What to Know Before Buying an Opal Ring Online

What Buying an Opal Ring Online Actually Requires

Buying a ring online involves more considerations than any other piece of jewellery. Ring size. Setting security. How the stone sits on the hand. Whether the profile is comfortable for everyday wear. And with opal specifically — a stone that requires a little more care than harder gems — there are additional questions worth asking before you commit.

Here's a practical guide to buying an opal ring online with confidence.

Ring Size First

Get your ring size right before anything else. There are several ways to measure accurately at home:

• Wrap a thin strip of paper around your finger, mark where it overlaps, and measure the length in millimetres — this is your circumference. Divide by 3.14 for diameter.
• Measure an existing ring that fits well across its internal diameter
• Visit a local jeweller for a professional sizing — most will do this free

Note that fingers change size throughout the day — they're slightly larger in the afternoon and evening, and in warmer temperatures. For a comfortable fit across all conditions, measure in the afternoon.

At Iona Opal Australia, our ring sizes are listed in Australian/UK sizing (letter) with international equivalents. If in doubt, contact us and we'll help you find the right size.

Understanding the Setting

For opal rings specifically, the setting style matters for durability. Key questions to ask:

• Is the opal secure? — Look for settings with solid bezel surrounds or multiple secure claws. A well-set opal shouldn't move or rock in its setting.
• How high does the stone sit? — A very high, domed setting is more vulnerable to knocks. Lower profile settings are more practical for everyday wear.
• What metal? — Sterling silver, 9ct gold, 14ct gold, and rose gold all have different maintenance needs.

Opal Type and Everyday Wearability

If you're buying an opal ring for daily wear, consider opal type carefully. Boulder opal rings, with their natural ironstone backing, are among the most durable opal ring options. Lightning Ridge black and semi-black opals in secure settings also wear well daily. Crystal opals are typically slightly more fragile and require a little more mindfulness.

Browse Our Opal Ring Collections

Shop our full range of opal rings, including sterling silver opal rings for everyday wear and gold opal rings for milestone occasions.