Alivia - Blue Sapphire & Diamond Ring 18K White Gold
Measure at home with confidence — printable sizer or your existing ring.
How to measure
Use an existing ring
Match the inside of your ring to the closest circle on the printable guide. The circle should sit inside the ring with minimal white showing.
Use the finger sizer strip
Print at 100% scale on US Letter. Cut out the strip, cut the slit, wrap it around your finger with numbers visible, and read the number closest to the opening. Slide it over your knuckle and choose a size that feels comfortable.
Quick fit tips
- Measure at the end of the day (fingers are slightly larger).
- Avoid measuring when hands are cold.
- If you’re between sizes, go up for comfort.
- Wide bands can feel tighter — consider +0.5 size.
Ring Size Chart (AU/UK)
Measurements shown in diameter and circumference.
| AU/UK Size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| H 1/2 | 15.0 | 47.1 |
| J 1/2 | 15.8 | 49.6 |
| L 1/2 | 16.5 | 51.8 |
| N 1/2 | 17.2 | 54.0 |
| O 1/2 | 17.9 | 56.2 |
| Q 1/2 | 18.5 | 58.1 |
| R 1/2 | 19.1 | 60.0 |
| T 1/2 | 19.8 | 62.2 |
| U 1/2 | 20.3 | 63.8 |
| W 1/2 | 21.0 | 66.0 |
| X | 21.6 | 67.9 |
| Z | 22.3 | 70.1 |
FAQ
What if I’m buying a surprise gift?
If you can borrow one of their rings, measure the inside diameter. If unsure, pick a common size and we can guide resizing later.
Should I size up for thicker bands?
Often yes — thicker bands feel tighter. If you’re near the top end of a size, go up by 0.5.
Can you help me confirm my size?
Yes — send us your measurement (mm) or a photo of the printed sizer on your finger and we’ll confirm.
- Free Resizing
- Lifetime Warranty
- Free Ring Customisation*
- Free Insured Shipping on all orders
Alivia - Natural Blue Sapphire Engagement Ring
Elevate your elegance with our Blue Sapphire Ring, exquisitely crafted in 18K white gold and set with a vivid, natural blue sapphire at its center. Surrounding the sapphire are delicate diamond accents, lending extra sparkle and refined contrast. This heirloom-quality piece combines classic sophistication with modern design—perfect for engagements, anniversaries, or a statement of personal style.
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Center Stone: Premium natural blue sapphire
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Accent Stones: Brilliant round-cut diamonds totalling 0.60 ct SI1-F-G
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Metal: Solid 18K white gold, polished to a mirror finish
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Style: Classic solitaire with diamond halo (available in ring sizes 5–9 US)
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Ethical Sourcing: Responsibly mined sapphire & conflict-free diamonds
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Handcrafted: Custom-made in Auckland, NZ, with 4-week build time
Why You’ll Love It:
Each ring is individually inspected and hand-set by our master jewellers, ensuring that your blue sapphire shines with unparalleled depth and your diamonds glitter with lasting brilliance. Wear it solo for a touch of royal colour, or pair it with a diamond band for a show-stopping bridal set.
Order this piece online today! Crafted with care, it takes 6 weeks to create. Need it sooner or want a personal touch? Contact us—we’re happy to make it perfect for you!
