Why am I passionate about this?

As a geologist and gemmologist, I am particularly fascinated with how the Earth works and landscapes change; how mountains, valleys, rivers, and seas are made; where and why volcanoes and earthquakes occur; and about crystals and gemstones for jewelry. My mother reminds me that since I was a toddler, I have loved to collect small pebbles and "sparkly things." I am passionate about teaching and writing for adults and children and lecture in universities and on cruise ships worldwide. Formerly the curator of more than 5,000 gemstones at the Natural History Museum, I am an examiner for the Gem-A, internationally recognised by jewelers worldwide.


I wrote

Stones: A Material and Cultural History

By Cally Oldershaw,

Book cover of Stones: A Material and Cultural History

What is my book about?

This fascinating and often surprising compendium of stone facts, myths, and stories reveals the impact and importance of stones in…

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The books I picked & why

Book cover of The Pebbles on the Beach

Cally Oldershaw Why did I love this book?

My copy (published in 1954) is a childhood gift that I have treasured for more than 50 years. Flicking through the well-thumbed and weather beaten pages brings back so many wonderful memories of holidays and collecting trips.

As an avid collector of pebbles from an early age, this was the book that fuelled my interest in geology. Amazed to find that no two pebbles were the same or had the same story, I was fascinated by their diversity and beauty, what they were made of, and how they were formed.

When the book was re-issued in 2018, I couldn’t resist buying another copy. I read it from cover to cover with as much excitement as I had as a child and was reminded that this was the book that inspired me to become a professional geologist.

By Clarence Ellis,

Why should I read it?

1 author picked The Pebbles on the Beach as one of their favorite books, and they share why you should read it.

What is this book about?

*Top 10 Sunday Times bestseller*

The Pebbles on the Beach was first published in 1954. This newly reissued edition includes a foreword by Robert Macfarlane. There is a handy illustrated guide to identifying pebbles on the reverse of the book jacket.

Pebble-hunting is a pleasant hobby that makes little demand upon one's patience and still less upon one's physical energy. (You may even enjoy the hunt from the luxurious sloth of a deck chair). One of the true delights of the pebble-seeker is to read the stories in the stones - to determine whence and by what means they came…


Book cover of "Formed Stones", Folklore and Fossils

Cally Oldershaw Why did I love this book?

I met the author, Professor Mike Bassett, at the National Museum and Galleries of Wales on a visit from the Natural History Museum in London where I was the Curator of Gemstones. After an amazing walk around the museum and its collections, I finished my tour back in his office, where he gave me a signed copy of this slim book. I loved the photo of the front cover, of a coiled ammonite fossil with a fake snake head.

What particularly caught my interest was the fact that the book not only gave the scientific facts about the fossils but also introduced the more aesthetic, medicinal, and metaphysical aspects. I loved reading about the myths and legends and the entertaining nicknames such as Devil’s toenail for Gryphaea, a fossil oyster.

Book cover of Buried Treasure: Travels Through the Jewel Box

Cally Oldershaw Why did I love this book?

This is the book that I wish I had written. So many times I have thought about going on the travels that Victoria followed, but life got in the way, and I never made the all the journeys. Reading the book and following Victoria’s quest, even as an "armchair traveller," really brought the stories of the gemstones alive and answered questions that I had about the people, the places, and the politics of gemstones and the jewellery trade.

I loved that she started out with a simple idea, to find out more about her engagement ring, and then how much more she became interested in along the way and how her travels impacted her knowledge of gemstones and her outlook on life.

By Victoria Finlay,

Why should I read it?

1 author picked Buried Treasure as one of their favorite books, and they share why you should read it.

What is this book about?

Amber is the tears of prehistoric trees. Peridot falls to earth from space.You can grow opals in your back garden.One gem links Queen Victoria and a transvestite skeleton.Cleopatra drank a pearl to win a bet.A man has turned into a diamond.From the bestselling author of COLOUR - an intrepid journey to uncover the secret histories of precious stones.Victoria's search takes her to Egypt to find the lost emerald mines of Cleopatra, to the Australian opal fields with their underground towns, to Burma where she is spied on by the military junta, and to a secret location to meet the world's…


Book cover of The Nature of Diamonds

Cally Oldershaw Why did I love this book?

I am in awe of the sheer breadth of knowledge in this book about diamonds. I am amazed that diamond has such simple chemistry, made by bonding carbon atoms, yet forms the hardest natural substance known. Scientific experts, including geologists, gemmologists, and physicists, tell the story of its formation, exploration, mining, and economic value, but I found that there is so much more in this book of interest than just the science.

