This is a very nice reddish orange rectangular antique cushion tourmaline cabochon. Good saturation and a nice colour with great polish. The stone has some inclusions, but overall clarity is good.
Colour: Medium dark reddish orange
Saturation: Moderately strong
Shape: Rectangular antique cushion
Carat weight: 17.740
Country of Origin: Brazil
Treatment: Heat possible
Clarity: Moderately included