Since 1912. One Pound about 4-1/2 cups. Diamond Nuts are made for homemade. Since 1912 when we were started by a group of California walnut farmers. Diamond of California was on a mission to bring the bounty from California's walnut farms to America's tables. From the beginning, we sought out the very best with the knowledge that Diamond nuts would be used in treasured and new family recipes. Farm to table flavor. Our Farmers: In bags of Diamond walnuts, some walnuts might be from the harvest at the Hester farm. Husband and wife Gary and Anne Hester continue the four generation family tradition, growing walnuts for Diamond on the family farm in Visalia, California. Hester family, we're glad that you have been with us for all of these years.