Amethyst has been popular, and valuable, since ancient times. Its name derives from the Greek "amethystos", which means "not drunken" - it was once ... Read more

Diamond is named from the Greek "adamas" meaning unconquerable as it is the hardest natural substance on Earth. In fact, they are so hard that ... Read more

Emerald, the green variety of Beryl. Its green color, durability and rarity, make it one of the most expensive gemstones. Deep green is the most ... Read more

Opal is one of the most colorful gems - very fine examples can even be more valuable than Diamond. The iridescent color that appeares on ... Read more

Ruby is one of the most well known gemstones and is famous for its bright red color. It is also very hard and durable with a shiny lustre. ... Read more

Turquoise is an ancient gemstone, and has been found in relicts from several civilisations such as the Persian and Native American ... Read more

Quartz is fairly common and found in many places throughout the world, often in large crystals. Its color is usually soft, ... Read more

Sapphire is the most precious and valuable blue gemstone. It is a very desirable gemstone due to its excellent color, ... Read more

Alexandrites have two primary value drivers. First, the closer the colors to pure green and red, the higher the value. ... Read more