Loose Diamond · SKU 0-63ct-round-i-si1-gia-1558205088
0.63ct Round I SI1 GIA
0.63Ct · Round · I · SI1 · GIA
R 12 809,00incl. VAT
R 11 138,00 excl. VAT (trade reference)
The website shows a sample of what we hold, and stock moves quickly. Message us to confirm this stone →
Every stone here is one of one. We confirm availability before any reservation becomes final, so it is worth a quick WhatsApp to check before you reserve.
A written quote on this stone costs nothing and commits you to nothing. Comparing us against another quote? Bring it: we price like-for-like, and if we cannot beat it we will say so bluntly. And if the stone you want is not on the site, ask: we list a selection, never the full range. Get a written quote →
- Carat
- 0.63 ct
- Shape
- Round
- Colour
- I
- Clarity
- SI1
- Certification
- GIA 1558205088
- Measurements
- 5.46 - 5.50 x 3.44 mm
About this stone
0.63ct natural round brilliant diamond, I colour and SI1 clarity. Excellent cut. GIA report 1558205088. Confirm current availability with the Bedfordview desk.
What these grades mean on the finger
Graded I, a warm white. In platinum or white gold a careful eye may catch the warmth; in yellow or rose gold it disappears entirely, which is why I colour stones pair so well with warmer metals.
SI1 clarity: small inclusions a loupe will find. At this size most SI1 stones are eye-clean, and we confirm that on the bench loupe before you commit.
At 0.63 carats, a well-cut round of this weight faces up at roughly 5.4 mm across. Cut quality decides how big it looks from across the table, which is why the cut grade matters more than the weight.
Graded by GIA, the laboratory that wrote the 4Cs. The original report travels with the stone and is independently verifiable on GIA Report Check before you pay a cent.
Provenance
- Prodiam sells diamonds cut at Procut DCW and diamonds sourced polished through the trade. Ask the desk to confirm the route and available provenance records for this individual stone.
- A grading report records the diamond's characteristics. It does not by itself establish where the diamond was mined or who cut it.
- Certificate issued by GIA, report 1558205088. Independently verifiable on the GIA Report Check →
Measurements and price context
Read this diamond's report alongside the dated comparison samples below. Measurements and price guides help frame a viewing; they do not replace one.
Its longest face-up measurement is 5.5 mm, within 2.5% of the 5.40 mm estimate derived from our sample for this shape and scaled to this weight. Compare its width and proportions as well.
The report records 62.7% depth. Read this alongside the cut grade, table, crown and pavilion proportions; depth alone does not establish light performance.
Dimension estimates use a sample of 5 078 sourced listings captured 25 August 2026, scaled to this stone's weight. They are estimates, not a cut grade.
-
Natural diamonds only
We sell natural diamonds and diamond-set jewellery. Ask us about the grading report and available origin documentation for your chosen stone. Why we don’t sell lab-grown →
-
Independent grading reports
The grading laboratory is shown per stone. Review its report and the individual diamond before choosing; sourced examples can include GIA, EGL and IGI.
-
Insured delivery, SA & worldwide
Overnight across South Africa via Brink’s, G4S or our nominated jewellery courier. Insured worldwide dispatch via Ferrari Group and FedEx Custom Critical.
-
Same-address GIA verify
GIA South Africa office is in our building. On-the-spot re-grading on request before settlement.