In this episode of Facet Nation, Lucinda Beeman and Simon Barber delve into the world of gemmology, focusing on the essential skill of observation. They share their personal experiences with gemmology exams, discuss the practical techniques for examining gemstones, and explore the significance of colour, lustre, transparency, and cut in determining a gem's value. The conversation also highlights the importance of inclusions and optical effects in identifying and appreciating gemstones, providing listeners with a comprehensive understanding of the gemmological process.

Takeaways

Observation is a key skill for gemmologists.

Colour is a major factor in gemstone valuation.

Lustre affects the visual appeal of gemstones.

Transparency can indicate the quality of a stone.

The shape and cut of a gemstone influence its beauty and value.

Inclusions can tell a story about a gemstone's origin.

Optical effects like Chatoyancy and Adularescence enhance a gem's allure.

Using a loupe and proper lighting is essential for gem testing.

Understanding diagnostic inclusions aids in gemstone identification.

Gemmology combines science with artistry in evaluating stones.

Titles

The Art of Observation in Gemmology

Unlocking the Secrets of Gemstones

Sound bites

"We are going to be talking all about observation today."

"I had a cry too, I was on the corner of Black Horse Road."

"Transparency is basically the question, can you see through it?"

Chapters

00:00 Introduction and Exam Results

02:56 The Practical Gemmologist: Using a Loupe

06:01 Light Techniques in Gem Testing

08:21 Understanding Transmitted Light

11:02 The Importance of Colour in Gemmology

15:55 Exploring Lustre in Gemstones

21:01 Exploring Gemstone Lusters

24:21 Understanding Transparency in Gemstones

26:50 The Art of Cutting and Shaping Gemstones

38:26 Diving into Inclusions and Internal Features

42:33 Diagnostic Inclusions in Gemstones

49:02 The Importance of Non-Diagnostic Inclusions

49:03 Optical Effects and Their Significance

57:24 Future Topics and Closing Thoughts

gemmology, gemstones, observation, lustre, inclusions, gem testing, color, transparency, shape, cut