Författarbild

Cally Hall

Författare till Gemstones

20 verk 735 medlemmar 3 recensioner

Om författaren

Cally Hall is a fellow of the Gemological Association and Gem Testing Laboratory of Great Britain. She has contributed to several books on gemmology, mineralogy, geology, and earth science. A member of the curatorial team at London's Natural History Museum, she spends her days identifying minerals visa mer and gemstones and lecturing. She specializes in the study of colored gemstones visa färre

Inkluderar namnen: Cally Hall, Cally Oldershaw

Verk av Cally Hall

Taggad

Allmänna fakta

Namn enligt folkbokföringen
Hall, Caroline
Födelsedag
20th Century
Kön
female

Medlemmar

Recensioner

This book is a good resource for a classroom discussion about oceans. It talks about the different shapes of different oceans, what kinds of things live in the ocean, the type of water and rocks that can be found in the ocean, food that we get from the sea, transportation across the oceans, and how the ocean is polluted. This book is very dense in its content and goes very in depth about different aspects of the ocean. This would be a good resource for grades 4-6.
 
Flaggad
cbrunner16 | Nov 5, 2019 |
This book stretches the term "gems" to include pearls carved shells, and various other carvings, even metal artwork. That takes it out of the gem reference world and puts it on the coffee table pile of interesting reads instead of reference books. I was going to check if it covered ivory too but the index font is too small to use, even with reading glasses that I'm wearing. Descriptions of the rocks gemstones come from is average. Color photos of gems from the rocks are mostly inaccurate in both the intended color and in the color varieties most often encountered. A good example of inaccurate color is the emerald brooch on page 123. The color shown is that of Peridot or Olivine, not the emerald color the brooch must have had, unless the brooch has been misidentified. Page 42 has a good comparison of emerald and Peridot color. Many non-reference books come off the press with poor color quality control. The more common inaccuracies are the shades of green, being too bluish or too yellowish, or else the blues and purples looking interchangeable.

Text within the book is pretty good and seems pretty accurate.
… (mer)
 
Flaggad
billsearth | Jun 30, 2014 |
I like the way this is laid out, a basic introduction to the subject, I would use this as a quick reference. It has a variety of stones and metals in both their unfinished and finished state.
 
Flaggad
wyvernfriend | Jan 24, 2008 |

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Statistik

Verk
20
Medlemmar
735
Popularitet
#34,566
Betyg
4.0
Recensioner
3
ISBN
69
Språk
8

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