Ruby

An unheated ruby is a natural marvel, a vibrant testament to the Earth's geological artistry, untouched and unaltered by artificial enhancements. Unlike their heat-treated counterparts, these gems retain the pure, unadulterated characteristics bestowed upon them during their formation deep within the Earth's crust.   

The color of an unheated ruby is often described as intensely saturated, ranging from fiery reds with orange or pink undertones to the coveted pigeon's blood red – a deep, vivid crimson with a hint of blue fluorescence. These colors are entirely natural, a result of the presence of chromium within the corundum crystal lattice. The distribution of color within an unheated ruby can be somewhat uneven, exhibiting natural zoning or variations in intensity, which many connoisseurs appreciate as a hallmark of its authenticity.   

Clarity in an unheated ruby can vary significantly. Due to the natural processes of crystal growth, they often contain inclusions – tiny mineral crystals, feathers, or silk-like structures within the stone. These inclusions are not necessarily flaws but rather a unique fingerprint, providing evidence of the ruby's natural origin and often helping gemologists identify the source. While heavily included stones are less desirable, some subtle inclusions can add character and beauty, and are tolerated more readily in unheated stones compared to those that have undergone clarity enhancement.   

The luster of an unheated ruby is often described as a soft, velvety glow, distinct from the sometimes glassier appearance of heat-treated stones. This natural brilliance arises from the way light interacts with the untreated crystal structure.

Due to their rarity and the absence of artificial enhancement, unheated rubies, particularly those with exceptional color and clarity, command a significant premium in the gemstone market. They are highly sought after by collectors and those who appreciate the pure beauty and authenticity of a gemstone formed entirely by nature's hand. Owning an unheated ruby is possessing a piece of geological history, a vibrant treasure untouched by human intervention.