12x10mm Light Blue Aquamarine 5.40 Carats Natural Light Blue Gem Rectangle Cut Loose Faceted Gemstone Beryl 12x10.2mm

Tested on Refractometer: Beryl (Aquamarine)
Measurements: 11.9 x 10.25 mm, 5.0 mm deep
Weight: 5.40 carats
Condition: It has some light wear, mainly some slight scratches on the table. see pictures 4-6
Clarity: VVS
Shape: Rectangle Emerald
Color: Light greenish blue