Goldstone
Polishers Laps Saws
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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.
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Item # GS09120180
2 inch (50mm) Goldstone Sphere 1

$17.00
Item # GS09121180
2 inch (50mm) Goldstone Sphere 2

$16.00
Item # GS09122180
2 inch (50mm) Goldstone Sphere 3

$18.00
Item # GS09123180
2 inch (50mm) Goldstone Sphere 4

$17.00
Item # GS09124180
2 inch (50mm) Goldstone Sphere 5

$17.00
Item # GS06145501
2 inch (50mm) Blue Goldstone Heart
$26.00
Item # 39GS03137191
Nice Green Goldstone
Rough

$38.00
Item # 41GS03137123
XL Goldstone Rough

$48.00
Deep Emerald Green rough
Goldstone from Italy. Edges
worn and chipped.
Lots of
good Rare Green
Goldstone!

Measures 3.6 x 2.5 x 2.4"
(9.2 x 6.5 x 6.2cm) and
weighs 19.9oz or 1.25 lbs
(566g)
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)
Item # GS11122541
Goldstone Rough

$28.00
Beautiful glittering rough
Goldstone. Highly reflective mix!
This is a very good display
specimen or cutting stock

Measures 4.3 x 2.2 x 1.9"
(10.9 x 5.7 x 5cm) and weighs
11oz or 0.69 lbs (312g)
Item # GS11126631
Goldstone Rough 2

$26.00
Beautiful glittering rough pyramidal shaped
Goldstone. Highly reflective mix! This is a very
good display specimen or cutting stock
(2 sides cut)

Measures 3.3 x 2.9 x 2.6" (8.5 x 7.4 x 6.6cm)
and weighs 9.4oz or 0.58 lbs (266g)
Item # BGS03133152
Blue Goldstone
Rough 1

$49.00
Item # BGS03133181
Blue Goldstone
Rough 2

$37.00
Item # BGS03133191
Blue Goldstone
Rough 3

$38.00
Item # BGS03132181
Blue Goldstone
Rough 4

$36.00
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 4.5 x 2.5 x 2.3" (11.6 x 6.5 x 5.8cm) and weighs 23.8oz or 1.49 lbs (676g)
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)
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 3.5 x 2.9 x 2.5" (9.1 x 7.5 x 6.5cm) and weighs 24.2oz or 1.51 lbs (687g)
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 4.8 x 4.1 x 3.7" (12.4 x 10.4 x 9.5cm) and weighs 36.3oz or 2.27 lbs (1031g)
Indoors with Flash
Item # 40GS03137161
Goldstone Rough

$30.00
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 4.6 x 3 x 2.9"
(11.9 x 7.7 x 7.5cm) and weighs
24.2oz or 1.5 lbs (686g)
Lots of Sparkle and Flash!
2 x 1.8 x 0.79 inches (50 x 46 x 20mm)