）およびレーザーアブレーション誘導結合プラズマ質量分析装置（LA-ICP-MS）を用いた、天然スピネルの新しいコバルト拡散処理に関するレポート。

A gemological tour of Sri Lanka’s gemstones.