6.40 ct large very beautiful oval natural rainbow quartz gemstone

Product No: 2110mqu0004
Stone Type: Natural Quartz
Shape: Oval
Total weight: 6.40 carats
Size (mm): 14.1x10.2x6.3mm
Color: Rainbow
Clarity: VVS1
Luster: Very Good
Hardness: 7
Treatment: Heat/Diffusion
Origin: Brazil