Data

Data endpoints

Machine-readable SA diamond price + lab-grown collapse datasets. CSV and JSON. CC BY 4.0. Free to cite, embed, redistribute.

Endpoints

SA Diamond Price Index, May 2026

7 carat bands (0.50ct to 3.00ct) at G/VS2/Excellent GIA spec. For each: natural wholesale + retail ZAR ranges, lab-grown wholesale + retail ZAR ranges, Rapaport per-carat USD reference. Plus channel-markup multipliers (Bedfordview wholesale, mid-tier independent, chain mall retail, tourist tier).

Lab-grown wholesale price collapse, 2019 to May 2026

Annual rand-converted wholesale price for a 1ct G/VS2 Excellent GIA stone, natural vs lab-grown CVD, 2019 through May 2026. Includes ZAR/USD average per year, Rapaport per-carat USD baseline, and annotated drivers (Lightbox launch, IGI lab-grown grading volume surpass, etc.).

SA Diamond Dealer Database, May 2026

16 verified South African diamond dealers across the four SA operating models (wholesale-to-public, designer-boutique, mall-chain retail, retail-independent). Fields: id, name, canonical website, location, founded year, operating model, stated phone / WhatsApp / email / hours, regulator status, source date. Publicly verifiable data only. Full HTML version at /south-african-diamond-dealer-database/.

Quote Bank ledger (crowdsourced buyer-paid prices)

Anonymous buyer-submitted SA diamond purchase records, bin-coded by spec band, dealer category, suburb, and month. Aggregated medians feed each monthly Price Report. Public ledger CSV planned for v1.1 (1 July 2026 refresh) once 100+ verified submissions are collected.

License

Creative Commons Attribution 4.0 International (CC BY 4.0). You may copy, redistribute, remix, transform, and build upon the material for any purpose, including commercially. The only requirement is attribution.

How to cite

Inline (journalism):

According to The Diamond Edit’s SA Diamond Price Index
(https://diamondedit.co.za/sa-diamond-price-report-2026/), a 1.00ct
GIA G/VS2 Excellent diamond wholesales at R75,000 to R110,000 in
South Africa in May 2026.

APA:

Mokoena, T. (2026). The SA Diamond Price Index, May 2026. The Diamond
Edit. https://diamondedit.co.za/sa-diamond-price-report-2026/

Harvard:

Mokoena, T., 2026. The SA Diamond Price Index, May 2026. [online] The
Diamond Edit. Available at:
<https://diamondedit.co.za/sa-diamond-price-report-2026/>
[Last verified 27 May 2026].

Methodology

Wholesale ZAR figures convert the Rapaport (RapNet) and Idex per-carat USD tape at the SARB daily mid-rate ZAR/USD across the data month (May 2026 mid R18.50, band R18.42 to R18.61). Retail figures come from anonymous walk-in observations across Sandton City, V&A Waterfront, Pretoria Brooklyn Mall, and Durban Gateway with a constant brief.

The 2019 to 2026 historical series uses annual average Rapaport + Idex lab-grown reports converted at the SARB monthly average ZAR/USD for that year.

Full methodology at /sa-diamond-price-report-2026/#methodology.

Update cadence

Next planned refresh: 1 July 2026 (v1.1). Subsequent refreshes quarterly. Each version is dated in the filename and the JSON version field. Old versions remain available at the dated URLs.

Changelog

Get notified of updates

RSS feed: https://diamondedit.co.za/rss.xml. Subscribe in any feed reader; new dataset versions appear as new entries.