In the spirit of full disclosure, I downloaded this book since it was written by a friend of a friend, and it was free as a Kindle download at the time.
3 stars for me, but 4 stars for those who regularly enjoy romance novels.
I liked this, and I think that others would also enjoy it, with the caveat that you should know, going into it, that it's very much a romance novel. It's reminiscent of a fantasy romance title that would be published by Luna. In short, it's a well-, if simply-, written fantasy romance that contains some cheesiness, overdramatic angst/star-crossed lovers (We can't be together because it'll literally be the end of the world...), and love scenes that you would expect in a romance novel, but it was fun and enjoyable like you'd expect a satisfying romantic comedy or K-drama to be.
Although, at first I got a little frustrated with how Asiah, the main character, who was supposed to be smart, independent and tough, kept swooning, and that the male lead, Chase, seemed to be a little bit irritatingly protective, these things didn't bother me so much later in the book, because the author doesn't take herself too seriously, and there are a couple of moments when the characters entertainingly poke jibes at themselves for exhibiting such stereotypical romance novel role behaviors.
Even though the book is short, I was surprised that the main characters and magic system were relatively well-developed. There's room for both to grow, but the main characters both have backstories and motivations, and act consistently according to these. The magic system/setting are a solid mash-up of aliens and magic. As an aside, I didn't like how the author kept trying to push that the magic is really using sped-up science and "more of the human brain" (::rolls eyes at this stupid humans-only-use-10%-of-their-brain myth::), but I liked that the author tried to make the magic not as fantastical, and that, with this explaination, it was fitting that Asiah would be drawn to, and excel at the sciences before before finding out that she is a Shade.
Overall, Sapphire Shade is a fun, quick read that promises more fun fantasy romance, and a solid first novel attempt for the genre. The next novel takes place in the early 2000s, and Asiah is working for the CIA. Due to the setup of the magic system, this is feasible, and I was interested enough to pick up the next book for $.99, and I'd be interested to know if there's a third book that takes place in farther in the future.
P.S. It's kind of annoying that every man, without fail, falls for Asiah, but at least it's because she's smart and determined as well as having knock-out good looks, and it's explained by the fact that, of course she's irresistible, she's part alien fairy. I find this preferable to the main character being mousey, of average intelligence, and quite bland, as many romance novel heroines are to allow for self-insertion fantasies.