Spectroscopy helped the team identify specific elements inside the gems and their chemical makeup and structure.
Gemstones American Scientist
Gemstones' structure can tell their origin story
Geologists Unravel the Mysteries of Australia's Rare Pink Diamonds, Smart News
The Project Gutenberg eBook of The Curious Lore of Precious Stones, by George Frederick Kunz.
What's behind our obsession with gems?
The Ultimate Guide for the 4 December Birthstones
Gem Formation: How are Gemstones Created? - Gem Society
The Gem Quarter: Sunset magic – orange & yellow gemstones - Jeweller Magazine: Jewellery News and Trends
What are Gem Species and Gem Varieties? - International Gem Society