ORANGE Greenleaf Essential Oil Named after the city of Valencia in Spain, The Valencia hybrid was created by a citrus farmer in California in the mid-19th century. Orange Valencia Essential Oil is cold-pressed from the peel, and the aroma is sweet and tangy. The oil is celebrated for creating uplifting and invigorating effects. Each Greenleaf essential oil bottle holds 0.5 fl oz of 100% pure, natural, and undiluted essentials oils, and proceeds from this item are donated to organizations working to break the cycle of human trafficking.