This is a incredibly rare find for a Montana sapphire parti colors are more traditionally associated with Australian sapphires. So to say this is a one of a kind Montana sapphire is a understatement. The color is absolutely breathtaking with insane amounts of nuances. Parti sapphires are unique in the fact that they have multiple colors displaying at all times. The pear shape on this beautiful montana sapphire is such a excellent cut it really highlights the colors and brings everything together. This stone has been heat treated and is vs clarity. The dimensions are 9.4x6.1mm this stone is exquisite act fast on this one.