Duncan Crystal Glazes

    Duncan Crystal Glazes are nontoxic gloss glazes that contain glaze crystals that melt and flow during the firing. Each of the Crystal Glazes are different, some glazes contain crystals of just one color, while others contain several different colored crystals. These glazes are nontoxic, but should never be considered dinnerware safe as crazing may develop due to the presence of the glaze crystal. Available in 42 total colors split into several groups including the Original Crystal Glazes and the Earth and Sky Crystal Glaze Series.

    All Duncan Crystal Glazes are available in 4 oz sample sizes and most are available in 16 oz (pint) bottles. Dogwood Ceramic Supply stocks all available sizes and colors.

    The new Duncan Crystal Glazes for 2010 are available exclusively in wide mouth 8 ounce (half-pint) bottles. 

Technique information at the bottom of this page

Duncan Color Discounts

All color products in ALL sizes can be combined to obtain the quantity discounts.

Some limitations may apply.  See discount notes at the bottom of the Duncan Color Catalog.

All Colors of Duncan Crystal Glazes

$5.45 US Suggested Retail for 4 ounce Duncan Crystal Glazes

price as low as $2.73 per jar after discounts are applied

16 oz size of Duncan Crystal Glazes

$16.95 US Suggested Retail for pint bottles of Duncan Crystal Glazes

Colors available in pint size are marked with *.

price as low as $8.48 per pint bottle after discounts are applied

Duncan Crystal Glazes

CR 901 Waterfall *	CR 902 Night Sky *	CR 903 Emerald Falls *	CR 904 Fudge Marble *	CR 905 Blueberries *	CR 906 Peppered Raspberry *	CR 907 La Fiesta *	CR 908 Monet's Garden *
CR 909 Moss Green *	CR 910 Forest Moss *	CR 911 Ocean Mist *	CR 912 Spring Meadow *	CR 913 Cranberry Frost *	CR 914 Grape Splash *	CR 915 Night Frost *	CR 916 Holly Berries
CR 917 Caramel Latte	CR 918 Cherry Blossoms *	CR 919 Milky Way *	CR 920 Water Lilies *	CR 921 Glacier Storm *		CR 20095 Blue Enamelware

Duncan's Earth & Sky Crystal Glazes

CR 850 Cumulus Clouds *	CR 851 Eternal Galaxy *	CR 852 Solar Flares *	CR 853 Sailors Delight *	CR 854 Outer Space *
CR 855 Water Lily Marsh *	CR 856 Ancient Woodland *	CR 857 Alpine Meadow *	CR 858 Polynesian Lagoon *	CR 859 African Savanna *

Click on the Earth & Fire Crystal Glazes to display a full size digital photo.

Convenient 8 ounce size Crystal Glazes:

Special 8 oz (half-pint) bottles of Duncan Crystal Glazes

$10.15 US Suggested Retail for 8oz half-pint bottles of Duncan Crystal Glazes

Colors available only the 8oz half-pint size

price as low as $5.08 per 8oz bottle after discounts are applied

CR 922 Eruption	CR 923 Raspberry Lemonade	CR 924 Wildflower Bouquet	CR 925 Independence Day	CR 926 Sandy Beach
CR 927 Hawaiian Sand	CR 20075 Dalmatian	CR 20088 Blueberry Ice	CR 20089 Raspberry Ice	CR 20091 Harvest Time#

Crystals™ Glazes

Crystals™ Glazes

    Duncan Crystal™ Glazes consist of a base glaze, that usually matches an Envision™ Glaze in color, with various colored crystals added.  When fired these crystals produce unique results every time.  As shown on the vase above, Crystal Glazes can move during the firing.  The amount of movement depends upon the size of the individual crystal, the slope of the piece, as well as the firing temperature.

    All Duncan Crystal™ Glazes are rated nontoxic, however only CR 905 Blueberries is considered dinnerware safe. The other Crystal™ Glazes are not considered dinnerware safe as the crystals in the glaze may cause crazing (fine spider-web cracks in the glaze surface), which also means that Crystal™ Glazes are not recommended for the interior of a vessel that may contain water.  On the interior of a vase it is recommended that the matching or complimentary Envision™ Glaze is used to maintain waterproof food safety.

    Crystal™ Glazes are a very versatile decorative glaze.  Duncan Crystal™ Glazes may be used in conjunction with other Crystal™ Glazes, or in combination with satin or other gloss glazes.

Basic Instructions:


1. Stir product thoroughly to suspend the crystals that may have settled at the bottom of the jar.  Note: Mixing instructions depend upon the crystal size, refer to the jar label for complete instructions.

2. Apply 3 flowing coats to shelf cone 04 bisque.  Keep larger crystals sparse on the sides near the bottom of the piece to prevent the crystals from flowing off the piece and onto the kiln furniture.  Keep all crystals off the bottom of the ware, or edges of boxes to prevent an uneven bottom.

3. Stilt and fire to shelf cone 06.  Allow slightly more space between pieces in the kiln as some bubbling of the crystals may occur during the firing.

Project Hints:

    Duncan's Crystal Glazes are wonderful for children and classroom.  Adults may desire to move beyond the color choices made by Duncan and experiment with Spectrum's Glaze Crystals to achieve a virtually unlimited color combinations.

Duncan Color Catalog

12590 Dedeaux Road
Gulfport Mississippi, 39503
Telephone (228) 831-4848        Fax (228) 831-3111

Showroom Business Hours:

Monday, Tuesday, Friday and Saturday 10AM to 5PM
Thursday 1PM to 6PM

Closed Wednesday and Sunday

     Duncan Crystals Glazes for low fire application. The glaze crystals flow during firing to product truly unique pieces than can never be duplicated. Duncan Crystal Glazes are nontoxic.