Nice brilliant reflection in this stone.   Great price for this size and color.   Very nicely cut and huge size especially for a round.  Love the color!   This one has a orangy veil line the lower pavilion.   It gives the stone the padparadscha color.   The stone is relatively clean and looks eye clean looking into the face of the stone although you can see the veil line when you turn the stone over.
This is from Luc Yen Vietnam.   This deposit is in the same marble deposit that occurs in Myanmar Burma.   Luc Yen is only around 750 kms from the Man Sin deposit where the Jedi spinel came from. 
Luc Yen stones do not get treated.   No heat on the Luc Yen spinel.   Spinel do not respond to treatments like sapphire.  So rest assured this stone is 100% natural and untreated.   
Mined from under the rice fields in the alluvial gravels in the shallow valley near the original marble deposit.  Rubies and sapphire are also associated with this deposit similar to the Burma deposit.  I'm was a geologist before I became a gem enthusiast/gemologist.   My business plan is to bring the better quality gemstones to my customers at a better more fair price.