1.5ct Oval Trilogy Diamond Engagement Ring
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
1.5ct Oval Cut Trilogy Diamond Engagement Ring (GIA Certified)
A timeless, high-end trilogy setting designed to spotlight a brilliant 1.5ct oval-cut natural diamond, framed by two perfectly matched trillion-cut side stones. This elegant three-stone engagement ring is crafted for maximum sparkle, balanced proportions, and everyday comfort—finished with a refined 1.8mm band.
Why you’ll love this oval trilogy design
- Trilogy meaning: three stones representing past, present, and future.
- Elongated oval silhouette: flattering on the hand and visually impressive.
- Trillion side stones: add width and brilliance without overpowering the centre.
- Premium craftsmanship: made to a high-end finish with secure stone setting.
Ring Specifications
Centre Stone
| Shape | Oval Cut |
| Carat Weight | 1.50ct (approx.) |
| Clarity | VS2 |
| Colour | G |
| Cut / Make | Excellent |
| Certification | GIA |
Side Stones
| Shape | Trillion Cut (2 stones) |
| Total Carat Weight | 0.40ct (approx. total) |
Setting & Metal
| Metal Options | 18K Yellow Gold, 18K Rose Gold, 18K White Gold, Platinum |
| Band Width | 1.8mm |
| Style | Trilogy / Three-Stone Engagement Ring |
Metal Options: 18K Gold or Platinum
Choose the tone that matches your style: 18K Yellow Gold for classic warmth, 18K Rose Gold for a romantic blush, 18K White Gold for a bright contemporary finish, or Platinum for premium durability and a naturally white metal.
Made for a refined, high-end finish
This ring is designed with clean symmetry and balanced finger coverage. The 1.8mm band keeps the profile elegant while maintaining strength for everyday wear.
Care & Certification
Your centre diamond is GIA certified for confidence and transparency. We recommend professional cleaning periodically and removing your ring for heavy lifting, gym training, and harsh chemicals to keep the setting pristine.
Questions?
Want a different diamond ratio, a lower or higher setting height, or a matching wedding band suggestion? Message us and we’ll help you tailor the ring to your preference.
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!
