Freshly faceted spinel just back from the certification lab.  Freshly cut natural stone.  No treatments.   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.  This stone has top cutting so is fully reflective and very bright when you look straight down into the stone as it should be.   When stones go dark looking directly down into the face this would be extinction cutting and you should steer clear of that.  This stone is very slightly included through the loupe. 
Standard air at $10 to the USA and Canada only. Standard shipping to EU $25. Mid East $50 for Standard tracked shipping. For combined shipping on multiple purchases please contact. Insurance only available through upgraded shipping up to $500 most countries. Upgraded shipping to the USA and Canada is $25. $50 to the EU and $100 to Qatar, Saudi Arabia, Oman, etc. Thanks.
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.  
There is an article on this site about blue spinel titled “The rarest of them all”.  It is located in the learn section under Additional Gemstone Information.  
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.
Cobalt is the main colorant in blue spinels and are especially rare.  For me I prefer them over sapphires.  The better price, less inclusions and lower cost make it the better value.  It is also a hardness of 8 which is only slightly under sapphire so is good for everyday wearing.