Stoneware Crystals
Mayco’s Stoneware Crystal glazes are a unique line of glazes that contain colorful crystals in the glazes themselves that are designed to melt and bloom during the firing. These crystals add variation in color, finish, and movement to the glazes that you already know and love! All of our Stoneware Crystal glazes begin with a base glaze; most of the base glazes can be found in our other Stoneware Glaze lines.
SW-116 - Pint
Cone 6 oxidation (larger image): Robin’s Egg is a greenish-blue matte glaze that contains a sand-colored crystal. As the crystal melts, a small sandy-brown bloom will appear in the glaze, producing a mottled, textured finish.
Cone 10 reduction (smaller image): Semi-gloss finish with variegated blue/light blue and crystals.
TIP: SW-105 Frost Blue is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-105 Frost Blue with a third coat of SW-116 Robin’s Egg.
Wood and soda firing results will vary.
SW-117 - Pint
Cone 6: Honeycomb is a variegated brown matte glaze that contains a sandy-brown crystal. As the crystal melts it creates glossy blooms that can produce yellow mottling in the glaze, producing a textured fired finish.
Cone 10: Color darkens.
TIP: SW-103 Sisal is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-103 Sisal with a third coat of SW-117 Honeycomb.
SW-118 - Pint
Cone 6: Sea Salt is a white matte glaze that contains a sage green crystal. As the crystal melts, green blooms appear in the glaze, producing a foamy, textured fired finish.
Cone 10: Base glaze turns pale lavender/gray. Crystals are mint green.
TIP: SW-106 Alabaster is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-106 Alabaster with a third coat of SW-118 Sea Salt.
SW-146 - Pint
Cone 6: Aurora Green produces a mottled aqua gloss glaze with light brown and large black crystals. As the crystals melt, bursts of blue and brown will develop.
Cone 10: Color changes to a variegated pink/blue/green. Crystals become less pronounced.
TIP: SW-108 Green Tea is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-108 Green Tea with a third coat of SW-146 Aurora Green. Due to the large sized crystals in Aurora Green they often reside in the bottom of the glaze; be sure to stir well or pour the glaze out onto a plate to make them more accessible.
Wood and soda firing results will vary.
SW-148 - Pint
Cone 6 oxidation (larger image): Lime Shower is formulated to produce a vibrant chartreuse gloss glaze with dark green and white crystals. Light coats will produce a semi-transparent finish in the base glaze with fewer crystals. Use three or more coats to produce an opaque green float with more saturation of crystals. At cone 5, this glaze will produce a matte sepia finish with little breaking over texture.
Cone 10 reduction (smaller image): Color becomes less vibrant. Crystals melt.
TIP: SW-253 Green Opal is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-253 Green Opal with a third coat of SW-148 Lime Shower.
SW-150 - Pint
Cone 6 oxidation (larger image): Celadon Bloom is a turquoise semi-transparent gloss glaze that contains a white crystal.
Cone 10 reduction (smaller image): Color lightens. Crystals remain.
TIP: SW-201 Turquoise is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-201 Turquoise with a third coat of SW-150 Celadon Bloom.
SW-153 - Pint
Cone 6: Indigo Rain is a matte white glaze that contains a two-toned purple and violet crystal. As the crystal melts, a purple crystal with violet specks appears. The glaze has a soft subtle beauty.
Cone 10: Color darkens to variegated light gray/purple. Crystals melt.
TIP: SW-106 Alabaster is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-106 Alabaster with a third coat of SW-153 Indigo Rain.
SW-154 - Pint
Cone 6: Shipwreck is an aquamarine gloss glaze that contains an iron crystal. As the crystal melts, a small iron speck appears. The glaze appears mysterious like underwater footage.
Cone 10: Color darkens.
TIP: SW-212 Peacock is the base glaze.For a lighter crystal effect, you may try applying two coats of SW-212 Peacock with a third coat of SW-54 Shipwreck.
SW-155 - Pint
Cone 6 oxidation (larger image): Winter Wood is a matte white glaze that contains a variety of brown crystals that melt.
Cone 10 reduction (smaller image): Color changes to a translucent golden brown.
TIP: SW-106 Alabaster is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-106 Alabaster with a third coat of SW-155 Winter Wood.
SW-156 - Pint
Cone 6 oxidation (larger image): Galaxy is a semi-transparent charcoal colored gloss glaze that contains a three-tone white, orange, and blue crystal. As the crystal melts, a brilliant bloom of white, orange, and blue appears. The glaze is reminiscent of a star being born.
Cone 10 reduction (smaller image): Crystals and base showcase more blue hues. Crystals melt.
