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.

Blue Goldstone Freeform Display Specimen
Blue Goldstone Freeform Display Specimen
Blue Goldstone Freeform Display Specimen
Blue Goldstone Freeform Display Specimen
Blue Goldstone Freeform Display Specimen Blue Goldstone Freeform Display Specimen Blue Goldstone Freeform Display Specimen Blue Goldstone Freeform Display Specimen
Item # 17BGSFF09200521

Blue Goldstone Freeform Display Specimen

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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 may occur on making this type of glass. Small air bubble dots are common, along with swirls in the coloring. This piece has very minuscule imperfections and no visible swirls. This specimen has very even sparkle and displays well, a beautiful piece for your collection. (also makes a great paperweight as it is flat on the bottom)

This specimen weighs 10.7 oz or 0.67 lb (305g) and measures 3 x 2.7 x 1.5 inches (7.7 x 7 x 3.9 cm)

Blue Goldstone Freeform Display Specimen
Blue Goldstone Freeform Display Specimen
Blue Goldstone Freeform Display Specimen
Blue Goldstone Freeform Display Specimen
Blue Goldstone Freeform Display Specimen Blue Goldstone Freeform Display Specimen Blue Goldstone Freeform Display Specimen Blue Goldstone Freeform Display Specimen
Item # 18BGSFF09201521

Blue Goldstone Freeform Display Specimen

$39.00

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 may occur on making this type of glass. Small air bubble dots are common, along with swirls in the coloring. This piece has very minuscule imperfections and no visible swirls. This specimen has very even sparkle and displays well, a beautiful piece for your collection. (also makes a great paperweight as it is flat on the bottom)

This specimen weighs 10.4 oz or 0.65 lb (297g) and measures 3 x 2.6 x 1.5 inches (7.7 x 6.6 x 3.8 cm)

Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen Red-Brown Goldstone Freeform Display Specimen Red-Brown Goldstone Freeform Display Specimen Red-Brown Goldstone Freeform Display Specimen
Item # 19BGSFF09202521

Red-Brown Goldstone Freeform Display Specimen

$39.00

This is a classic, the original color Red-Brown 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 may occur on making this type of glass. Small air bubble dots are common, along with swirls in the coloring. This piece has very minuscule bubbles with a few visible dark brown swirls on the flat bottom. This specimen has very even sparkle and displays well, a beautiful piece for your collection. (also makes a great paperweight as it is flat on the bottom)

This specimen weighs 9.9 oz or 0.62 lb (281g) and measures 3 x 2.7 x 1.6 inches (7.6 x 6.9 x 4.1 cm)

Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen
Red-Brown Goldstone Freeform Display Specimen Red-Brown Goldstone Freeform Display Specimen Red-Brown Goldstone Freeform Display Specimen Red-Brown Goldstone Freeform Display Specimen Red-Brown Goldstone Freeform Display Specimen Red-Brown Goldstone Freeform Display Specimen Red-Brown Goldstone Freeform Display Specimen
Item # 20BGSFF09203521

Red-Brown Goldstone Freeform Display Specimen

$39.00

This is a classic, the original color Red-Brown 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 may occur on making this type of glass. Small air bubble dots are common, along with swirls in the coloring. This piece has very minuscule bubbles with a few visible dark brown swirls on the flat bottom. This specimen has very even sparkle and displays well, a beautiful piece for your collection. (also makes a great paperweight as it is flat on the bottom)

This specimen weighs 9.7 oz or 0.6 lb (275g) and measures 3.1 x 2.5 x 1.5 inches (8 x 6.4 x 3.8 cm)

2 inch (50mm) Goldstone Heart
2 inch (50mm) Goldstone Heart
2 inch (50mm) Goldstone Heart 2 inch (50mm) Goldstone Heart
Item # GSH06170001

2 inch (50mm) Goldstone Heart

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Lots of Sparkle and Flash!

2 x 2 x 0.8 inches (50 x 50 x 20.5mm)

Deep Green Goldstone Rough
Deep Green Goldstone Rough
Deep Green Goldstone Rough
Deep Green Goldstone Rough
Deep Green Goldstone Rough
Deep Green Goldstone Rough
Deep Green Goldstone Rough Deep Green Goldstone Rough Deep Green Goldstone Rough Deep Green Goldstone Rough Deep Green Goldstone Rough Deep Green Goldstone Rough
Item # 1-GSRG02193071

Deep Green Goldstone Rough

$37.47

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

Measures 6.4 x 2.9 x 2.2" (16.3 x 7.5 x 5.7cm) and weighs 26.3 oz or 1.64 lbs (746g)

Deep Green Goldstone Rough
Deep Green Goldstone Rough
Deep Green Goldstone Rough
Deep Green Goldstone Rough
Deep Green Goldstone Rough
Deep Green Goldstone Rough Deep Green Goldstone Rough Deep Green Goldstone Rough Deep Green Goldstone Rough Deep Green Goldstone Rough
Item # 2-GSRG02195981

Deep Green Goldstone Rough

$41.69

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

Measures 4.6 x 3.5 x 1.9" (11.7 x 8.9 x 4.8cm) and weighs 29.2 oz or 1.83 lbs (830.5g)