tl;dr I was underwhelmed, was expecting more. It was a very surface level book, lacking a lot of personal touch and historical context that I think could've added a lot of depth and purpose to the book. It was okay, still had interesting or useful information, but it's just not a book I'd go out of my way to recommend to anyone.
Not tl;dr:
For context, I am approaching this more from a secular perspective, and the contents of this book are spiritual in nature. However my review was not impacted by my differing beliefs.
The book covers quite a bit of information in working with crystals in general, but also techniques and advice for specific practices, like working with chakras, grids, zodiac, and meditation. There is quite a bit on color, with a list of crystals in the back that gives you a bit more info on what various individual crystals are good for. As well as information on charging and cleansing crystals. I liked that there were warnings included of how to best take care of your crystals, as sunlight, water, or other things could damage them.
I did appreciate that for the most part, this wasn't a "you have to buy everything" type of book. The author states several times that you can use any crystal you have, it's about the intentions you put into it. Or if you have clear quartz, for example, that that crystal can be a stand-in for any other.
I do wish it leaned more in the direction of not needing so much stuff though, as there was a lot of pressure to have a pendulum, with no real mention of how anything can be a pendulum and that you don't need to go out and buy one, as well as how certain rituals required specific shapes and amounts of crystals. I am trying to be respectful of those who practice pagan rituals (though this author seemed to lean towards wiccan practices, with the concern of magic coming back to affect you negatively if you misuse it; that isn't standard for all pagan religions), but the metaphysical/pagan communities do have a growing issue of consumerism. And I don't love promotion of that. Granted, this was rather light on 'necessities', so nevertheless, it was good enough there.
I do wish there had been some information about the history of crystals and their use. I think that could've helped the opening feel more natural and smooth, and get a feel for the various cultures and peoples that discovered and utilized these stones.
The visuals went along very well with the text, and I liked several things were labeled so it was easier to follow along with what was being discussed. I also liked the bit of variety, with discussing a Chinese historical use case of 'The Magic Square' with crystals. Again, I felt it lacking historical context that would've made me feel more connected to the culture that used this system.
For an author that speaks about how much crystals mean to them, and gives examples of how they use them, it was a little...weird to have the author never talk about their personal experiences of the results of using them. Just, "I use(d) them for this." ...and that's the end of the story. Did their life improve? Did things change? How did they change? Were they happy about this? Like what happened? It makes it feel a bit jarring to read, as each introduction of their use is just cut off with no conclusion.
Though it is clear that the author had a lot more information they wanted to include, but couldn't due to word count restraints, so perhaps that was a part of it. Still, some things could've been sacrificed to help make the stories more personal and relatable. It would've given more purpose to the whole book to read stories of how crystals have benefited people, rather than only just how you /could/ use them. I saw another review mention how much of the book is, "this crystal is good for x" without going into detail into the history of the magical properties.
Again, it just makes this book feel like it's lacking substance and depth. I know this "In Focus" series is supposed to be introductory, but I would imagine the historical context of these topics is related to beginners to those topics. So that was disappointing to me. I didn't see how this book really differed from reading various articles online about what crystals to use for what or how to use crystal grids.
There were a few mistakes in this book with stone pictures not matching with their names (like halite having the same image as moonstone, and moonstone's image being rainbow moonstone).
It was okay, I was hoping for more, honestly. I still encountered things I hadn't known or heard of before, but I can't find myself wanting to recommend this book to anyone passionate about crystals or wanting to learn about them.