Category: Glaze > Clear
Created 2004-06-01 09:00:00 by Glazy Admin
Categories: Glaze > Clear
Firing Temperature: Δ04-03
Atmospheres: Oxidation
Surface Type: Glossy
Transparency: Transparent

Glaze Type: Alkaline
Honey yellow = Spanish Red Iron Ox 11%
Turquoise = copper carb 6%
Soft blue = cobalt carb .5%
purple = manganese silicate 5% (for this colorant delete flint in base)
Green = chroome ox .25%, copper carb 6%, RIO 11%
From Lisa Orr in CM

Material Amount Batch Subtotal
Frit 3110 73
EPK 15
Gerstley Borate 12
Total: 100

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 MgO CaO K2O Na2O KNaO P2O5 Fe2O3 TiO2 LOI
Frit 31107348.824.
Gerstley Borate121.780.123.220.422.330.050.480.530.
100% no LOI 60.9710.745.650.466.872.7812.2315.

Unity Molecular Formula (UMF)



0.55 Na2O
0.08 K2O
0.34 CaO
0.03 MgO


0.29 Al2O3
0.23 B2O3


2.81 SiO2





0.63 : 0.37

SiO2:Al2O3 Chart

Closest 100 neighbors in Glaze > Clear.

Click and drag to zoom
Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 9.63

Similar Base Recipes

No recipes with similar base ingredients and amounts were found.

Similar RO/R2O Unity Formulas

No recipes with similar RO/R2O Unity Formulas were found.

Jeff Szarzi 2017-09-13 20:22:11
The glaze crazes on terra cotta at cone 03, but I like the look. Does not run. Great color in honey yellow and turquoise.


09/2016 Note: This is a new feature. If a recipe material is not listed, that material's data has not yet been added. Some materials only have GHS ratings, while others only have HMIS ratings. Warnings differ between systems and countries. Glazy does not take any responsibility for accuracy of linked SDS information. Contact your ceramics supplier for safety information for your specific materials.
Globally Harmonized System (GHS) Hazardous Materials Identification System (HMIS) SDS Link
Material Pictograms Signal Word Hazard Statements Health Flammability Hazard Protection
EPK HarmfulHealth Hazard DANGER EPK Kaolin is a naturally occurring mineral, which may contain amounts of crystalline silica
typically 0.1-1.0%, may cause damage to respiratory system through prolonged or repeated
1 0 0 E
Gerstley Borate