Effetre

Effetre is glass made on the island of Murano, Venice, Italy. And is very popular with lampworkers partly due to the vast array of colours available.

Many stockists of Effetre glass rods use their own colour descriptions and stock numbers. The last 3 digits used by any stockist for their stock numbers will refer to the Effetre factory stock number.

Effetre colours and stock numbers

Transparent

Stock Number	Colour	Properties	Reactions
004	clear	melts quickly - may contain bubbles
005	super clear	good for encasing silver glass - less scummy than 004
008	pale amber	stiff glass
012	light topaz	stiff glass
014	topaz		reacts with silver glass - reacts with silver to produce organic effects
016	dark topaz (root beer)	stiff glass
018	light brown	stiff glass	Reacts with iris gold frit
019	sage green		reduces to terecotta in a propane rich flame
020	lightgrass green	stiff glass	may pit if heated too quickly
022	medium grass green	stiff glass	may pit if heated too quickly
023	green	stiff glass	may pit if heated too quickly
024	dark grass green	medium stiff glass	may pit if heated too quickly
025	olive
026	light teal
027	dark teal	stiff glass - handpulled
028	light emerald green	stiff glass
030	dark emerald green	stiff glass - handpulled
031	pale emerald green	stiff glass - handpulled
034	light aquamarine	stiff glass - hardens quickly
035	antique aqua
036	dark aqua	stiff glass	may pit if heated too quickly
038	very pale aqua	medium stiff glass	may pit if heated too quickly
039	dark violet
040	light amethyst	medium stiff glass
042	medium amethyst	medium stiff glass
044	dark amethyst	medium stiff glass
046	pale amethyst	medium stiff glass
048	very pale blue gray	medium stiff glass
049	straw yellow	stiff glass - handpulled
050	pale blue	medium stiff glass	appears green as an encasement over ivory
052	light blue	medium stiff glass	may pit if heated too quickly
054	medium blue	medium stiff glass	may pit if heated too quickly
056	dark blue	medium stiff glass	may pit if heated too quickly
058	ink blue	medium stiff glass - handpulled
060	cobalt blue	medium stiff glass	may pit if heated too quickly
064	black	medium stiff glass
066	intense black	super dense colour	"crawls" when superheated - reacts with Effetre anice white
068	pale rose	medium stiff glass
069	electric yelow	medium stiff glass - striking
070	uanium yellow	stiff glass
071	yellow green	medium stiff glass - handpulled colour
073	green apple	medium stiff glass
076	red	stiff glass - striking
080	pale lavender	medium stiff glass
081	ark lavender	stiff glass - handpulled - dense colour	appears pale blue under U.V. light
082	blue pink (rosato)	medium stiff glass
084	light grey	medium stiff glass
088	dark grey	medium stiff glass

Opaque

Stock Number	Colour	Properties	Reactions
204	white	melts quickly
208	light white (anise)	melts easily	reacts with nero intenso - rust colour when super heated
210	avocado green	medium stiff glass - handpulled	striation when super heated - reacts with ivory and fine silver
211	sage green	stiff glass - hand pulled	striation when super heated - reacts with ivory and fine silver
212	pea gren	medium stiff glass - handpulled
213	grasshopper green
214	nile green	medium stiff glass	Reacts with ivory glass
216	light grass green	medium stiff glass
218	petroleum green	medium stiff glass	striations when heated - reduces in a propane rich flame
219	copper green	stiff glass - handpulled	contains striations - reduces easily - reacts with ivory, silver, opal yellow, EDP
220	periwinkle	soft glass	may pit if heated too quickly - reacts with rubino oro
221	lavender	soft glass - handpulled
222	dark periwinkle	soft glass
223	mosaic green	medium stiff glass - handpulled	Dense colour - "crawls" like nero intenso when superheated
224	light sky blue	soft glass	may pit if heated too quickly - reduces in a propane rich flame
228	dark sky blue	soft glass	may pit if heated too quickly - reduces in a propane rich flame
232	light turquoise	soft glass	reduces in a propane rich flame - reacts with ivory
236	dark turquoise	medium stiff glass	reduces in a propane rich flame - reacts with ivory
240	light lapis	medium stiff glass	may pit if heated too quickly
242	medium lapis	medium stiff glass	may pit if heated too quickly
246	cobalt lapis	medium stiff glass	may pit if heated too quickly
247	ink blue
248	light gray	medium stiff glass - shocky	may pit if heated too quickly
252	dark gray	medium stiff glass	may pit if heated too quickly
254	purple	medium stiff glass
255	dark amethyst (EDP)	medium stiff glass - handpulled	pits easily - reacts with ivory,
255	silver pink	very soft glass - cools slowly
256	dark rose	soft glass
258	tongue pink	soft glass - striking - handpulled
260	light rose	soft glass
262	powder pink	soft glass - handpulled
264	ivory	soft glass	reacts with copper colours, fine silver, silver glass
265	uranium yellow	soft glass - handpulled
266	opal yellow	soft glass - handpulled - striking	reacts with copper colours, rubino oro, EDP
268	pearl gray	soft glass
271	light silver plum	medium stiff glass	reduces to silver sheen
272	violet	soft glass	reduces in a propane rich flame
273	new violet	soft glass - handpulled	reduces in a propane rich flame
274	dark violet	handpulled
275	dark silver plum	handpulled
276	dark ivory	soft glass	reacts with copper colours, fine silver, silver glass

Alabaster

Stock Number	Colour	Properties	Reactions
304	pale white	melts easily
308	light white	melts easily
312	special white	melts easily
316	agate white	melts easily
320	ivory
334	light pine green
340	green
344	pine green
348	light turuoise
352	medium turquoise	very shocky - may contain small bubbles
356	dark turquoise	very shocky - may contain small bubbles
364	dark periwinkle
368	lapis
372	light rose
376	medium rose
380	dark rose
384	Navy blue

Specials

Stock Number	Colour	Properties	Reactions
404	light lemon yellow	melts easily - dense colour
408	medium lemon yellow	melts easily - dense colour
412	dark yellow	melts easily - dense colour
416	bright yellow	melts easily - dense colour
418	butter cream yellow	melts easily - dense colour
420	coral	medium stiff glass - dense colour	reacts with copper colours - superheat to blur edges of coral dots
422	orange (pumpkin)	medium stiff glass - dense colour
424	carrot red	medium stiff glass - dense colour	edges bleed when used over white
428	light reddish orange	medium stiff glass - dense colour	edges bled when used over white
432	medium red	medium stiff glass - dense colour	edges bleed when used over white
436	dark red	medium stiff glass - dense colour	does not bleed over white
438	dark purple red	medium stiff glass - very dense colour	does not bleed over white
440	ochre (red roof tile)	dense colour
444	light brown	semi soft glass - dense colour
448	dark brown	semi soft glass - dense colour	"chocolate box" colour
452	dark red brown	semi soft glass - dense colour
456	gold pink (rubino oro)	striking - stiff glass - boils easily	likes an oxygen rich flame - bleeds into base colours - yucky gray with ivory
460	mustard yellow	semi soft glass - dense colour

Opalino

Stock Number	Colour	Properties	Reactions
504	white		likes an oxygen rich flame
508	yellow		likes an oxygen rich flame
516	nile green		likes an oxygen rich flame
520	grass green		likes an oxygen rich flame
524	sky blue	shocky	likes an oxygen rich flame
528	periwinkle		likes an oxygen rich flame
532	rose	striking	likes an oxygen rich flame
536	carnelian	striking	strike repeatedly in reduction flame to achieve a rich wine colour

Further information

For further information see ...