Hi, it is not possible to give a value on this gemstone as you would need to put a light under the gem and take some photo’s then put these on the forum. Cannot tell from this photo if the stone is clean or has inclusions flaws etc.
there is a massive difference in price from a clean gem to one that is completely flawed or cannot be facete because of quality
Have you tested the gem to know it is in fact spinel.
where did it orginate from is it Burmese????
all these things have to be considered for price even with an uncut gem