Where to see opals in person in London — Hatton Garden dealers, antique markets and UK gem fairs — plus what drives the price and how to buy safely.
Australian opals offer stability and deep colour at a premium; Ethiopian opals deliver neon brightness for less. This guide compares price, durability and...
Twelve practical questions to run through before buying any opal, covering origin, assembled stones, treatments, stability, paperwork and returns.
