Just as with their other popular etched patterns, Cambridge put their Diane etch #752 on several stemware lines, the #3122, #3106, #1066, #3575 (Stradivari), and #7666. (Replacements shows a few more stem lines.) I’ve had a couple pieces in the #3122 line which is likely going to be the easiest for you to find. Cambridge used it throughout the 25 years they made Diane stemware.
Line 3122 has a series of nubby balls and ovals on the stem and a smooth, flared bowl. It’s quite an effective combination with the design of clasping hands and flower swags. You might possibly see #3122 pieces in colored glass but Diane is primarily crystal.
Look for a full set of stemware in #3122 Diane, everything from the water, wines and sherbets to footed juice and parfait stems, plus there are cocktail stems, cordials, oyster cocktails and even multiple variations of some of these.
Cambridge stem line #3106 has a plain stem and a round bowl. I’ve never seen this stemware with Diane, a pity since it is a lovely combination. Cambridge made the cordial, brandy, pousse-cafe (all three are tiny and hold 1 ounce or less), wine, sherbet, saucer champagne, two water goblets and special stems for creme de menthe and and sherry.
Line #1066 has to my eyes a heavy look with a large textured ball and curved hexagonal stem and rounded bowl. Cambridge produced a full set of stemware on this line too.
Line #7966 (Trumpet) has a smooth, triangular shaped bowl that rises directly from the stem. My Coe Elegant Glass book mentions a Diana sherry in this shape but I didn’t find a photo.
The last stem we’ll show is #3575, often called Stradivari because it resembles a violin. None of my reference books call out a full set of stems in this shape beyond the usual water, wine, sherbet, cocktail and juice.
Besides the stem line above, Replacements shows Diane on Line 3130, which has vertical ribs on the rounded stem and a curved bowl, and Line 3500 which has nubby balls and notches on the stem and #7801 which is plain with a round bowl and smooth stem.