Books in the Obsidian Heart series in order

Jade is putting Obsidian through hell, as expected. After a few conversations with her attorney, he realizes it's in his best interest to give in to her demands. Amber convinces Obsidian to visit Jade one last time to get closure and when he finds Jade in his house, the passion they once had between them is re-ignited, only for the flames to be put out once she reveals she's pregnant. Not only does Obsidian have to tell Amber his wife is pregnant, he also has to tell Amber he slept with his wife again. Will this be the end of their relationship or will their relationship survive?

Obsidian has always been able to keep his legacy intact and maintain his collection of crystals, gemstones, & spheres, which have been passed down through three generations - but when he meets Amber, his wife Jade realizes that Amber is a threat to their marriage that must be eliminated and things take a psychotic turn for the worse. Will Obsidian be reunited with his Queen in this life - or will Jade succeed in eliminating Amber again as she has in a past life?