Goldstone
Museum Specimens
SpiritRock Shop
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The History of Goldstone

Goldstone is a type of glass made with copper or copper salts in the presence of a reducing flame. Under
normal oxidative conditions, copper ions meld into the silica to produce transparent bluish-green glass; when
the reduced goldstone melt cools, the copper remains in atomic isolation and precipitates into small
crystalline clusters. The finished product can take a smooth polish and be carved into beads, figurines, or
other artifacts suitable for semiprecious stone, and in fact goldstone is often mistaken or misrepresented as
a natural material. There are small imperfections (swirls, pits etc) in goldstone, it is man made.

The most common form of goldstone gives the illusion of being reddish-brown, although in fact that color
comes from the copper crystals and the glass itself is colorless. Some goldstone variants have an
intensely-colored glass matrix-- usually blue or violet, more rarely green-- and a more silvery appearance to
the suspended crystals, whose color may be partially masked by the glass or which may be based on
different metals than copper (perhaps cobalt, manganese, or chromium).

The manufacturing process for goldstone was discovered in seventeenth-century Venice by the Miotti family,
which was granted an exclusive license by the "Doge" (The chief magistrate and leader of the Most Serene
Republic of Venice). Persistent folklore attributes the discovery and secret of goldstone to an unnamed
Italian monastic order, giving rise to the alternate name
"monk's gold" or "monkstone". Another name,
"stellaria", is based on the starry internal reflections.

Curiously, goldstone is one of the few cases where a synthetic simulant provided the eponymy for the similar
natural stone. The original Italian name for goldstone is "avventurina" or some similar word or phrase
indicating its accidental discovery, hence the mineral name "aventurine" for forms of feldspar or quartz with
mica inclusions that give a similar glittering appearance.
Official PayPal Seal
Item # GSS06170001
2 inch (50mm) Goldstone Sphere

$2
4.00
Item # 41GS03137123
XL Goldstone Rough

$48.00
Item # GSHB06170001
2 inch (50mm) Blue Goldstone Heart
$26.00
Item # GSRG06178471
Deep Green Goldstone Rough

$36.00
This is a classic - GOLDSTONE. This is a man-made material from Italy. It shows little flashy sparkles. It is the
same hardness as glass and takes a great polish.

Measures 5 x 4.5 x 4.4"
(12.8 x 11.5 x 11.2cm) and weighs 51.8oz or 3.24 lbs (1469g)
Deep Emerald Green rough Goldstone from Italy. Edges worn and chipped.
Lots of good Rare Green Goldstone!

Measures 5
.3 x 4.2 x 1.7" (13.6 x 10.7 x 4.5cm)
and weighs 28.8 oz or 1.8 lbs (819g)
Item # BGS03133191
Blue Goldstone Rough

$38.00
This is classic - BLUE GOLDSTONE. This is a man-made material from Italy. It shows little flashy sparkles. It is the
same hardness as glass and takes a great polish
Measures 2.7 x 3.5 x 2.4" (6.8 x 9.0 x 6.2cm) and weighs 24.7oz or 1.54 lbs (700g)
Indoors with Flash
Lots of Sparkle and Flash!
2 x 2 x 0.77 inches (50 x 50 x 19.7mm)
This is a classic - GOLDSTONE. This is a man-made material from Italy. It shows
little flashy sparkles. It is the same hardness as glass and h
as a great polish.
There are naturally forming imperfections that occur on making this type of glass.
Small air bubble dots are common, along with swirls in the coloring. We always try
to show any imperfections found in goldstone. This sphere has very even sparkle
and displays well.
Item # GSSB06170001
2 inch (50mm) Blue Goldstone
Sphere

$2
9.00
This is a classic - BLUE GOLDSTONE. This is a man-made material from Italy. It
shows little flashy sparkles. It is the same hardness as glass and has a great
polish. There are naturally forming imperfections that occur on making this type of
glass. Small air bubble dots are common, along with swirls in the coloring. We
always try to show any imperfections found in goldstone. This sphere has very
even sparkle and displays well.
Item # GSSGN06170001
2 inch (50mm) Green Goldstone
Sphere

$29.00
This is a classic - GREEN GOLDSTONE. This is a man-made material from Italy. It
shows little flashy sparkles. It is the same hardness as glass and has a great
polish. There are naturally forming imperfections that occur on making this type of
glass. Small air bubble dots are common, along with swirls in the coloring. We
always try to show any imperfections found in goldstone. This sphere has very
even sparkle and displays well.
Item # GSHGN06170001
1.75 inch (44.5mm) Green Goldstone Heart
$26.00
Lots of Sparkle and Flash!
1.75 x 1.68 x 0.84 inches (44.5 x 42.8 x 21.4mm)
Item # GSH06170001
2 inch (50mm) Goldstone Heart
$26.00
Lots of Sparkle and Flash!
2 x 2 x 0.8 inches (50 x 50 x 20.5mm)