Amber & Copal
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Fossilised resin so often has trapped insects, pollen or environmental remains. Can be 300+ mill years old.
Transp to transl yellow-reddish brown. Reddish amber, now rare, from Myanmar.
Soft material often used as beads, cabochons, cravings, rings, earrings or ornate objects.
Less durable (more abundant) resin called copal; lighter yellow than most amber; can be confused with or mis-sold as amber. Can also contain insects.
Both are regularly treated:
- copal treated with complex methods to improve durability and greenish hue can result
- popular treatment in China and Middle East
- common practice called ‘clarification’ uses low heat to dissolve gas bubbles causing translucency
- opposite is beeswax ageing that removes transp
- sun spangles are discoid shapes resulting from fast cooling of heat treated amber
Clean using lukewarm plain water and soft cloth; avoid direct sunlight for long periods; avoid contact with perfumes, hairsprays, nail polish remover.