The popularity of Fire-King's Jade-ite, an opaque green glass produced from the late-1940s through the late-1960s, got quite a bit of fuel from Martha Stewart in the mid-1990s when a kitchen lined with this dinnerware and utilitarian kitchen glass first appeared in her magazine spreads.

That combined with a glimpse of the collection on her television programs from time to time led to quite a Fire-King collecting frenzy.

Today, demand for this glass isn’t as high you can find it fairly reasonably piece by piece through online auctions.

However, some pieces of green Restaurant Ware are truly hard to find and still command quite an audience with glass enthusiasts.

Anchor Hocking made more Fire-King branded wares than Jade-ite -- much more, in fact.

The square Charm dinnerware pattern, which was produced in Jade-ite in limited quantities, came predominantly in opaque pale blue Azur-ite, Forest Green and Royal Ruby.

Most of these brightly colored dishes were tagged with foil stickers that have long worn away but the rounded square shape provides easy recognition for glassware shoppers when they aren’t marked.

A good book to have on hand when identifying this type of glass is by Gene Florence (now out of print but still available through online booksellers).

This guide shows all the most popular patterns, pieces and colors, along with fairly accurate pricing information in most cases.

Florence's reference wouldn't be complete without including Sapphire Blue ovenware.

Anchor Hocking manufactured this pale blue glass that qualifies as Fire-King from 1942 through the '50s, although most pieces aren't marked due to the pattern molded into the glass.

Once you learn to recognize the light blue color, however, there’s no mistaking it.

It’s also worth mentioning that dinnerware pieces produced in Sapphire Blue are referenced as “Philbe” and this is the same color much of Anchor Hocking’s “Bubble” pattern dinnerware.