Long story short.. I was left a sapphire and diamond ring, I think the diamonds are original but family have a feeling a certain family member has swapped out the sapphire. I’ve cleaned it as best as I can and am able to shine a light from underneath which makes the gem shine green/blueish and appear murky. From above with no light the gem is very dark/almost black
wondering if anyone on here would be able to identify if this is fake or the original? There seems to have been some lighter blue stripes appear where I’ve maybe scraped the dirt from underneath (in first image) a little harder?