Certified Diamonds

Miller Gold & Co offers a curated selection of certified loose diamonds in South Africa. Whether you are designing a custom engagement ring or adding to your collection, our diamonds are selected for brilliance, cut and quality.

Our loose diamond collection includes:

Round brilliant cut diamonds • Princess cut diamonds • Oval and pear cut diamonds • GIA and EGL certified stones • Fancy yellow and coloured diamonds

Every diamond is certified and selected by Sindy Miller, our GIA-qualified gemologist. We offer stones across a wide range of carat weights and budgets. Pair your diamond with our bespoke ring design service to create your perfect piece.

We deliver across South Africa. Contact us to discuss your requirements.

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  • Sold out
A single princess-cut radiant diamond shown in a clean studio shot against a solid white background. Princess Cut Diamond. 0.2850cts. SI1 G
Princess Cut Diamond. 0.2850cts. SI1 G
R 3,500.00
R 3,500.00
A heart-shaped brilliant-cut diamond shown on a clean white background. A GIA diamond dossier certificate page showing the GIA logo, heart brilliant shape, measurements, grading results for a 0.72 carat color grade G clarity S1 diamond, and additional grading information on an off-white textured background.
Heart Shape Diamond 0.72cts G SI1
R 11,600.00
R 11,600.00
A single princess-cut radiant diamond shown in a clean studio shot against a solid white background. A certification label for a gemstone with text detailing its SA Number, weight, shape, clarity, color grade, cut grade, symmetry, polish, fluorescence, and comments, along with two small square diagrams and a signature block.
Princess Cut Diamond 1.0380cts VS2 G
R 38,150.00
R 38,150.00
  • Sold out
Round Brilliant Cut Diamond 0.80cts H VS2 GIA Natural Diamond Dossier report card showing grading details for a round brilliant cut diamond, including carat weight, color grade, clarity grade, and cut grade, on a white background with gold and brown text.
Round Brilliant Cut Diamond 0.80cts H VS2
R 12,860.00
R 12,860.00
Round Brilliant Cut Diamond 0.5500cts H SI2 A round brilliant cut natural diamond certificate of authenticity with detailed specifications, weight, measurements, and a blue certification panel on a white background.
Round Brilliant Cut Diamond 0.5500cts H SI2
R 5,050.00
R 5,050.00
Round Brilliant Cut Diamond 0.452ct VS2 TC 1 (M) A white diamond certification report card from The Jewellery Council of South Africa and International Diamond Certification Laboratory, showing details for a round brilliant-cut diamond with a 0.452 carat weight and VS2 clarity.
Round Brilliant Cut Diamond 0.452ct VS2 TC 1 (M)
R 3,200.00
R 3,200.00
Round Brilliant Cut Diamond 0.7548ct SI1 3 (I) Round Brilliant Cut Diamond 0.7548ct SI1 3 (I)
Round Brilliant Cut Diamond 0.7548ct SI1 3 (I)
R 9,190.00
R 9,190.00
Round Brilliant Cut Diamond 0.8650cts SI1 K A blue Geological Laboratory South Africa certificate card with printed text, a circular E.G.L.
Round Brilliant Cut Diamond 0.8650cts SI1 K
R 9,215.00
R 9,215.00
Round Brilliant Cut Diamond 1.1600cts VS1 F Round Brilliant Cut Diamond 1.1600cts VS1 F EGL Grading Report
Round Brilliant Cut Diamond 1.1600cts VS1 F
R 55,610.00
R 55,610.00
  • Sold out
Round Brilliant Cut Diamond 0.3580cts I2 F Round Brilliant Cut Diamond 0.3580cts I2 F EGL REPORT
Round Brilliant Cut Diamond 0.3580cts I2 F
R 2,450.00
R 2,450.00
A single princess-cut radiant diamond shown in a clean studio shot against a solid white background. A gemological diamond report card from the European Gemological Laboratory (E.G.L)
Princess Cut Diamond 0.2850cts SI1 G
R 3,500.00
R 3,500.00
A single princess-cut radiant diamond shown in a clean studio shot against a solid white background. Princess Cut Diamond 0.1860cts SI2 F EGL REPORT
Princess Cut Diamond 0.1860cts SI2 F
R 2,800.00
R 2,800.00
A single princess-cut radiant diamond shown in a clean studio shot against a solid white background. A diamond color report card for a South African E.G.L.
Princess Cut Diamond 0.3050cts I1 K
R 3,000.00
R 3,000.00
A single princess-cut radiant diamond shown in a clean studio shot against a solid white background. A diamond report card from E.G.L.
Princess Cut Diamond 0.4830cts VS2 I
R 5,000.00
R 5,000.00
A single princess-cut radiant diamond shown in a clean studio shot against a solid white background. Princess Cut Diamond 0.7910cts SI1 L
Princess Cut Diamond 0.7910cts SI1 L
R 7,000.00
R 7,000.00
Round Brilliant Cut Diamond 0.362cts VS1 H Round Brilliant Cut Diamond 0.362cts VS1 H
Round Brilliant Cut Diamond 0.362cts VS1 H
R 4,500.00
R 4,500.00