Pretty parcel of mixed colors in very gemmy looking stones with high luster. 10 stones 29.80 cts.  That is 2.98 cts average size. $40/ct is a great price for all these 10 stones. Just keep looking at the video.  The photo was taken on a cloudy day outside in case there might be some color changes to note. In the case there are lots of particles coming off the foam which unfortunately showed un in the photo.  I’ll grab another shot later and post it.  Even faster if you ask me in a message.

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.