Boulle Inlay
Tortoiseshell
‘Boulle Work’ showing the depth mottled tortoiseshell gave to André-Charles Boulle’s Art. Pewter inlay is in center with brass right and left.
Tortoiseshell was used in thin sliced inlays onto wood and is today an important reference point with regard to ‘Boulle Work‘. Despite tortoiseshell’s rarity and cost, its durability, organic warmth and mottled-red aesthetics made it particularly apt for exotic woods such as ebony. This is because it gives a sense of depth to ‘Boulle Work‘. The initial processing of tortoiseshell involves separating the layers of the scutes from the live animal’s carapace by heating and softening the plates in boiling them in salt water and thereafter flattening them under a press. Although two pieces could be fused together by use of a hot iron, great care had to be taken not to lose the colour. Finishing and polishing was done using various techniques.
Pewter
Pewter or brass inlay on tortoiseshell was known as première-partie, while tortoiseshell inlay on brass or pewter was contrapartie. For an even more sumptuous effect, mother-of-pearl, stained horn and dyed tortoiseshell would be included in the design.