SKU: 68978208132

The Firefly Guide to Minerals, Rocks and Gems

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Description

The Firefly Guide to Minerals, Rocks and GemsStep by step Questions and Answers with detailed color photographs for easy identification. The Firefly Guide to Minerals, Rocks and Gems is designed for easy and reliable identification of minerals, gems and rocks. The identification process begins with the stone's streak color, which is how the book is organized: Blue, Red, Yellow, Brown, Green Black and White. Using a sequence of straightforward questions and answers aided by over 1,000 photographs

Step-by-step Questions and Answers with detailed color photographs for easy identification.

The Firefly Guide to Minerals, Rocks and Gems is designed for easy and reliable identification of minerals, gems and rocks. The identification process begins with the stone's streak color, which is how the book is organized: Blue, Red, Yellow, Brown, Green Black and White. Using a sequence of straightforward questions and answers -- aided by over 1,000 photographs and drawings -- the book narrows down the possibilities among 350 minerals, gems and rocks to reach the conclusive classification.

Identification is then further narrowed down with respect to Crystal form, Hardness, Luster, Density, Cleavage, Break and Tenacity. Each rock's main photograph shows the general or typical view, and identification tips about features are noted in the margins of the respective page.

Similar stones are presented for comparison and tips are provided that can eliminate imposters. Drawings show the mineral's crystal shape. The chemical formula reveals the elements from which the mineral is composed. There is also information about where the stone is typically found and some of the ways that humans have utilized it.

Packed with beautiful photographs of earth's many rocks, minerals and gems, The Firefly Guide to Minerals, Rocks and Gems is perfect for amateur mineralogists and collectors.



Binding Type: Paperback
Publisher: Firefly Books
Published: 09/27/2019
ISBN: 9780228102281
Pages: 256
Weight: 0.90lbs
Size: 7.60h x 4.50w x 0.90d

Review Citations: Library Journal 11/01/2019 pg. 108
Booklist 02/01/2020 pg. 10
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SKU: 68978208132

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darryl jones
Dallas, US
★★★★★ 5
Easy
Size: 6Ft-without USB, Size: 6Ft-without USB
I like it more room
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2026
A
Verified Purchase
Atlas
Omaha, US
★★★★★ 5
Great! This surge protector is well designed and built for specific needs.
Nice surge protector/power strip. Good layout of outlets and the one spaced apart is really good. I also love the fact it comes with not two or three USB outlets, but four of them! This is great because there is plenty of room to plug in other devices. The tiny led lights are very small but do light up enough to see that the device is on. The on/off switch works great too and was a must have for my setup. 5 ft of cord length is just what I needed to mount the strip on the wall. (Install screws included) The flat angled plug for the wall is also just what I needed so the design here is perfect. A great value!
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Reviewed in the United States on September 16, 2025
J
Verified Purchase
J. Rew
Houston, US
★★★★★ 5
All The Right Features, and Well-Made
This power strip had everything I was looking for: 6 ft. cord, right-angle plug, at least 2 USB ports, white plastic case, wall-mountable, and at least 4 AC power outlets. All of that might sound pretty straightforward, but this TROND power strip is one of the very few models that meets all the criteria. Here's what I like about power strips in general, and this TROND model specifically: 1. Right-angle plug. A must in my book. Get a right-angle plug whenever possible. They are almost always more convenient and better-looking than straight standard plugs. 2. At least 1 transformer-spaced outlet. If the AC outlets are all too close together, you'll end up sacrificing 1 or 2 of them with a "wall wart" transformer. Just about everybody is plugging in at least one of these outlet-hogging transformers these days. 3. USB power ports. Like transformers, just about everybody has USB-powered stuff to plug in. If you don't have USB ports built into the power strip, then you have to use the USB power adapter which hogs up an AC outlet. I've got at least 2 USB devices to plug into this power strip at any given time, so having the built-in ports is very convenient. Another must in my book. I also like this TROND model for the little touches that make it a bigger value than the price suggests: 1. Includes mounting screws. What? Wasn't expecting that. Very cool. 2. Includes a template for drilling the mounting holes. What? I've never even seen that before. Even cooler. 3. An actual user's manual - in English - and well-written. That blew me away. I totally don't need a user's manual for a power strip, but it was very classy to see it in the box. Well played, TROND. 4. Expensive-looking power switch and power light. This power strip is much better looking than other cheap strips. The plastic is high-quality and "Apple" looking, the power switch is a cut above the generic switches in this price range, and the power indicator light a slick hidden LED that makes the whole package feel high-end. I have expensive power strips from Monster, Belkin, and Tripp-Lite, and this TROND unit appears better made and has fancier features. I'll definitely buy another TROND power strip when the time comes.
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Reviewed in the United States on December 5, 2016
E
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E. Jackson
Birmingham, US
★★★★★ 5
Perfect when you need length.
Color: Black, Size: 15FT Flat Plug
Works great, the ports are perfect, so no more cubes.
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Reviewed in the United States on May 5, 2026
R
Verified Purchase
Rick A
Birmingham, US
★★★★★ 4
Nice strip, wish it had a power on indicator
Color: Black, Size: 6FT Flat Plug
My first strip was DOA, and seemed to have been returned to Amazon. I say this because I was given a replacement and the packaging was different. First it was shrink wrapped, the first device I received was not. Second, the internal packaging was different. I scrapped my original review, and this review is based upon the working strip. This is an attractive power strip with 4 USB charger ports. I like the wall mount holes on both ends that provide a more secure means of attaching the strip to something. Most chargers simply have holes on the back to hang over a screw, this one you can actually fasten to something. The position of the outlets is good for clunky older power blocks provided they aren't too wide. They don't come close to interfering with the usb ports, ensuring you can easily plug in 4 usb cords and 4 power cords without having them get tangled up. My chief dislike are the lack of any power indicator. Almost every power strip I have owned in the last 30 years had some visible way to tell the strip was turned on. The other thing is the indicator to show which side of the power switch is on. The off side has a very visible white dot, which would probably make most people believe that was the "ON" position, it is actually the off position. The on position is marked by a raised black bar(or perhaps it is a 1) which is difficult to see. I think I would have just painted the traditional "on" icon next to the power on end of the switch. Again, a power indicator here would have made all the difference.
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Reviewed in the United States on March 14, 2018

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