Natural Diamond Quote
- Ask for the GIA certificate
- Send the certificate number or a photograph
- Include the quoted price, carat and shape
Diamond quote review · South Africa
Already Have a Diamond Quote?
GIA natural · IGI lab-grown · Dealer review before you buy.
Send David the certificate and quoted price before you buy. He will explain the quality, identify anything worth questioning, and advise whether Diagem may be able to offer a better or comparable certified diamond.
- 25+ years in South African diamonds
- GIA natural and IGI lab-grown guidance
- Personal dealer review
- No online checkout or blind purchase
Check before you buy
What David will review
A diamond certificate review looks beyond the headline grades. David will compare the available document, quotation and price details so you know what to question before payment.
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Certificate authenticity and basic details
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Natural versus lab-grown origin
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Carat, cut, colour and clarity
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Polish, symmetry and proportions
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Measurements and apparent spread
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Fluorescence or treatment disclosures where relevant
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Visual risks that may not be obvious from headline grades
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Quoted price, currency and included items
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Whether the quotation includes only the diamond or also a ring
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Whether Diagem may be able to source the same or a comparable option
Important: A document review is preliminary. It cannot guarantee the condition, authenticity or appearance of a diamond that Diagem has not physically inspected.
Use the correct certificate
Natural and lab-grown quote reviews
Natural and lab-grown diamonds must be assessed within the correct market. Choose the card that matches the diamond you have been quoted.
Lab-Grown Diamond Quote
- Ask for the IGI certificate
- Send the certificate number or a photograph
- Include the quoted price, carat and shape
Explore natural diamonds, lab-grown diamonds, and GIA certified diamonds, or read the diamond buying guide before comparing your quote.
A practical process
How the diamond quote review works
- Send the quotation and certificate.
- Tell David whether it is natural or lab-grown.
- Include the quoted price, currency, carat and shape.
- David reviews the available information.
- David explains anything material.
- If appropriate, Diagem may suggest a better or comparable certified option.
- You decide without pressure.
Compare before you commit
Why obtain a diamond second opinion?
A low price is not automatically good value. A practical review helps you compare diamond quotes on like-for-like details rather than one headline number.
Similar grades can look different
Two diamonds with similar headline grades can differ in spread, brightness and visible character.
Price needs context
A low price does not automatically mean good value, especially when the exact diamond or inclusions have not been considered.
Proportions affect appearance
Certificate details, measurements and proportions can change how large and lively a diamond appears.
Check what is included
A quotation may exclude VAT, setting, manufacture or other costs. Confirm whether it covers a loose diamond or complete ring.
Compare the correct market
Natural and lab-grown diamonds must be compared separately, using the correct origin and certification information.
Know what to ask
An experienced diamond dealer in Johannesburg can identify practical questions worth asking before you pay.
Prepare your review
What to send
- Quote or invoice photograph
- GIA or IGI certificate
- Certificate number
- Natural or lab-grown
- Carat and shape
- Quoted price and currency
- Loose diamond or complete ring
- Any deadline or preferred viewing date
Fastest route
Send the quote on WhatsApp
Ask David before you buy. Send clear photographs or the certificate number and include the quoted price.
Send Your Quote to DavidEmail enquiry
Request your diamond quote review
Complete the form and David will reply personally. This form does not accept uploads. After submitting, send the quotation and certificate through WhatsApp.
For natural diamonds, send the GIA certificate. For lab-grown diamonds, send the IGI certificate.
Diagem trust and proof
Personal guidance from an established South African dealer
Diagem has 25+ years in South Africa’s diamond trade. Johannesburg viewings are by appointment. Buyers elsewhere in South Africa can begin by sending the quote and certificate digitally.
DDCSA memberWFDB memberJohannesburg viewing by appointment
Google review by Martin Smith
★★★★★
“I had zero experience with diamonds, but he guided me patiently, honestly, and never pushy. He helped me find exactly the right ring in a short time, and the price was very fair.”
Google review by laurianne dreyer
★★★★★
“David - he is so knowledgeable, professional, and really went out of his way to find me the perfect stone.”
Google review by Allen Chimes
★★★★★
“These guys were a pleasure to deal with. Nothing too difficult for David - answered all my queries.”
Recent public reviews from Diagem Diamonds’ Google Business Profile. View Diagem reviews on Google.
Questions before you send
Diamond quote review FAQ
Can David review a diamond quote before I buy?
Yes. Send the quotation, certificate and quoted price. David can give you a preliminary dealer review of the available information before you decide.
What information should I send?
Send the quote or invoice, certificate number or photograph, natural or lab-grown origin, carat, shape, quoted price and currency, and whether the quote is for a loose diamond or complete ring.
Can Diagem review a GIA certificate?
Yes. For a natural diamond quote, send the GIA certificate number or a clear photograph together with the quoted price and diamond details.
Can Diagem review an IGI lab-grown certificate?
Yes. For a lab-grown diamond quote, send the IGI certificate number or a clear photograph together with the quoted price and diamond details.
Is the review independent?
No. This is a practical dealer second opinion, not an independent valuation. Diagem may offer the same or a comparable certified diamond if an appropriate option is available.
Can Diagem guarantee a diamond from documents alone?
No. A document review is preliminary and cannot guarantee the condition, authenticity or appearance of a diamond Diagem has not physically inspected.
Can Diagem better another dealer’s quote?
Possibly. If appropriate stock or sourcing is available, Diagem may be able to offer the same or a comparable certified diamond. It is not guaranteed and any comparison must be like for like.
Does Diagem buy diamonds from the public?
No. This service is for buyers considering a diamond purchase. Diagem does not handle online requests from members of the public wanting to sell diamonds or jewellery.
Can I arrange a viewing in Johannesburg?
Yes. Johannesburg viewings are available by appointment with David when there is an appropriate diamond to inspect or compare.
What if I am outside Johannesburg?
Send the quotation and certificate digitally for a preliminary review. David can explain the available information remotely and discuss practical next steps for buyers elsewhere in South Africa.