The Joy of Life, Roman Woman Intaglio, Carved Agate, Coin Charm Amulet Pendant Necklace with Diamond, 24kt Gold and Silver by Prehistoric Works of Istanbul, Turkey. Diamond - 0.02cts. These coin amulet pendant pair well alone or with other coin pendants or with miniature pendants. Measures 13mm x 24mm (medium), chain options available. Intaglio is a technique which dates back to antiquity and is still in use at present. Patterns, designs or – more frequently – images are carved or engraved in gemstones leaving a hollow impression in the untouched background. This style of carving is the opposite of the cameo technique.