By Carat Smart Australia — Natural & Fancy Colour Diamonds
Oval diamond engagement rings are elegant, flattering and increasingly popular — especially for couples who want the brilliance of a round cut with a more unique, elongated silhouette. This guide (written for buyers in Perth and the surrounding areas) covers everything you need to know to choose an oval that looks stunning on the hand, fits your budget and is certified for quality.
Why choose an oval diamond?
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Illusion of size: Oval diamonds appear larger than round diamonds of the same carat because of their elongated shape and greater surface area.
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Finger-slimming effect: The length visually elongates the finger, making it very flattering on most hands.
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Classic + modern: The Asscher/round/emerald debate aside — oval delivers vintage glamour with contemporary appeal.
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Sparkle with personality: With the right cut, ovals show brilliant light return and a unique bow-tie pattern that can be minimized by a good cutter.
Key things to evaluate: Cut, Carat, Colour, Clarity (the 4Cs) — plus L/W ratio
1. Cut quality (most important)
For ovals, cut determines brilliance, fire and the intensity of the bow-tie. Look for:
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Strong light return (bright, not dark).
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Symmetry — both halves of the oval should match.
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Proportions — pavilion and table percentages are important, but visual inspection is king.
Tip: Ask to view the diamond face-up under daylight and LED; request imaging (ASET or Ideal-Scope) if available.
2. Length-to-width (L/W) ratio
This ratio controls how round or elongated the oval looks:
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~1.30–1.45 — the most popular range.
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~1.30–1.35 = slightly rounder (more classic).
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~1.40–1.45 = more elongated and dramatic.
Choose by hand size and personal style: smaller fingers often suit slightly more elongated ovals.
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3. Carat (size)
Because ovals look bigger face-up, many buyers select slightly lower carat weights to achieve “visual punch” while staying on budget. A well-cut 0.9–1.2ct oval can appear larger than a poorly cut 1.2ct.
4. Colour
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Ovals can show body colour more than rounds because of shape.
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For white diamonds, G–H often gives the best value if set in white metal; H–I can be excellent when set in yellow or rose gold.
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For fancy colour ovals (pink, yellow, blue), value depends on hue intensity and rarity.
5. Clarity
Because of the elongated shape, inclusions can be more visible. SI1 or better is a safe starting point, but visual inspection is essential — a well-placed SI2 can still look clean to the eye.
6. Certification
Always buy certified diamonds (GIA, IGI, HRD, EGL). The certificate confirms proportions, clarity, colour and any treatments (HPHT, coating). For natural fancy colours, insist on lab-grading that specifies whether the colour is natural or treated.
Popular settings for oval engagement rings
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Solitaire (classic): Shows off the shape — best for strong cut ovals.
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Halo: Makes the center appear larger; excellent for highlighting faint colours and masking bow-ties.
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Three-stone: Adds weight and balance; side stones can be tapered ovals or rounds.
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Pavé / Cathedral: Adds sparkle with a delicate profile.
Metal choice: Platinum for durability and white look; 18K Yellow/Rose gold intensifies slight warm tones in the stone and can be more forgiving on colour.
Budgeting & value tips (Perth buyers)
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For the best value: prioritize cut and shape over carat. A better cut 0.95ct often looks brighter and larger than a dull 1.2ct.
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Consider buying a near-colourless G–H oval and setting it in warm metal (if saving on colour).
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Shop local in Perth (Subiaco showroom) or request appraisal & imaging before purchase — this reduces risk and lets you physically compare stones.
Custom design and delivery timeline
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In-stock stones: 1–2 weeks to size and set.
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Custom design / special orders: 4–8 weeks (longer for fancy colours or bespoke mounting).
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Inspected & certified: Always ask for the original certificate and a written warranty.
Caring for your oval engagement ring
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Regular cleaning at home with warm water and mild detergent; soft brush for pavé settings.
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Annual check at a trusted jeweller (prongs, setting tightness).
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Insure high-value rings (contents/home & personal jewellery insurance).
Why buy your oval engagement ring from Carat Smart Australia (Subiaco, Perth)?
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Hand-selected natural and fancy colour diamonds — wide selection of oval cuts.
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Ethical sourcing and full certification.
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On-site consultations for ring design and setting advice.
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Local presence in Subiaco — view stones in person, avoid surprises, and get tailored aftercare.
Call to action: Book a private consultation at our Subiaco showroom or request a video viewing of our in-stock oval diamonds. [Contact Carat Smart Australia ›]
Carat Smart Australia, C7/223 Bagot Rd. Subiaco WA - Oval Diamond Engagement Rings
FAQ
Q: What is the ideal L/W ratio for an engagement ring?
A: Typically 1.30–1.45; choose closer to 1.30 for rounder look, 1.40+ for elongated style.
Q: Can I get a natural pink oval in Perth?
A: Yes — Carat Smart sources natural fancy colour ovals; availability is limited and pricing reflects rarity.
Q: Do oval diamonds have a bow-tie?
A: Many do; a well-cut oval minimizes the bow-tie. Always inspect face-up and ask for imaging.