ovoid form with swimming fish and aquatic plants. engraved to the base 'Orrefors Sweden/Graal 1524/Edvard Hald. 6.30 in. height, the Graal glass technique was invented at Orrefors Glasbruk in Sweden, in 1916. The glassmakers creates a piece with different coloured layers of glass, allowsit to cool, then cuts a design in one of the coloured layers to create a pattern. Then they re-heat it and case it with more crystal, and expand it. Obviously, this is a very complex, time-consuming process. A variation of the Graal technique is Fishgraal, invented by Edvard Hald in the 1930s. A design is painted on the glass, a green layer in this case, with liquid bitumen. Then, all the green layer which isn't covered with the pattern is acid-etched away, so that the pattern stands out on a clear background. Then it is reheated to 400-500 degrees celcius and carefully covered with another thick layer of crystal. The name, Fishgraal, comes from the fact that the first collection featured fish designs.
- Engraved Glass - The method of decorating glass by marking the surface with a sharp intrument such as a diamond, metal needle or rotating cutting wheel. As pressure is applied to the surface, best results for engraving are achieved if the glass is of sufficient thickness. In the 19th century etching was used to decorate some table glassware that was too fine to take an engraving tool.
- Oviform /ovoid - The outline loosely resembling the shape of an egg.
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