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Diamond Mountain District AVA
Diamond Mountain District AVA
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Diamond Mountain District AVA
Diamond Mountain District AVA
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Diamond Mountain District AVA
Diamond Mountain District AVA

Images Courtesy of Suzanne Becker Bronk


The Diamond Mountain District AVA is a Napa Valley Appellation located in the northwestern corner of Napa County. The name Diamond Mountain District was inspired by the reflective shards of volcanic glass material found throughout the soil.





Appellation Details

The Diamond Mountain AVA is a sub appellation of the Napa Valley AVA located in northwestern Napa County. The Diamond Mountain District rises up into the east side of the Mayacamas mountains, southeast of Calistoga and is named after the prodigious amounts of obsidian and volcanic glass present in the volcanic soils.

The Diamond Mountain District AVA benefits from its relatively higher elevation by facing less extreme heat than the valley floor and typically remains frost-free during the winter months. Though the Diamond Mountain District lives in the warmer northern end of Napa Valley, the Diamond Creek river drainage allows a channel of cool air to penetrate the hillside, prolonging the growing season and mitigating late season heat spikes. Furthermore, as the majority of vineyards are east-facing, they are protected from the hot afternoon sun. These factors, along with the elevation and meager soils, combine to make for powerful ripe wines that are rich in sturdy tannins and bright acidity.

Cabernet Sauvignon is the dominant grape. The soils are primarily volcanic in origin though aren’t as red in hue as found regularly across the valley. As with Mount Veeder, much of the terrain of Diamond Mountain is too severe to be cultivated, so the majority of the mountain remains covered in thick redwoods.

Elevation:

  • 400 to 2,200 feet (122 to 671m)
  • The Diamond Mountain District is located at a higher elevation than many Napa Valley Appellations, which results in less cool fog forming from the influence of the San Pablo Bay. The elevation also results in more exposure to sunlight, without the heat of the lower valley.

Soils:

  • Residual uplifted soils of volcanic origin
  • Reddish and very fine-grained, even gritty in texture
  • Composed of both weathered sedimentary and volcanic origin soil
  • The volcanic origin soil is very porous, allowing it to cool quickly despite the increased sunlight

Climate:

  • Moderately warm temperatures with lower highs (90°F or 32°C) and higher lows (50°F or 10°C)
  • Temperatures 10° to 15°F cooler than valley floor in summer
  • Mostly located above the fog line
  • Low diurnal change compared to other Napa Valley AVAs
  • Summer temperatures rarely above 90°F (32.2°C)

Rainfall:

  • Up to 55 inches (140 cm) annually

Principal Varieties:

  • Cabernet Sauvignon
  • Cabernet Franc



Diamond Mountain District AVA History

Jacob Schram

Jacob Schram

The history of Diamond Mountain District as a wine growing area begins in 1862, when Jacob Schram purchased property on the east side of Diamond Mountain for the purposes of planting grape vines. He had previously worked as a barber in White Sulpher Springs and Napa City before moving to Diamond Mountain for his health. Schram and his wife went into the fields themselves and planted a small section of grapevines. From this humble beginning, "Schramsberger" wine went on to become one of the most recognizable brands in the world. To this day Schramsberg winery still bears his name.

Similar to other appellations in Napa Valley, wine production in Diamond Mountain District diminished during the outbreak of Phylloxera in the 1890's and then Prohibition in the 1920's. However, in the mid-1960's wine production returned to Diamond Mountain when the old Schramsberg property was purchased by Jack and Jamie Davies. Other winemakers returned as well in through the 1960's and 1970's, with Al Brounstein, Rudy Von Strasser and Andre Tchelistcheff developing vineyards in the area.




Quotes

"Diamond Mountain District wines feature great tannin structure and rather than big red fruit like raspberry or blackberry, there are lovely blue fruit characters, plum, currant, cherry, fruit flavors with wonderful structure and minerality."
- Dawnine Dyer, Dyer Wine




Notable Wines sourced from Diamond Mountain District AVA

Baldacci Family Vineyards
Baldacci Family Vineyards 2021 Cabernet Sauvignon

The Diamond Mountain District Cabernet Sauvignon expertly balances power and elegance. It unfolds with aromas of red berries, underscored by subtle notes of dark chocolate and cedar. On the palate, black currant and ripe plum flavors are accented with hints of black tea and a touch of spice. The wine’s remarkable structure is supported by firm tannins and a lingering finish, showcasing the distinctive terroir of the Diamond Mountain District. Its complexity and depth make it a standout choice for those seeking a wine with both immediate appeal and age-worthy potential.

View Winery Profile

HALL
HALL 2011 'HALL 'Diamond Mountain'' Cabernet Sauvignon

HALL ' Diamond Mountain District' Cabernet Sauvignon

View Winery Profile

The Vice
The Vice 2018 'The Spectors' Cabernet Sauvignon

100% Cabernet Sauvignon, 100% French Oak, 100% Diamond Mountain district of Napa. Unfiltered and Un-fined.

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Davies Vineyards
Davies Vineyards 2022 'J. Davies Estate' Cabernet Sauvignon

The vineyard blocks, totaling 46 acres, are laid out in four isolated pockets ranging from 500 to 1000 feet in elevation. They include the two Schram sections, Napa Valley’s first hillside vineyards, originally planted in 1862 by Jacob Schram, the McEachran parcel, first planted by Colin McEachran in 1878, and the Claes parcel, dating back to 1984. These are the southernmost vineyards in the Diamond Mountain District AVA. Flanked by two cool creek canyons (Nash Creek to the north and Ritchie Creek to the south) and surrounded by compact coniferous and deciduous forests, the vines here produce late-ripening, richly concentrated fruit with average yields of just two tons per acre.

View Winery Profile

Diamond Mountain District AVA Resources and References

  1. "§9.166 Diamond Mountain District" (Title 27: Alcohol, Tobacco and Firearms; Part 9 — American Viticultural Areas; Subpart C — Approved American Viticultural Areas). Code of Federal Regulations. Retrieved October 31, 2007.
  2. "Diamond Mountain District Viticultural Area (99R-223P)". Federal Register. Office of the Federal Register, National Archives and Records Administration. 66 FR (106): 29695–29698. June 1, 2001. Retrieved June 28, 2011.
  3. The History of Diamond Mountain Wine Production. Diamond Mountain Wine History. (n.d.). Retrieved September 29, 2022, from https://www.calwineries.com/explore/regions/napa-valley/diamond-mountain/history
  4. Pitcher, Steve. "Mining Jewels on Diamond Mountain". The Wine News. No. June/July 2005. Archived from the original on September 30, 2011. Retrieved June 27, 2011.
  5. Miller, Fran "Diminutive Yet Dynamic". Napa Valley Life Magazine, April 8, 2021. Retrieved Sep 8, 2022.
  6. Palmer, Lyman L.; Wells, Harry Laurenz (1881). History of Napa and Lake Counties, California. Slocum, Bowen & Company. ISBN 978-1363000555.
  7. Weber, Lin (1998). Old Napa Valley: The History to 1900. Wine Ventures Publishing. ISBN 9780966701401.

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