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Pattern Profile: Almond, Cinnamon, Citrus (1979); Slate (1982); Heather (1983); Cobalt, Onyx (1984)
The Dimension IV product line was introduced late 1979 with Almond, Cinnamon and Citrus. These smartly banded patterns were the first to appear with the new narrow rimmed shape in dinner plates, luncheon plates, bread & butter plates and soup plates. Pyrex mugs with a new flared style were also part of the sets, and these were decorated with solid colours. Optional items available for separate purchase include dessert bowls, soup/cereal bowls, serving bowls and platters, but these had the usual coupe shape instead.
Slate appears to be a new addition in 1982, and Heather was introduced in 1983. The debut of Cobalt and Onyx seems to be 1984. Cobalt is quite different than the others in this line; it has three very thin equally-spaced blue bands on the rim. But some pieces in Cobalt, like bowls, may have just two bands.
 (l-r): Luncheon Plates: Cinnamon, Heather; Platter: Onyx; Dinner Plates: Slate, Citrus, Almond.
Citrus was discontinued in 1983, Almond in 1984. 1985 was the final year of production for the remaining patterns: Cinnamon, Slate, Heather, Cobalt and Onyx. In 1985 a new wider rimmed plate style was implemented for many new patterns and the narrow rimmed style of Dimension IV would be abandoned along with the flared Pyrex mugs.
For three of these patterns, the same coloured bands took on a new life with coupe plates in 1986 within the Livingware line. Chestnut is the coupe version of Cinnamon, Indigo is the coupe version of Slate, and Dusk is the coupe version of Onyx. Mugs made of Suprema were included in these sets, and another distinction of the new version is that the 10 oz and 18 oz bowls are decorated with just a single coloured band. There is one commonality between the old and new patterns: the platters and serving bowls appear to be the same, fully decorated with both coloured bands.
 Soup Plates: Cinnamon, Citrus. Dimension IV was the first product line to include 8½ inch flat-rimmed soup plates.
Colour Schemes:
Except where noted, these patterns have a white background and the decoration consists of one wide band and one narrow band on the rim. The dominant colour on the wide outer band is listed first.
Citrus - orange & bright yellow Almond - tan & light yellow Cinnamon (& Chestnut) - rust & tan Slate (& Indigo) - slate blue & grey Heather - green & pink Cobalt – 3 thin equidistant cobalt blue bands Onyx (& Dusk) - black & grey (with thinner bands) (Photo: 10 oz dessert bowl, Cinnamon; 18 oz soup/cereal bowl, Slate.)
Corelle Dinnerware:
Rimmed Plates (narrow): Dinner Plate (10¼”) Luncheon Plate (8½”) Bread & Butter Plate (6¾”) Flat Rim Soup Plate (8½”)
Dessert Bowl (10 oz 5 3/8”) Soup/Cereal Bowl (18 oz 6¼”) *
1 Qt Serving Bowl (8½”) 2 Qt Serving Bowl (10¼”) Oval Platter (12½”)
Pyrex Mug (flared, solid colour, 9 oz): Citrus (orange) Almond (tan) Cinnamon (rust) Slate (medium slate blue) Heather (green) Cobalt (dark cobalt blue) Onyx (black)
* - It is questionable whether 18 oz bowls were ever made for Heather or Cobalt, but 10 oz bowls exist. These bowls do show the full pattern.
 Top row: Citrus, Almond, Cobalt. Bottom row: Cinnamon, Slate, Onyx.

Cobalt is depicted here in a 1985 catalogue image. The photo implies that all sizes of coupe bowls have 2 bands, while platters have 3 bands. Dinner and luncheon plates are known to have 3 bands. At top right are bread & butter plates with 2 bands, and this size of plate also has been seen with 3 bands. The reason for this anomaly is not clear.
Although no ovenware or nesting bowls in opal Pyrex were made for the Dimension IV patterns, there are a few Pyrex items which share the same colour schemes and pattern names. Dating to 1981, the Baker in a Hammock was meant to co-ordinate with Almond, Cinnamon and Citrus. During the early to mid 1980s, Store 'N' See canisters were made with solid coloured tops in Cinnamon, Slate and Almond Mocha.
Related Articles:
Pyrex Flared Mug (1979) Pattern List: Soup Plates Plate Styles: Narrow Rimmed Forget-Me-Not (1983)
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