The Smarter Approach to Buying an Engagement Ring
Most people start their engagement ring search in the wrong place. They walk into a jewellery shop, fall in love with a mounted ring in a display case, and pay whatever price is on the tag — without ever knowing what the diamond inside is actually worth.
Here is the truth that every jeweller in the high street would prefer you didn't know: the diamond and the ring setting are two completely separate things. And when you buy them together from a jeweller, you pay a premium on both — plus the brand name, the shop rent, and the sales commission.
The smart approach is the one that Antwerp's diamond professionals have practised for decades: choose your certified loose diamond first, then commission a goldsmith to set it. The result is a more beautiful diamond, in a more personal setting, for significantly less money.
Setting Your Budget: Forget the Two-Month Rule
0.4–0.7ct round or oval. G–H colour, VS2–SI1 clarity. Excellent cut. A genuinely beautiful diamond.
0.7–1.2ct. F–G colour, VS1–VS2 clarity. Excellent cut. Outstanding brilliance and presence.
1ct+, D–F colour, VVS1–VS1 clarity. Triple Excellent cut. Investment-grade brilliance.
Buying a loose diamond from Diamantwerp and having it set by an Antwerp goldsmith typically costs 40–70% less than buying an equivalent pre-set ring from a high-street jeweller. On a €3,000 budget, that means you can afford a diamond that a boutique jeweller would charge €5,000–€7,000 for.
Choosing Your Diamond: The 4 C’s for Engagement Rings
The 4 C's — cut, colour, clarity and carat — determine a diamond's quality and price. But for an engagement ring, they don't all carry equal weight. Here's how to prioritise them:
1. Cut — Never Compromise
Cut is the most important factor for an engagement ring. It determines how much light the diamond reflects — and therefore how much it sparkles. An Excellent or Triple Excellent cut grade should be non-negotiable. A poorly cut diamond will look dull no matter how good its other grades are.
2. Colour — Match to the Metal
For platinum or white gold settings: aim for G–H. The slight warmth of these grades is invisible in the ring and saves significantly versus D–F.
For yellow or rose gold settings: H–I colour works beautifully — the warm metal tones complement rather than contrast.
3. Clarity — Eye-Clean is Enough
Clarity grades VS2 and SI1 offer excellent value. The inclusions in these grades are invisible to the naked eye — you need 10× magnification to see them. There is no reason to pay for FL or IF clarity in an engagement ring setting.
4. Carat — Size Isn’t Everything
Carat refers to weight, not size. The cut quality and shape have a far greater impact on how large a diamond appears. A well-cut 0.90ct can look as large as a poorly cut 1.10ct. Focus on cut first; let carat follow.
Best Diamond Shapes for Engagement Rings
The shape is what you see first — it defines the personality of the ring. Each shape has different visual characteristics, brilliance levels, and price points. Here are the most popular choices for engagement rings:
| Shape | Brilliance | Finger Effect | Price vs Round | Best For |
|---|---|---|---|---|
| Round Brilliant | ★★★★★ | Neutral | Reference | Timeless, max sparkle |
| Oval | ★★★★½ | Elongates ✓ | −15–25% | Elegant, looks larger |
| Cushion | ★★★★ | Neutral | −20–30% | Vintage romance |
| Princess | ★★★★ | Neutral | −20–30% | Modern, geometric |
| Emerald | ★★★ | Elongates ✓ | −25–35% | Art-deco, understated |
| Pear | ★★★★ | Elongates ✓ | −15–25% | Distinctive, dramatic |
| Marquise | ★★★★ | Max elongation ✓✓ | −20–30% | Bold, finger-lengthening |
Oval, pear and marquise shapes look larger than a round brilliant of the same carat weight, because their elongated form covers more surface area on the finger. For buyers seeking the best visual impact per euro, oval is currently the most popular alternative to round..
Ring Settings Explained
Once you have chosen your diamond, a goldsmith will set it into the ring of your choice. The main setting styles for engagement rings are:
Solitaire
A single diamond in a simple setting — the most classic and enduring choice. The Tiffany-style six-prong solitaire elevates the diamond high above the band to maximise light entry. The stone is always the focus. Cost of setting: from €300–€800 with a skilled Antwerp goldsmith.
Halo
A ring of smaller diamonds surrounds the centre stone, dramatically increasing visual size. A 0.70ct centre diamond in a halo setting can appear as large as a 1.20ct solitaire. Popular and striking. Setting cost: €600–€1,500.
Pavé Band
Small diamonds set closely together along the band, adding sparkle without increasing the size of the centre stone. Often combined with a solitaire or halo centre. Setting cost: €500–€1,200.
