3 Carat Three Stone Radiant Cut Lab Grown 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
Modern Radiant Trilogy Engagement Ring
VS1 • E Colour • Excellent Make — 3.00ct
Lab-grown diamond E VS1, Excellent cut, IGI-certified shown in trilogy setting
- Center Carat: 3.00ct
- Clarity: VS1 (exceptional purity)
- Colour: E (colourless)
- Certificate: IGI
- Side Diamonds: 2X Trillion
- Metal: 18K Gold or Platinum
- Lead time: ~3–4 weeks, made-to-order
3 Carat Three Stone Radiant Cut Lab Grown Diamond Engagement Ring
The 3 Carat Three Stone Radiant Cut Lab Grown Diamond Engagement Ring by Raphana Jewellery is a bold and sophisticated expression of modern luxury. Featuring a striking radiant cut centre diamond complemented by two perfectly matched side stones, this design offers exceptional brilliance and presence.
At the heart of the ring is a stunning 3 carat radiant cut lab grown diamond, known for its unique combination of step-cut elegance and brilliant-cut sparkle. The three stone setting enhances the centre diamond while adding depth, balance, and symbolic meaning.
Available in platinum, 18K white gold, yellow gold, or rose gold, this ring is crafted to achieve a refined, high-end finish suitable for a lifetime of wear.
Why Choose a Three Stone Engagement Ring?
The three stone design represents the past, present, and future of a relationship, making it one of the most meaningful engagement ring styles. The side stones enhance the brilliance of the centre diamond while creating a fuller, more luxurious look.
- Symbolic design representing your journey together
- Enhances centre diamond size and brilliance
- Balanced and elegant appearance
- Timeless yet modern engagement ring style
The Beauty of Radiant Cut Diamonds
Radiant cut diamonds are celebrated for their bold shape and exceptional sparkle. With trimmed corners and brilliant faceting, they combine the elegance of emerald cuts with the fire of round diamonds.
A 3 carat radiant engagement ring offers a powerful visual impact while maintaining a refined and sophisticated look.
- Brilliant faceting for maximum sparkle
- Distinctive rectangular or square shape
- Durable cut with trimmed corners
- Perfect balance between classic and modern
Lab Grown Diamonds – A Modern Choice
Lab grown diamonds offer the same physical and optical properties as natural diamonds, providing exceptional brilliance with a more accessible approach to larger carat sizes.
Each diamond is carefully selected and certified by respected laboratories such as IGI or GIA, ensuring premium quality and performance.
- Identical to natural diamonds
- Ethically produced
- Excellent value for larger stones
- Certified for quality and authenticity
Ring Specifications
- Centre Stone: Radiant Cut Lab Grown Diamond
- Total Carat Weight: Approximately 3 Carats
- Side Stones: Two matching diamonds
- Diamond Colour: D–F
- Diamond Clarity: VS or higher
- Certification: IGI / GIA
- Metal Options: Platinum, 18K White Gold, 18K Yellow Gold, 18K Rose Gold
- Setting Style: Three Stone
Crafted by Raphana Jewellery
Each engagement ring by Raphana Jewellery is crafted with precision, combining expert craftsmanship with a refined luxury aesthetic. Designed to last a lifetime, this piece reflects exceptional attention to detail and quality.
Made to order, this ring can be customised to suit your preferences, from diamond proportions to metal choice.
Custom Engagement Rings
Looking to personalise your ring? Our team can assist you in creating a bespoke version of this radiant three stone engagement ring, tailored to your exact vision.
Contact us or book a consultation to begin your custom design journey with Raphana Jewellery.
Frequently Asked Questions
Is radiant cut a good choice for engagement rings?
Yes, radiant cut diamonds offer exceptional sparkle and durability, making them a popular choice for modern engagement rings.
What makes a three stone ring special?
Three stone rings symbolise the past, present, and future, while also enhancing the size and brilliance of the centre diamond.
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!
