Roman Glass Bowl 1st century B.C. The J. Paul Getty Museum.

Mold-blown glass flask with janiform decoration

Roman, 1st century A.D.

J. Paul Getty Museum

This first- or second-century glass statuette of Venus has very thick weathering layers which have been lost in some areas.

Glass jar with marvered trails Roman, Syro-Palestinian 5th century CE or later (via The Metropolitan Museum of Art)

aryballos, Eastern Mediterranean (possibly Egyptian), c. 6th-4th century BCE, glass

currently in the collection of the Yale University Art Gallery, accession no. 1955.6.237

Glass pomegranate

Greek, 2nd century BC

I'm always shocked when ancient glass survives.

Perfume Sprinkler (Qumqum)

11th–mid-13th century

This long-necked glass bottle with a ring-shaped body would have been used for disseminating rosewater or another aromatic substance mixed with water. Rosewater was used for cooking and as a perfume to be sprinkled on guests at the end of a meal. The production of such sprinklers in Syria from the late eleventh to the mid-thirteenth century reflects another aspect of courtly manners in which attractiveness in all its forms was prized.

museum of ancient glass in zadar

Roman Glass Bowl 1st half of 1st century CE Early Imperial, Julio-Claudian

Glass bottle with handles

Roman, 1st century A.D.

Saint Louis Art Museum

Glass beaker signed by Jason, Roman, Syro-Palestinian, mid–1st century. Metropolitan Museum, NYC

The inscriptions read "Jason made (me/it)" on one side and "May the buyer be remembered" on the other.

I’m pretty sure you could buy something more or less identical to this today at any museum gift shop. 

[ID: A very modern-looking glass vase, with a cylindrical body ending in a narrower neck; glass handles are attached to the flared mouth of the vase and the “shoulder” of the body, and there is delicate fluting on the body, with a small glass “cord” wrapped around the neck.]

mosaic bead necklace, glass, eastern Mediterranean (possible Greek or Roman), c. 1st century BCE-1st century CE

currently in the collection of the Getty Museum, accession no. 2003.259

The sheer amount of concentration and sticktoitiveness involved here is simply astounding.