Gemstone Knowledge
SOOKJAI KNOWLEDGE
Gemstone Knowledge
A considered guide to gemstones — from colour and cut to origin, treatment and the stories behind each stone.
Zircon · From Rough to Cut
Zircon: One of Earth’s Oldest Gemstones
Some zircon crystals preserve a record reaching back about 4.4 billion years, making this gemstone mineral an extraordinary witness to the earliest chapters of Earth’s history.
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