scoring a ten on a one to ten hardness scale

This great specimen is in very good condition and would be a beautiful addition to any new or existing collection

4 Grams /  9

which matches both in size and shape

Star Sapphire | Marquise Cabochon | Royal Blue | 10x5.5mm | SO24 Amphibole scoring a ten on aProduct Type: Star Sapphire Approx Weight (per piece): 2. 1ct Size: 10x5. 5mm Shape: Marquise Cabochon Color: Royal Blue Clarity: Opaque Sharp 6 Rays Star Origin: Thailand Treatment: Diffusion* *This gemstone was heated and surface diffused to improve its appearance. This is a routine and safe treatment that is accepted worldwide.