TIP: SW-209 Charcoal is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-209 Charcoal with a third coat of SW-156 Galaxy.
SW-170 - Pint
Cone 6: Blue Hydrangea is a blue floral-inspired glaze that contains yellow and white crystals. As the crystals melt, large white blooms and smaller yellow blooms appear in the glaze.
Cone 10: Color changes to blue. Crystals fade slightly.
SW-171
Pint - 16oz
Cone 6: Enchanted Forest is a dark charcoal gloss glaze that contains small yellow and medium-sized green crystals. As the crystals melt, a variety of yellow and green blooms appear.
Cone 10: Base glaze turns dark blue, yellow crystals turn white and green crystals turn blue.
SW-176
Pint- 16oz
Cone 6: Sandstone is a matte, off-white glaze that contains a variety of brown crystals that melt during the firing. Thicker application and heavy crystal concentration will produce more glossy blue/purple variation.
Cone 10: Color darkens. Glossy blue/purples become more prominent.
TIP: SW-172 Macadamia is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-172 Macadamia with a third coat of SW-176 Sandstone.
Wood and soda firing results will vary.
SW-179
Pint - 16oz
Cone 6 oxidation (larger image): Muddy Waters is a matte brown glaze with crystals that melt into a glossy blue. Heavier crystal application will produce more color variation.
Cone 10 reduction (smaller image): Glossy blue becomes more prominent. Increased movement.
TIP: SW-174 Leather is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-174 Leather with a third coat of SW-179 Muddy Waters.
Wood and soda firing results will vary.
SW-187
Pint - 16oz
Cone 6: Himalayan Salt is a soft matte glaze with light pink and burnt orange mottling that will pool a glossy clear.
Cone 10: Color changes to an opaque, variegated gray/white that breaks gray over texture and can pool a glossy purple/blue when thick.
Tip: This glaze can be very mobile; Recede coats to avoid run off on vertical pieces and practice caution in combination.
Note: Not recommended for dinnerware due to surface durability.
Wood and soda firing results will vary.
SW-189
Pint - 16oz
Cone 6: Cenote is a semi-opaque, sky blue gloss glaze that has a variety of brown crystals that melt during firing.
Cone 10: Base color darkens. Crystals become darker and more defined.
TIP: SW-166 Norse Blue is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-166 Norse Blue with a third coat of SW-189 Cenote.
Wood and soda firing results will vary.
SW-190
Pint - 16oz
Cone 6 oxidation (large photo): Passionflower Purple is a glossy, opaque, deep purple glaze with opaque crystals in varying sizes that bloom into shades of blue, green, and yellow.
Cone 10 reduction (small photo): Glaze shifts to a semi-opaque variegated blue that breaks over texture. Crystals soften and lighten. Glaze remains stable.
TIP: SW-134 Eggplant is the base glaze. For a lighter crystal effect, apply 1 coat of SW-190 Passionflower Purple over 2 coats of SW-134 Eggplant. This glaze is stable, even with heavy application.
Pint - 16oz
Cone 6 oxidation (large photo): Peppered Plum is a glossy, opaque, burgundy glaze that breaks over texture and develops a warm taupe float; small opaque black crystals are featured with large semi-transparent burgundy crystals.
Cone 10 reduction (small photo): Glaze darkens, and crystals soften. Large crystal shifts to opaque red. Light application recommended.
TIP: SW-113 Speckled Plum is the base glaze. For a lighter crystal effect, apply 1 coat of SW-191 Peppered Plum over 2 coats of SW-113 Speckled Plum. This glaze is stable, even with heavy application. Light application will result in a more homogenous burgundy. Warm taupe float develops and intensifies with glaze thickness.
Pint - 16oz
Cone 6 oxidation (large photo): Amaryllis is a glossy, transparent, coral glaze with crystals in varying sizes that bloom into shades of brown, yellow, and orange.
Cone 10 reduction (small photo): Glaze fades to a transparent pink. Crystals soften. Glaze remains stable.
TIP: -SW-205 Coral is the base glaze. For a lighter crystal affect, apply 1 coat of SW-192 Amaryllis over 2 coats of SW-205 Coral. This glaze is stable, even with heavy application.

SW-115 - Pint
Cone 6 oxidation (larger image): Midnight Rain is a blue-green breaking gloss glaze that contains a black crystal. As the crystal melts and moves, a black oil-like streak is created in the glaze.
Cone 10 reduction (smaller image): Crystals melt and integrate into base glaze, darkening the color. Increased movement.
TIP: SW-100 Blue Surf is the base glaze. For a lighter crystal effect, you may try applying two coats of SW-100 Blue Surf with a third coat of SW-115 Midnight Rain.
Wood and soda firing results will vary.