Antique mother of pearl cameo brooch / pendant of a lady in profile

Antique mother of pearl cameo brooch/pendant depicting a lady in profile with beautiful lustrous hues. The brooch/pendant is circa mid to late 19th century and the cameo is of that period if not older. Unmarked but setting likely gold-filled.

Price marked at $300 AUD.
Measurements: 4cm width, 4.5cm length.
Excellent antique condition, some light wear overall commensurate with age. Rollover clasp which may have been a later replacement.