Gemstone Encyclopedia

Ruby: The Fiery King of Gemstones, Its History, Legends, and Investment Power

Ruby is a symbol of passion, power, and luxury. In this article, we explore its fascinating history, famous legends, and why it is a great investment.

Blue Sapphire Guide: Origins, Treatments, Value & Records

When the Blue Belle of Asia sold for 17.3 million dollars, the price was justified line by line on a single laboratory report. This guide reads blue sapphire the way the market does: five certifica...

Cabochon Sapphire Information

The prices, uses and value of cabochon sapphire can differ greatly, depending on the size and quality of the  individual gemstone.

Black Star Sapphire Information

Star Sapphire is a type of  sapphire that exhibits a star-like phenomenon known as asterism. Star sapphires contain intersecting needle-like inclusions that cause the appearance of a six-rayed'star...

Green and Blue-Green Sapphire Information

The green or blue-green hue comes from the presence of iron (FE) in the crystal. Because of the presence of the iron, the green or blue-green sapphire  has a higher density than most other sapphire...

Blue Star Sapphire Information

Some rare natural sapphires exhibit a star-like phenomenon known as asterism. These gems contain intersecting needle-like inclusions that cause the appearance of a six-rayed star when viewed with a...

Fancy and Color Change Sapphire Information

Color Change Sapphire gems are typically blue in outdoor light and purple under (incandescent) indoor light. The color change in Color Change Sapphire may also be pink in daylight to greenish under...

Padparadscha Sapphire Information

The rarest and most valuable fancy color sapphires are the exquisite orangy-pink or pinkish-orange gems referred to as "Padparadscha" after the Sinhalese word for lotus blossom.

Yellow Sapphire Information

Yellow Sapphire has become a favorite in jewelry because it is available in so many color nuances, ranging from a light lemon yellow  to a fully saturated vivid yellow to a deep orangey-yellow.

Pink Sapphire Information

Pink Sapphire has become a favorite in jewelry, especially engagement rings, because it is available in so many shades, ranging from light pink to hot pink and purplish pink. Pink is actually one o...