Birthstone Month: October

Available Cuts:
• Cabochon
• Bead
• Carved
• Oval
• Round
• Freeform

Fact Sheet:
• Mineral: Opal
• Chemical Composition: SiO2·nH2O (Hydrated Silicon Dioxide)
• Colours: Play-of-colour with a spectrum of hues, ranging from white, black, blue, orange, to red
• Country of Origin: Australia, Ethiopia, Mexico, Brazil, USA
• Estimated Market Value per Carat Weight: $10 - $15,000+ depending on type, colour play, and origin

Opal has been revered for its captivating play-of-colour, with shifting hues that create a mesmerising display. The Ancient Romans believed opals were the most precious and powerful of all gemstones, as they encapsulated the colours of all other gems. In the Middle Ages, opals were considered lucky charms that could bring about health and good fortune. Known as the "Queen of Gems," opal has a long history of being a symbol of hope, purity, and truth.

When purchasing opals, focus on the intensity and range of colours in the play-of-colour effect, with rarer colours such as red and violet being more valuable. Black opals from Australia, especially those from Lightning Ridge, are the most prized due to their vibrant and intense play-of-colour against a dark background. Be cautious of doublets and triplets—composite stones that are less valuable than solid opals. Due to their relatively low hardness and sensitivity to temperature changes, opals should be handled with care, and it is recommended to store them in a moisture-controlled environment to prevent drying out.