Bezel
A metal rim encircles the diamond, protecting its edges. Very modern and minimalist. Ideal for active lifestyles. Setting cost: €400–€900.
Diamantwerp + Antwerp Goldsmiths
Diamantwerp specialises in certified loose diamonds. We work with a network of trusted Antwerp goldsmiths who can set your diamond in any design — solitaire, halo, pavé or fully custom. This two-step approach means you choose the best diamond at the best price, then have it set exactly as you envision. Contact us to discuss your project — we will guide you through both steps.
Why Antwerp Is the Right Place to Buy
Antwerp handles more than 80% of the world's rough diamond trade and 50% of all polished diamonds. This concentration of supply creates a competitive market where prices are set by dealers, not retailers. When you buy from the Antwerp diamond district, you access that market directly.
Every diamond Diamantwerp sells is sourced through Rapnet — the global professional diamond network — and carries an independent certificate from GIA, HRD Antwerp or IGI. Our physical address at Pelikaanstraat 62, established since 1987, is in the heart of the district where the world's diamonds are traded every day.
Our prices are up to 75% below what you would pay for an equivalent diamond in a high-street jewellery boutique in London, Paris or Amsterdam — because we cut out every intermediary between the diamond and your finger.
Every diamond we sell is also fully compliant with the Kimberley Process Certification Scheme — the international standard that guarantees your diamond is conflict-free. And because we source exclusively through Belgium's regulated diamond supply chain, you can be confident that your stone is ethically sourced at every step of its journey from mine to your ring.
How to Buy Your Engagement Diamond from Diamantwerp
The process is simpler than most people expect:
Browse & Select
Explore our live collection of certified loose diamonds. Filter by shape, carat, colour, clarity and budget. Every stone has a full lab certificate from GIA, HRD Antwerp or IGI.
Personal Consultation
Not sure which diamond is right for your ring? Contact our team for personalised advice. We respond within one business day and can help you narrow the choice to two or three candidates.
Order & Delivery
Order online or contact us directly. Belgium orders are delivered next business day in secure insured packaging. EU delivery within 2–3 business days.
Have It Set
Take your certified diamond to a trusted goldsmith — or ask us for a recommendation. The setting is created around your specific stone, in whatever design you choose. Allow 1–3 weeks for the finished ring.
Frequently Asked Questions About Buying A Diamond Engagement Ring
How much should I spend on a diamond engagement ring?
The old "two months' salary" rule is an outdated marketing myth from the 1940s. A meaningful engagement ring can be bought for €1,500–€5,000 — and by choosing a loose certified diamond from Antwerp instead of a pre-set ring from a high-street jeweller, you can get a significantly larger, higher-quality diamond for the same budget.
What is the best diamond shape for an engagement ring?
The round brilliant is the most popular choice due to its maximum brilliance and versatility. For those wanting a larger look at a lower price, oval, cushion and pear shapes offer excellent value. Elongated shapes like oval and marquise also make the finger appear longer and slimmer.
What 4Cs matter most for an engagement ring diamond?
For engagement rings, cut quality is the most important — it determines how much the diamond sparkles. After cut, colour (aim for G–H for white gold, H–I for yellow gold) and clarity (VS2 or SI1 is excellent value) matter most. Carat weight should be the last consideration, not the first.
Why buy a loose diamond instead of a pre-set engagement ring?
Pre-set rings from jewellers include a 100–300% markup on the diamond itself, plus manufacturing and retail costs. Buying a loose certified diamond directly from Antwerp and having a goldsmith set it typically saves 40–70% while giving you full control over both the diamond quality and the ring design.
Can Diamantwerp help with the ring setting as well?
Diamantwerp specialises in loose certified diamonds. We can recommend reputable goldsmiths in Antwerp and Belgium who will set your diamond in any design at a fraction of what a branded jeweller would charge. Contact us to discuss your project.
What certificate should a diamond engagement ring have?
Always insist on a certificate from GIA, HRD Antwerp, or IGI — the three most respected independent laboratories in the world. Never accept a certificate issued by the shop that sold you the diamond. The certificate number is laser-inscribed on the diamond's girdle and can be verified on the lab's website.
How do I know if a diamond is real?
The most reliable method is an independent certificate from GIA, HRD Antwerp or IGI. The certificate number is laser-inscribed on the diamond's girdle and verifiable directly on the lab's website. All diamonds sold by Diamantwerp come with such a certificate.
How long does it take to buy a diamond engagement ring from Diamantwerp?
Selecting and ordering a loose diamond takes 1–3 days. Delivery within Belgium is typically next day after dispatch. Having a goldsmith set the stone takes 1–3 weeks depending on the design. Allow 3–4 weeks total if ordering a custom setting.
