GemDiam

GemDiam An online boutique where you can purchase quality, pre-owned gemstones and jewellery. To sell your pre-owned items, enquire on our website.

Clean & LuxuryRefined sterling silver, ripple-effect texture and timeless styling—now at a price that makes luxury acces...
27/01/2026

Clean & Luxury
Refined sterling silver, ripple-effect texture and timeless styling—now at a price that makes luxury accessible. Normally R1,200, we’re retailing the Newbridge Silver Bangle for just R650.

www.gemdiam.co.za

A diamond that doesn’t need to shout.Floating lab-grown brilliance from R6,500.Chain not included. Gemdiam.co.za
20/01/2026

A diamond that doesn’t need to shout.

Floating lab-grown brilliance from R6,500.

Chain not included.

Gemdiam.co.za

A diamond that doesn’t need to shout.Floating lab-grown brilliance from R6,500.Gemdiam.co.za
20/01/2026

A diamond that doesn’t need to shout.

Floating lab-grown brilliance from R6,500.

Gemdiam.co.za

This pendant features a lab-created emerald set in a sterling silver mount on a matching silver chain. The emerald measu...
15/01/2026

This pendant features a lab-created emerald set in a sterling silver mount on a matching silver chain. The emerald measures approximately 7.90 × 6.10 mm with an estimated weight of 1.40 carats. Lab-created emeralds have the same chemical, physical, and optical properties as natural emeralds, offering identical beauty and brilliance. This gemstone is 100% real and certified by The Gem Lab.

Normal retail price: R5,500
Our price: R3,200

09/01/2026

Our coloured stone reports relate to price. The most important grade is the colour. We then deduct points for everything affecting the beauty of the stone from the colour grade until you reach the final grade which relates to price. If you look at the colour grade and the final grade is lower then there have been some deductions. For more info on the ICSL coloured stone grading system go to our website www.gemlab.co.za. The grades are in percentages.

A rare emerald-cut tourmaline with striking yellow-green tones and exceptional presence.Certified, beautifully proportio...
31/12/2025

A rare emerald-cut tourmaline with striking yellow-green tones and exceptional presence.
Certified, beautifully proportioned, and cut to maximise brilliance — a true collector’s stone.

Retail value: R40,000
Our price: R22,000

A once-off opportunity to own a statement gem at exceptional value.
DM us for enquiries or secure it before it’s gone.

A timeless diamond ring with classic character and lasting value.Featuring a 0.53ct round brilliant centre diamond, comp...
20/12/2025

A timeless diamond ring with classic character and lasting value.
Featuring a 0.53ct round brilliant centre diamond, complemented by six additional round brilliant diamonds, all set in solid 9K yellow gold. Professionally valued and ready to be worn or gifted.

Selling price: R29,500
Available now from Gemdiam

Certified Natural Sapphire | Cushion CutThis exceptional 3.852ct natural sapphire features a classic cushion cut with a ...
18/12/2025

Certified Natural Sapphire | Cushion Cut

This exceptional 3.852ct natural sapphire features a classic cushion cut with a rich yellowish-orange hue, slightly brownish in tone.

Graded Good for colour, Lightly Included for clarity, and carrying a Medium+ final grade, this gemstone offers both beauty and certified value.

Certified by The Gemlab – Gemmological Services

Dimensions: 10.10 × 8.80 × 4.76 mm

Estimated retail replacement value: R107,000
Our resale price: R75,000

Available now at gemdime.co.za

A rare, certified sapphire — ideal for collectors, investors, or a bespoke jewellery piece.

Elegant 18K white gold diamond ring featuring two exquisite round brilliants (0.30ct & 0.28ct, J colour, VS-SI clarity)....
11/12/2025

Elegant 18K white gold diamond ring featuring two exquisite round brilliants (0.30ct & 0.28ct, J colour, VS-SI clarity). Officially valued at R43,700 by The Gem Lab, certified by an AGA Accredited Senior Gemmologist.

Now available at a remarkable price of R24,000. A truly exceptional opportunity to own a stunning piece of fine jewelry.

Valued 29 August 2022. For viewing or purchase details, please send a direct message.

Address

Cape Town

Opening Hours

Monday 09:00 - 16:00
Tuesday 09:00 - 16:00
Wednesday 09:00 - 16:00
Thursday 09:00 - 16:00
Friday 09:00 - 16:00

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