This sapphire is blue in color and weighs approximately 6 carats. The stone is slightly longer than 1 cm, just over 9 millimeters wide, and 6.15 millimeters deep.
This gemstone shows small inclusions and very good color quality.
The transparent sapphire was cut into a faceted antique oval, with a modified brilliant-cut top and six facet crowns below.
What makes this 6-carat sapphire unique is its color.
The color has been classified by Lotus Gemology as "Velvet Blue." This gemstone institute has its own color classifications for rubies and sapphires. "Velvet Blue" is one of these color types according to Lotus. Velvet Blue is that dreamy, silky blue that is typically only seen in Kashmir sapphires.
This sapphire comes from Sri Lanka.
The certificate mentions signs of a thermal treatment, indicating that the stone has undergone heat treatment. Such treatment is very common and standard practice for sapphires. Heating, also known as "burning," is a specialized science. The "recipes" used by the burners are kept strictly confidential. Heating is intended to permanently enhance both the color and the clarity of a stone.
Additional information
The appraisal for this blue sapphire was determined by the Gemological Laboratory Austria (GLA) at €32,000. An expert report for this stone was also issued by Lotus Gemology. Lotus Gemology is based in Bangkok, the metropolis for colored gemstone trade. The laboratory is led by Richard Hughes, one of the most recognized specialists in corundum and author of the classic "Ruby & Sapphire." Lotus Gemology has classified this stone as "Velvet Blue."
