The pattern is called Aurora Borealis. It's in perfect condition. There are no chips or cracks, no mineral deposit or stains. Any unusual white or dark spots shown in the photos are from camera glare.
This will make a great accessory item to any Victorian home. The item "Jefferson Blue Opalescent Aurora Borealis Novelty Vase" is in sale since Sunday, October 5, 2014. This item is in the category "Pottery & Glass\Glass\Glassware\Opalescent".
The seller is "ainventor" and is located in Gibsonton, Florida. This item can be shipped worldwide.