Theophilus on glyptics is too delightfully naïve for us to resist quoting his remarks.    From Wordnik.com.  [Arts and Crafts in the Middle Ages A Description of Mediaeval Workmanship in Several of the Departments of Applied Art, Together with Some Account of Special Artisans in the Early Renaissance] Reference

Constantinople was the only place where glyptics were understood and practised upon large hard stones in the early.    From Wordnik.com.  [Arts and Crafts in the Middle Ages A Description of Mediaeval Workmanship in Several of the Departments of Applied Art, Together with Some Account of Special Artisans in the Early Renaissance] Reference

Vasari speaks with characteristic enthusiasm of the glyptics of the Greeks, "whose works in that manner may be called divine.".    From Wordnik.com.  [Arts and Crafts in the Middle Ages A Description of Mediaeval Workmanship in Several of the Departments of Applied Art, Together with Some Account of Special Artisans in the Early Renaissance] Reference

The art of the lapidary, or science of glyptics, is a most interesting study, and it would be a mistake not to consider it for a few moments on its technical side.    From Wordnik.com.  [Arts and Crafts in the Middle Ages A Description of Mediaeval Workmanship in Several of the Departments of Applied Art, Together with Some Account of Special Artisans in the Early Renaissance] Reference

Such are heraldry, or armorial science; glyptics, which deals with engraved stones; ceramics, or the study of pottery in all its epochs.    From Wordnik.com.  [The Catholic Encyclopedia, Volume 4: Clandestinity-Diocesan Chancery] Reference

The same specialist in Oriental glyptics, says: "The efforts of some learned men to discover traces of a reciprocal influence have been fruitless.    From Wordnik.com.  [Scarabs The History, Manufacture and Symbolism of the Scarabæus in Ancient Egypt, Phoenicia, Sardinia, Etruria, etc.] Reference