What I particularly liked was reading about the cultural nature of diamonds and what makes diamond so special to so many people worldwide from artisanal miners scraping a living out of the ground, to monarchs and millionaires who adorn themselves with diamond jewellery.

The new technologies of making diamonds in the laboratory left me wondering what that might mean for the future of diamond mining and sales.

By George E. Harlow (editor),

Why should I read it?

1 author picked The Nature of Diamonds as one of their favorite books, and they share why you should read it.

What is this book about?

The paragon of physical perfection and a sparkling example of Earth's forces at work, the diamond has fascinated all realms of society, from Russian tsars and Hollywood stars to scientists and brides-to-be. The Nature of Diamonds is an authoritative and richly illustrated look at nature's most coveted gem. Leading geologists, gemologists, physicists, and cultural observers cover every facet of the stone, from its formation in the depths of the Earth and its explosive ascent to the surface, to its economic, regal, social, and technological roles. The book takes the reader to cutting-edge research on the frontiers of diamond exploration and…


Book cover of The Opal Seekers

Cally Oldershaw Why did I love this book?

I find it difficult to walk past second-hand bookshops and charity shops and often find myself drawn to the antique books and children’s adventure books from the 19th and 20th century. The older, the better, and if they are about stones, pebbles, or gemstones, whether fact or fiction, I find them hard to resist. One of my recent finds, this book was published in 1960 and is an adventure story. It is part of The Boys’ and Girls’ Library—School and adventure stories by well-known authors.

I love the excitement and adventure that the boys get up to and their well-meaning antics, which usually land them in some dire situation that they either have to escape from or be rescued from. And there’s plenty for me to learn about the life of the opal miners and the geology.

By Ray Harris,

Why should I read it?

1 author picked The Opal Seekers as one of their favorite books, and they share why you should read it.


Explore my book 😀

Stones: A Material and Cultural History

By Cally Oldershaw,

Book cover of Stones: A Material and Cultural History

What is my book about?

This fascinating and often surprising compendium of stone facts, myths, and stories reveals the impact and importance of stones in our history and culture from the Stone Age to the present day. From small beach pebbles to huge megaliths, stones have been collected, revered, enhanced, sculpted, or engraved for practical and artistic purposes throughout the ages. They have been used to delineate boundaries, build homes, and utilized for cooking, games and competitions. 

This book introduces the science of stones in an accessible way and covers aesthetic appeal, diversity and beauty, practical uses, and metaphysical properties. Stones are far too wide a topic to comprehensively cover in a single volume, but with a few well-chosen examples, the reader gets a taster, which will whet the appetite and encourage further reading.

Book cover of The Pebbles on the Beach
Book cover of "Formed Stones", Folklore and Fossils
Book cover of Buried Treasure: Travels Through the Jewel Box

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Elephant Safari

By Peter Riva,

Book cover of Elephant Safari

Peter Riva Author Of Kidnapped on Safari

New book alert!

Why am I passionate about this?

I have been to, and loved, North, Central, and especially East Africa for over fifty years. Only six times have I been to Africa on holiday; more often, perhaps twenty or more times, as a television producer. Working in Africa gains a perspective of reality that the glories of vacation do not. Each has its place, each its pitfalls like stalled plane rides with emergency landings in the bush or attacks by wildlife. But, in the end, the magic of the “otherness,” what an old friend called “primitava” captures one’s soul and changes your life.

Peter's book list on the otherness that few get to experience

What is my book about?

Keen to rekindle their love of East African wildlife adventures after years of filming, extreme dangers, and rescues, producer Pero Baltazar, safari guide Mbuno Waliangulu, and Nancy Breiton, camerawoman, undertake a filming walking adventure north of Lake Rudolf, crossing from Kenya into Ethiopia along the Omo River, following a herd of elephant making their annual migration.

Stumbling onto an elephant poaching, the team become embroiled in true financing of terrorism for al Shabaab –ivory sales–and are determined to stop the slaughter at any cost. Ivory trade financing terrorism involves UN refugee camps with two hundred thousand displaced Somali persons, powerful…

Elephant Safari

By Peter Riva,

What is this book about?

A documentary team hiking through East Africa collides with a gang of deadly poachers, in this gripping adventure by the author of Kidnapped on Safari.

Years of filming, extreme dangers, and daring rescues have taken their toll on documentary producer Pero Baltazar and his team. To relax and reconnect with the East African wildlife they love, Pero organizes a walking safari for him, his camerawoman Nancy Breiton, and their elite guide Mbuno Waliangulu. Still, Pero has trouble truly disconnecting from work. When the team comes across a herd of elephants making their annual migration north of Lake Rudolf, Pero decides…


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