Loupe clean freshly faceted spinel just back from the certification lab.  Freshly cut natural stone.  No heat certified.   Mined in the river gravels of Sri Lanka where the rough is especially clean and free from inclusions because of being river worn.  These stones have been properly cut for a proper gem quality stone.  See the photos for yourself and compare. 

Sri Lankan spinel gemstone.  I try to price my stones below other sellers and try to make sure all customers are getting a true gemstone at a bargain price.  

Spinel is rarely treated or heated as it naturally comes without many inclusions and heating does nothing to increase the beauty of the stones.  
Spinel is rapidly becoming more popular.  I’ve heard many gem affectionados state it was their favourite gemstone.  It was once thought to be sapphire or ruby depending upon the color.   The imperial crown housed in the tower of London has a large red spinel which was once thought to be a red ruby.  It is named the Black Prince’s Ruby and has a recorded history dating back to 1366 AD.