Silverthorn

Robertson Chardonnay and Pinot Noir from South Africa's limestone country.

Silverthorn operates in Robertson, a limestone-rich corner of the Breede River Valley in South Africa's Western Cape. The winery's portfolio centers on Chardonnay and Pinot Noir—grapes that thrive in Robertson's cool-climate conditions, where diurnal temperature swings and mineral-laden soils shape wines of precision and depth. The Jewel Box Cuvée Kappa Crucis, a Pinot Noir and Chardonnay blend, stands as the winery's flagship expression. Alongside it, the Cape Winemakers Guild Big Dog showcases Chardonnay's range, while The Green Man offers a more restrained take on the same variety. Decanter and Wine Advocate have both assessed the winery's output, reflecting the technical caliber of its work. Robertson's reputation for white wines and cool-climate reds finds clear expression in Silverthorn's focus.