Donations to support Tri-Valley Haven. The event is from 6:30-9 p.m., Friday, April 27 at Ruby Hill Winery, 400 Vineyard Ave. Pleasanton. The cost is $10 for Gem Society members, $15 for non-members and $10 for anyone under 21 years of age. Price includes a glass of wine, 2 barrel tastings, 1 slice of pizza, light snacks. Additional wine and pizza will be available for sale. Call 931-9463.