The Wine Made with Patience & Precision
We pick by taste, keep lots separate, and let time do its work. That patience yields energetic, age-worthy wines with unmistakable mountain character.
60 Acres
on Diamond Mountain
High on the northern slope of Diamond Mountain, Theorem Vineyards sits at 1,100 feet above sea level—where sun, stone, and sky work hand-in-hand to create something extraordinary. Here, volcanic soil meets golden light and cooling winds, crafting a landscape as bold and expressive as the wines it yields.
Tours
&
Tasting
We offer custom, private experiences with panoramic views, stunning architecture, aromatic gardens, and wonderful wines.
Experience the Magic of Diamond Mountain
Theorem Vineyards is a place where time slows and the land speaks—where volcanic soils, mountain air, and golden light converge to shape something extraordinary.
Together with winemaker Andy Jones, we craft wines that reflect the soul of our estate. Our philosophy begins in the vineyard: only the most exceptional fruit is chosen, and only what’s worthy finds its way to bottle. We take a thoughtful, restrained approach—allowing the wine to express itself with purity, elegance, and truth.
Featured Publications
Theorem Vineyards has been honored with numerous features in highly-regarded wine, architecture, and design magazines.
Do You Hold
the Key?
Explore More of Theorem
Whether you’re exploring our Diamond Mountain vineyards or lacing up your boots for an excursion at Theorem Ranch, one thing is certain—you will have a life-changing experience.
Visit Theorem Ranch
Set within one of Calistoga’s most storied buildings, ILORA is more than a restaurant—it’s an experience meant to linger. Each visit is designed to feel like a once-in-a-lifetime moment, where history and modern refinement meet at the table. Guests leave dreaming of their next return, knowing the only way to relive it is to experience it all over again.
Where Theorem unwinds. Expect craveable food, thoughtful drinks, and a relaxed Napa vibe—served with our signature hospitality. Come on over, pull up a chair, and stay awhile.
Beyond the Vines, a Story Unfolds
Join us where time slows, and truth is poured.