Ruby: Why Corundum Turns Red

Ruby is admired for its rich red color, ranging from bright raspberry and pinkish red to deep crimson. Transparent, faceted stones catch the light in lively flashes, while translucent rubies have a softer glow.

Wild Berry Earrings
Wild Berry Earrings with Ruby

Even a small ruby brings a beautiful touch of color to earrings and necklaces, making it equally appealing in delicate designs and more striking pieces.

What Is Ruby?

Ruby is the red variety of corundum, the same mineral that forms sapphire. Small amounts of chromium within its crystal structure create its distinctive color, with natural variations contributing to the different shades of red.

Myanmar is one of ruby’s best-known historical sources. The gemstone is also found in Mozambique, Sri Lanka, Madagascar, and other regions around the world.

Color and Natural Characteristics

Ruby’s color ranges from lighter, pinkish reds to deeper shades with subtle purple undertones. Its transparency, cut, and natural inclusions influence how light moves through the stone and how its color appears.

Some rubies are relatively clear, while others contain visible inclusions that give them a softer, more translucent appearance.

Ruby and pink sapphire belong to the same mineral family, and their colors blend gradually into one another. The distinction between the two depends on how the color is classified, with gemological conventions differing on where pink sapphire ends and ruby begins.

How to Care for Ruby Jewelry

Ruby measures 9 on the Mohs hardness scale, giving it excellent resistance to scratching. It is a durable choice for earrings and necklaces, although hard impacts can still chip an edge or damage a stone along an existing fracture.

Gently wipe ruby jewelry with a soft cloth after wearing. Untreated or heat-treated ruby can generally be cleaned with mild soap and lukewarm water when suitable for the rest of the piece, then rinsed carefully and dried thoroughly.

Meaning and History

Ruby has been treasured for centuries in royal jewelry, ceremonial objects, and personal adornments. Its rich red color has inspired associations with love, courage, and devotion across different cultures.

Its historical importance is reflected in the Sanskrit name ratnaraj, traditionally translated as “king of precious stones.” Myanmar was a source of ruby by at least the sixth century, and trade helped carry the gemstone far beyond its origins. Ruby later became highly sought after among European royalty, adding to its longstanding reputation as a gem of beauty and distinction.

As July’s birthstone, ruby makes a thoughtful birthday gift. It can also mark an anniversary, celebrate a meaningful relationship, or simply bring a favorite shade of red to an everyday piece.

Wild Berry Necklace
Wild Berry Necklace with Ruby

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