1. All You Need to Know About Glass

2. Glass Glass GLASS!!!! n Glass is made up of three things: n SAND(silicon dioxide) viscosity n SODA ASH (sodium carbonate) fluidity n LIME(calcium oxide) stability

3. True Stained Glass vs. Today’s Stained Glass * True Stained Glass is STAINED: -Painted On, Then Fired *Today’s Stained Glass is -Colored in the manufacturing process with metal oxides

4. Metal Oxides n COBALT makes blue glass n SELENIUM and GOLD- makes red, pink n SULFUR-makes amber n COPPER- makes green n TIN or CALCIUM- makes white

5. Qualities of Glass n Transparent- see through n Translucent- lets light through only n Opaque- cannot see through(black glass)

6. Clear Glass n Transparent n No color greenish n Sometimes has a greenish or bluish cast around the edges

7. Cathedral Glass Transparent Colored May have a texture

8. Waterglass *A type of Cathedral glass (transparent, colored) *Rippled surface (like water)

9. Streaky (Wispy) Cathedral Cathedral Glass (colored) (transparent in some areas) with ‘milky’ swirls in it.

10. Glue Chip Glass which has been surface-treated with glue, then fired. The glue chips off, and then looks like a frosted windshield

11. Opalescent Glass Translucent glass with two or more colors swirled together

12. Iridescent Glass Glass treated with a finish that makes its surface ‘shimmer’ with sparkles of pink, green and gold (looks like an oil spill)

13. Baroque (not broke..) Glass Clear glass with bold swirls of one or two colors

14. Specialty Glass Off Limits to Beginners n Intermediate and Advanced Students Only: *Iridescent *Baroque *Certain Opalescents

15. Glass…not cheap…... Warm Colored Glass- Yellow Red Yellow and Orange & Pink IS DOUBLE THE PRICE OF Cool-Colored Glass- Blue Green and Purple

16. You may purchase warm colors from me or from Hobby Lobby. If you just need a little bit, buy from me ($1- $3 usually) More? Go to Hobby Lobby ($6-8) Warm colors may be avoided, if you’d rather not spend any extra money. Glass…not cheap…...

17. Transparent (see through) Translucent (light through) Opaque (can’t see through) Cathedral Textured Cathedral Waterglass Glue Chip OpalescentBlack Glass ---------- Streaky / Wispy Cathedral ------- Baroque ------------------------------Iridized/ Iridescent-----------------------------