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Rectangular Opal Ring
- Regular price
- $160.00
The Rectangular Opal Ring features a luminous 4 × 6 mm opal in a clean geometric setting. Soft blue-white flashes shift subtly with the light, while petite white zircon accents around the center and along the shoulders add crisp sparkle without overpowering the opal’s natural-looking play of color.
Crafted in 925 sterling silver, the ring features an approximately 1.6 mm slim band and weighs around 1.32 g. Its refined profile works beautifully on its own or stacked with plain bands, half-eternity rings, and other silver styles. As opal is an October birthstone, it also makes a thoughtful October birthday or anniversary gift.
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Details & Dimensions
Details & Dimensions
How to Style It
How to Style It
Wear it alone for a quiet, minimal look or layer it with complementary LUMERUNE pieces to create a more personal combination.
Delivery & Returns
Delivery & Returns
Estimated delivery: 6–14 business days after dispatch.
Processing: 1–2 business days. Free standard shipping. Shipping details.
Request eligible returns within 14 days of delivery. Return postage normally applies; conditions and exclusions apply. Return details.
Care & Sustainability
Care & Sustainability
Keep your jewelry away from water, perfume, lotions, and household chemicals. Wipe gently with a soft, dry cloth after wear and store each piece separately to help protect its finish.
Size Guide
Ring size guide
Use a ring you already wear
- Lay it flat. Choose a ring that comfortably fits the intended finger.
- Measure inside. Read the inner diameter straight through the centre in millimetres. Exclude the metal band.
- Find your size. Match the measurement to the US chart below.
No ring to measure?
Wrap a narrow paper strip around the finger base, mark the overlap and measure that length in mm. Check that it can pass over your knuckle. Repeat at room temperature.
View ring size chart · US 3–10
| US size | Inside diameter (mm) |
Circumference (mm) |
|---|---|---|
| 3 | 14.1 | 44.2 |
| 3.5 | 14.5 | 45.5 |
| 4 | 14.9 | 46.8 |
| 4.5 | 15.3 | 48.0 |
| 5 | 15.7 | 49.3 |
| 5.5 | 16.1 | 50.6 |
| 6 | 16.5 | 51.9 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7.5 | 17.7 | 55.7 |
| 8 | 18.1 | 57.0 |
| 8.5 | 18.5 | 58.3 |
| 9 | 18.9 | 59.5 |
| 9.5 | 19.4 | 60.8 |
| 10 | 19.8 | 62.1 |
Approximate conversions; rounding and ring style can affect fit. Available sizes are listed on each product page.
Between sizes or choosing a wide band? A physical ring sizer gives a more reliable fit than paper. For adjustable rings, follow the product’s stated range and avoid repeated bending.
