Nice brilliant reflection in this stone.   VS to Si quality. Pavilion offset around 1 mm. Not easy to see unless you're looking through the camera at 10X power zoom. This is the kind of reflective cut that gets me excited to see. You just don't get it every stone you see. This is the quality of spinel I'd be putting in a ring for myself. The few slight problems it has are not oblivious and even I don't see it until its zoomed in my face. The reflection in this stone is second to none and the color is to die for!
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.  I see a some calling dim burgundy red spinel Jedi which couldn't be further from the truth.  This is gorgeous looking spinel but it's not jedi it's very slightly orangey red.   Jedi has a pinkish red glow.  
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.