unheated ruby

Heated ruby ​​(Hikanetsu ruby) refers to natural ruby ​​(red corundum) that has not undergone heat treatment. Ruby is generally formed under high pressure and temperature conditions underground during natural occurrence, but some natural rubies are mined without heat treatment.

Unheated rubies retain their natural color and clarity. Red is usually the most common, but rubies come in a variety of colors. Unheated rubies are sometimes highly valued in the gem market. This is because it is rarer than heat-treated rubies and is valued for its natural beauty and rarity.

Unheated rubies are sometimes treated as highly valuable gemstones in the gem market. Because of their rarity and beauty, unheated rubies can command a high price. Unheated rubies are also popular as collector's items.

Ultimately, a ruby's value is determined by its quality. Unheated rubies in their pristine state make them very attractive gemstones to some people.