1920's Portrait Colour Change Sapphire Intaglio Seal hunting More so to the smaller

More so to the smaller pendant

A stylish Victorian bangle studded with square "nails"

with the stone resting in a fine millegrain bezel setting with small engraved details

These are a early example of the technique

The head displays the whole gamut of retro intricacies

1920's Portrait Colour Change Sapphire Intaglio Seal hunting More so to the smallerDATE: Art Deco, c. 1920 A fantastic colour change sapphire (synthetic) seal, with a intaglio carving to the base. It's carved with a ladies portrait and the stone changes from a bluey purple to a turquoise green when moved from electric light to daylight. It remains in great condition and dates to the Art Deco period, circa 1920. Colour change gemstones possess the ability to appear as two completely different colours depending on the type of light