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In this episode, Lucinda and Simon explore the fascinating world of gemmology instruments, focusing on colour filters like the Chelsea colour filter and pleochroism testing methods. Learn how these tools aid in gemstone identification and enhance gem cutting techniques.

Educational

key topics

Colour filters in gemmology

Chelsea colour filter purpose and use

Pleochroism and its significance in gemstone identification

Testing for pleochroism with London Dichroscope and calcite dichroscope

Importance of light source and gemstone orientation in testing

Natural vs synthetic gemstone identification techniques

key frameworks

Colour absorption principles

Pleochroism and optical anisotropy

Gemstone orientation and cutting strategies

Titles

Mastering Gemstone Identification: The Power of Colour Filters and Pleochroism Tests

Unlocking Gem Secrets: Chelsea Filter and Pleochroism in Gemmology

sound bites

"Record your observation by stating the colour scene."

"Always think about why you're looking at the stone."

"Share your pleochroic observations with others."

Chapters

00:00 Introduction to Colour Filters in Gemmology

01:55 Understanding Pleochroism and Selective Absorption

05:27 Testing for Pleochroism with the London Dichroscope

10:34 Comparing the London Dichroscope and Calcite Dichroscope

15:36 Documenting Pleochroism Observations

17:35 Understanding Gemstone Colours and Pleochroism

20:04 The Chelsea Colour Filter: A Gemstone Testing Tool

26:23 Practical Applications of the Chelsea Colour Filter

28:50 Identifying Gemstones: Colour Responses and Observations

resources

Gem-A - https://www.gem-a.com

Pleochroism in Gemstones (Book) - https://www.amazon.com/pleochroism-gemstones

Instagram - https://www.instagram.com/facetnationgemmology

Email - facetnation@facetnation.co.uk

gemmology, colour filters, Chelsea filter, pleochroism, gemstone identification, gem testing, gem cutting, gemmology tools

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This episode explores the fascinating world of jadeite, covering its geology, colours, treatments, cultural significance, and the latest gemological insights. Hosted by gemmologists Lucinda and Simon, it offers a deep dive into one of the most revered gemstones across cultures.

key topics

Jadeite vs Nephrite

Colours and Varieties of Jadeite

Treatments and Impostors in Jadeite

Cultural Significance of Jade in China and Central America

Geology and Formation of Jadeite

Titles

Jadeite Unveiled: 10 Facts Every Gemologist Should Know

The Hidden World of Jadeite: From Burma to Central America

sound bites

"Imperial Jade is the poster child for jadeite"

"Mining jadeite involves cutting into massive boulders"

"Testing includes SG, hardness, and visual clues"

Chapters

00:00 Introduction to Jadeite

02:54 The Complexity of Jadeite

05:43 Understanding Jadeite's Properties

08:39 The Formation and Sources of Jadeite

11:20 Cultural Significance and Jewellery of Jadeite

14:08 Impostors and Imitations of Jadeite

18:40 Testing and Identifying Jadeite

26:46 Exploring Literature and Its Influence

28:01 Understanding Specific Gravity in Gemmology

29:59 Testing Gem Hardness and Its Implications

31:30 Refractive Index: A Key to Gem Identification

33:28 The Complex World of Jade Treatments

39:14 Cultural Significance of Jade in China

51:31 Jade's Historical Importance in Central America

Resources

Gem-A (Gemological Association of Great Britain) - https://gem-a.com

Real Jade Co. - https://realjade.com

Instagram - https://instagram.com/facetnationgemmology

jadeite, gemmology, gemstones, jade, mineralogy, treatments, cultural significance, Guatemala jade, gem identification

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Join us as we explore the journey of jewellery designer Andrew Geoghegan, from childhood fascination with treasure to creating innovative collections inspired by history and nature. Discover insights on craftsmanship, branding, and staying authentic in a digital world.

key topics

Andy Geoghegan's early fascination with treasure and jewellery

The journey from university to professional jewellery design

The importance of authenticity and personal style in branding

Inspiration from history, nature, and personal experiences

Challenges and insights in modern jewellery marketing

guest name

Andrew Geoghegan

Titles

From Childhood Mischief to Jewellery Mastery: Andrew Geoghegan's Creative Journey

Unlocking the Secrets of Gem Setting and Jewellery Design

sound bites

"That moment sparked my love for jewellery"

"The use of colour in jewellery is about expression"

"Finding that relic was like discovering treasure"

Chapters

00:00 Introduction to Andrew Geoghegan

01:20 The Journey Begins: Early Memories of Jewellery

02:57 From Art College to Jewellery Design

09:10 Building the Brand: The Early Days

11:32 Navigating Challenges and Perseverance

16:22 The Digital Age: Marketing Jewellery Today

23:56 Design Inspirations and Client Connections

30:08 The Art of Craftsmanship in Jewellery

34:06 Innovative Use of Colour in Jewellery Design

36:59 Embracing Individuality in Gemstone Choices

37:21 Inspiration from Nature and History

42:33 The Thrill of Treasure Hunting

48:44 Launching the Treowth Collection

resources

Susannah King on Instagram - https://www.instagram.com/susannahkinglondon/

The Detectorists (TV Series) - https://www.netflix.com/title/80064446

Gemology Resources - https://www.gia.edu/

Jewelry Design Books - https://www.amazon.com/s?k=jewelry+design

guest links

Instagram - https://www.instagram.com/andrewgeoghegan/

https://andrewgeoghegan.com/

jewellery design, gemmology, jewellery collection, craftsmanship, branding, authenticity, goldsmithing, gemstone, jewellery inspiration, digital marketing

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