Medallion Necklace with Malachite

I bought this chain for my boyfriend and I’s 3rd year anniversary. I was super excited about the necklace. The details are beautiful and the chain is very well made- however the color of the stone is completely different from the image in the website. I ordered the malachite medallion and online it appears to be an aqua blue color but in person it is a very dark green. If I would’ve known it was going to be so dark I would’ve gotten a different stone. I am still very happy with my purchase, I just wish the color online was more representative of what the medallion actually looks like.