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Our History


Perched high above the Napa Valley on the summit of Diamond Mountain, CONSTANT Diamond Mountain Vineyard is one of the area’s highest, oldest, and smallest wineries. Producing collectible wines since the early 1990s, the CONSTANT story is one of ingenuity, perseverance, and an unyielding commitment to quality.

The mountaintop land that would become CONSTANT Diamond Mountain Vineyard was first settled in 1895 by Andras Andrew Rasmussen, a Danish immigrant who learned to farm from his uncle in Omaha, Nebraska. After 15 years of working in the wine industry - at Talcoa Vineyard (now Hudson Vineyard in Carneros), as superintendent of Summit Vineyard and Winery, and studying viticulture under George Husmann at UC Davis – Rasmussen purchased 120 thickly forested acres at the very top of Diamond Mountain, cleared approximately 30 acres himself, and planted the first grapevines at the summit.

The vines were abandoned in the 1920s and 1930s due to Prohibition, and when Fred and Mary Constant purchased the vineyard in 1993 the land was overgrown and wild. Intent on becoming premium grape growers for the blossoming wine industry in the Napa Valley, Fred and Mary worked diligently to clear the land and re-establish the vineyard. They hired renowned architect Howard Backen to build a stunning house overlooking the valley floor with a full view of Mount St. Helena. Fred and Mary quickly realized that they had stumbled upon a unique and spectacular plot of land and, in addition to growing grapes for several of the best winemakers in the area, the Constants decided to make their own wine and build a winery on the estate. The first vintage was from 1993, but Fred and Mary did not feel that it was up to their standard, so it was never released. The first released vintage is from 1995 under the name CONSTANT Diamond Mountain Vineyard, with winemaker Philippe Melka at the helm. Celebrated winemaker Paul Hobbs took the reins in 2009 and continues to serve as Managing Director and Consulting Winemaker at CONSTANT to this day.

Fall 2016 brought change once again, and CONSTANT Diamond Mountain Vineyard entered a new chapter as Aries Liu and Sai You became the property’s caretakers. As Aries and Sai look to the future of the vineyard and winery, CONSTANT remains committed, now more than ever, to producing some of Napa Valley’s best Bordeaux varietals. CONSTANT wines are elegant and rich, at once powerful yet restrained. The unique microclimate at the very top of Diamond Mountain provides grapes with optimal sun exposure and elongated ripening periods, allowing Hobbs and his team to make exceptional wines composed of 100% varietal grapes, perfectly representing the stunning and unique mountain site in every bottle. Available by allocation only, CONSTANT wines remain some of the most sought-after in the Napa Valley.

Photogallery rendered here.