: Features a light, milky background with softer color play. It is the most common and affordable variety.

: Formed within ironstone, these often have a dark, natural backing that makes them durable and gives them a striking appearance.

Frequently Asked Questions * Is opal jewelry good for daily wear? Opals are softer than many gemstones, with a Mohs hardness of 5. Buying guide FAQs on Opals - The Natural Gemstone Company