Color Types for Ruby
A brief description of the color types for Ruby used at AGL Thai Laboratory Gemology.
Ruby Pigeon blood
A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). The red color is caused mainly by the presence of the element chromium. Its name comes from ruber, Latin for red. The brightest and most valuable "red" called blood-red or "pigeon blood", commands a large premium over other rubies of similar quality.
Since red is the color of blood, it has historically been associated with sacrifice, danger and courage. Modern surveys in the United States and Europe show red is also the color most commonly associated with heat, activity, passion, sexuality, anger, love and joy. In China, India and many other Asian countries it is the color of symbolizing happiness and good fortune.
Natural ruby crystals from Winza, Tanzania
Emperor Pigeon Blood.
An emperor (through Old French empereor from Latin: 'imperator') is a monarch, usually the sovereign ruler of an empire or another type of imperial realm. It’s a special and brighter color for a more valuable pigeon blood ruby.
The pomegranate (pɒmᵻɡrænᵻt), botanical name Punica granatum, is a fruit-bearing deciduous shrub or small tree in the familyLythraceae that grows between 5 and 8 m (16 and 26 ft) tall.
The pomegranate originated in the region of modern-day Iran and has been cultivated since ancient times throughout the Mediterranean region and northern India. It’s special color is given for a purple to blood-red color ruby.