Category: Glaze > Crystalline
Created 2017-07-17 22:33:40 by Tom Demeranville
Categories: Glaze > Crystalline
Firing Temperature: Δ6-10
Surface Type: Satin - Matte
Transparency: Semi-opaque

Made a UK version and it works great. Not the same, but great anyway :)

Subbed Frit for GB, Custer for BPS and tile 6 for Devon china clay. Added silica to balance formula.

Tests fired with a weird cooling schedule using my broken kiln controller. Dropped to 815, ramped back up to 925 and held for and hour.

Have fun and experiment!

Material Amount Batch Subtotal
BPS potash feldspar 39.1
Whiting 17.5
Devon China Clay 17.2
Strontium Carbonate 12.3
Silica 5.8
Lithium Carbonate 4.5
Gerstley Borate 2.3
Total Base:98.7
Titanium Dioxide 13.7
Bentonite 2
Total: 114.4

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 MgO CaO SrO Li2O K2O Na2O KNaO P2O5 Fe2O3 TiO2 LOI
BPS potash feldspar39.125.737.234.421.255.67
Devon China Clay17.28.086.420.030.020.410.020.430.140.032.06
Strontium Carbonate12.38.633.67
Lithium Carbonate4.51.832.67
Gerstley Borate2.30.340.020.620.080.450.
Titanium Dioxide13.713.7
100% no LOI 42.4214.510.640.1610.628.91.895.011.466.4800.2214.16

Unity Molecular Formula (UMF)



0.06 Na2O
0.13 K2O
0.15 Li2O
0.2 SrO
0.45 CaO
0.01 MgO


0.34 Al2O3
0.02 B2O3


1.69 SiO2
0.42 TiO2





0.34 : 0.66

SiO2:Al2O3 Chart

Closest 100 neighbors in Glaze > Crystalline.

Click and drag to zoom
Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 4.97

Similar Base Recipes

No recipes with similar base ingredients and amounts were found.

Similar RO/R2O Unity Formulas

Recipe Name ΔTemp Al2O3 B2O3 SiO2 ZrO2 SnO2 TiO2 KNaO K2O Na2O CaO MgO ZnO BaO PbO Li2O SrO
Strontium Crystal Magic (Toms GB variation) 6-10 0.34 0.02 1.69 0.42 0.19 0.13 0.06 0.45 0.01 0.15 0.2
Matte Strontium Crystal Magic - Steven Hill 10 0.34 0.02 1.69 0.42 0.19 0.12 0.07 0.45 0.01 0.15 0.2
Strontium Crystal Magic (SCM) 6-10 0.34 0.02 1.7 0.42 0.19 0.12 0.07 0.45 0.01 0.15 0.21

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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
Whiting Harmful WARNING Causes eye irritation
Strontium Carbonate Harmful WARNING Product dust may be irritating to eyes,skin and respiratory system.  1 0 0 E
Silica HarmfulHealth Hazard DANGER From 200-Mesh SDS:
May cause cancer by inhalation.
Causes damage to lungs through prolonged or repeated exposure by inhalation.
* 0 0 E
Lithium Carbonate Harmful WARNING Harmful if swallowed.
Causes serious eye irritation.
Harmful to aquatic life.
Gerstley Borate
Titanium Dioxide Health Hazard WARNING Suspected of causing cancer
Bentonite Harmful WARNING Causes eye irritation
Causes skin irritation
May cause respiratory irritation