Pattern Profile:
Iris, Summer Mist (1984), Spring Pond (1985)  

Iris and Summer Mist were the newest additions to the CornerStone Collection in 1984, and they would be joined by Spring Pond mid-1985.  The multi-coloured designs adorn the centre of the plate, and coloured bands appear on the rims.  Bowls and saucers are decorated only with coloured bands, and Iris and Summer Mist share the same sage green banded pieces.  Spring Pond has three bands: green, pink and white.

The CornerStone shape of the plates extends to the bowls and saucers, as well as the platters and serving bowls for these three patterns.  Eventually platters and serving bowls would return to the ordinary coupe shape for CornerStone patterns, and this is true for Spring Pond.  These coupe pieces might have been made for Summer Mist too.

Initially the sets came with Centura cups, and stoneware cups also exist, but they are less likely for Iris.  Suprema cups are a definite possibility for Spring Pond, but this point is unknown for Summer Mist.  The first style of cream & sugar set was made of Centura with a beige plastic flat-top sugar lid.  After 1986 this was replaced by a stoneware set and the sugar lid was also made of stoneware with a tall knob.

Summer Mist 20 piece set.  Image from 1985 brochure.

Iris was discontinued mid-1986.  Of these three patterns, Spring Pond was available the longest, and 1992 appears to be its final year of production.  Summer Mist was dropped earlier, between 1987 and 1992; an exact ending date is not known. 

Iris luncheon plate. 

Corelle Dinnerware:

CornerStone Rimmed Plates, Bowls & Platters:
Dinner Plate (10¼")
Luncheon Plate (8½")
Bread & Butter Plate (7¼")
Saucer (6¼") *

Centura CornerStone Cup (7 oz) - all
Stoneware CornerStone Cup (7 oz) - possibly not for Iris
Suprema CornerStone Cup (7 oz) ‡

Centura CornerStone Cream & Sugar - all
Stoneware CornerStone Cream & Sugar - not for Iris
   
Dessert Bowl (10 oz 6¼") *
Soup/Cereal Bowl (18 oz 6¾") *
1 Qt Serving Bowl (8½") *
Oval Platter (12½")

1 Qt Serving Bowl, coupe (8½") * ‡
Oval Platter, coupe (12½") ‡

‡ - only for Spring Pond, Summer Mist also possible.

* - coloured bands:
Iris, Summer Mist = two sage green bands;  Spring Pond = green, pink, white.

Others:

No glassware is known to exist for these three patterns.  Thermal carafes in a one quart size were made overseas and sold under the Corning brand.  These were available in Iris and Spring Pond, Summer Mist is undetermined.

Related Articles:

CornerStone Cup (1983)
Plate Styles: CornerStone
Bayscape, Sandscape, Skyscape (1985)

FIRST CornerStone Profile.