The Glyptography means the art of engraving or carving a piece of seal or stone by inscribing images or sculptures on it. It is an old technique that used to be performed from the ancient times.
The great use of the above-mentioned technique is also described in the history books or archaeological discoveries. The historical evidences are abundant to prove that this technique has grown in proportion to human civilization.
In some great civilization of the ancient time such as Babylon, Sumeria, Greek gem engraving or carving technique were used.
However, unlike today, where this technique is widely being performed on almost every stone, whereas, in ancient time gem engraving used to practice on some specific stones like Agate, Jasper, Amethyst, and Onyx.
In other words, engraving means carving in the intaglio that prints the cut or design in which a stone has to be transferred.
The “Intaglio” technique offers the background image of the stone which can be used by a gem cutter to refer to gem carving activity. Another technique which is known as cameo captures the head or top image of the stone.
It is also majorly being used for gemstone engraving technique. The cameo technique to engraved gemstone was widely being practiced at the time of Greek. The signet ring was craved using cameo procedure. The cameo offers light color image over a dark background.
The Glyptic art is an inscription technique which is majorly being used to carve small gemstone or for archaeological inscriptions. Along with stone, this technique was practiced upon cylindrical seals.
The technique of gem carving:
To carve a gemstone or seal the abrasive powder and hand drill machines are used. The person who cuts the gem is known as a gem cutter who must have at least three years of experience in this field.
However, in earlier days due to lack of technical advancement, therefore they used to carve a seal with their hands; unfortunately, it was hard to get the better details from this technique.
Besides this, in ancient times there is no such evidence that entails that they were using magnetic glasses to perform this activity. Nowadays, due to a major advancement in the technique, the job of intaglio or carving has become easy.
To perform intaglio over a seal, the gem cutter uses a flat wheel edged wheel on a drill for intaglio work. Furthermore, to increase the color and shine of the stone today heat and color treatments such as dyes are widely being performed over the stones.