Sinkankas Symposium Publications

2022 – Alexandrite and Other Color-Change Gemstones

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2022 – Alexandrite and Other Color-Change Gemstones

ISBN: 978-0-9915320-6-3

2021 – Agate and Chalcedony

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2021 – Agate and Chalcedony

ISBN: 978-0-9915320-5-6

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2019 – Pearl

ISBN: 978-0-9915320-4-9

2018 – Tanzanite and Tsavorite

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2018 – Tanzanite and Tsavorite

ISBN: 978-0-9915320-3-2

2017 – Sapphire

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2017 – Sapphire

ISBN: 978-0-9915320-2-5

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2015 – Opal

ISBN: 978-0-692-41688-4

2014 – Peridot & Uncommon Green Gem Minerals

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2014 – Peridot & Uncommon Green Gem Minerals

ISBN: 978-0-9915320-1-8

2013 – Ruby (rev. ed. 2014)

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2013 – Ruby (rev. ed. 2014)

ISBN: 978-0-9915320-0-1