0.77ct Dark Blue Sapphire Oval Cut Lawson Collaboration It is unheated and was

It is unheated and was responsibly sourced from the mines in Nigeria

7m Colour Blue Clarity VS/SI Treatment None Origin Mozambique

This rough tourmaline is a lovely mix of very dark blues to greens (occasionally a brown or olive pops up) and is in sizes perfect for setting in jewellery as is or great practice material for gem cutters

Queensland

Stone Type Opal - Volcanic Cut Oval Cabochon Cut Weight 4

0.77ct Dark Blue Sapphire Oval Cut Lawson Collaboration It is unheated and wasStone Type Sapphire Cut Oval Cut Weight 0. 77ct Dimensions 6. 20x4. 30x3. 10mm Colour Blue Clarity VS Treatment Possible heat treatment Origin Australia, Responsible sourcing Reference LG400188