Materials · common
Blue Goldstone
Blue Goldstone is a manufactured dark blue aventurine glass with tiny sparkling metallic inclusions.
Also known as: Blue Aventurine Glass, Blaufluss, Midnight Blue Goldstone, sparkly blue glass.
Blue Goldstone properties at a glance
| Type | Materials |
|---|---|
| Chemical formula | Silica glass with copper/cobalt inclusions |
| Mohs hardness | 5.5 |
| Crystal system | amorphous |
| Luster | vitreous |
| Streak | White to colorless |
| Cleavage | None |
| Fracture | Conchoidal |
| Specific gravity | 2.5 |
| Transparency | opaque |
| Common colors | Dark Blue, Navy, Sparkly, Metallic specks |
| Rarity | common |
Geology & background
Made as glass with tiny metallic inclusions that create a dark blue glitter effect.
Blue Goldstone is a modern variant of aventurine glass used in beads, cabochons, and tumbled stones.
How to identify Blue Goldstone
- Look for a uniformly dark blue glassy body with tiny sparkly points.
- Check for glass-like conchoidal chips or bubbles on damaged edges.
- Do not confuse the retail name with natural aventurine or natural feldspar sunstone.
Full Blue Goldstone identification guide: checklist, home tests and look-alikes →
Blue Goldstone vs similar stones
Not sure it isn't something else? Side-by-side comparisons with the stones most often confused with Blue Goldstone.
Where Blue Goldstone is found
Blue Goldstone is a retail or manufactured material label; record seller disclosure and provenance when known.
How much is Blue Goldstone worth?
| Entry-level specimen | $3 |
|---|---|
| Typical collector specimen | $15 |
| Premium specimen | $80+ |
Value is usually decorative or lapidary-market value, not natural rarity. Price depends on size, polish, color effect, condition, seller disclosure, and craftsmanship.
Common uses
- Beads
- Tumbled stones
- Cabochons
- Decorative objects
Interesting facts
- It is also called blue aventurine glass.
- The star-like sparkle is produced by inclusions in glass.
- It is a manufactured material, not natural blue aventurine.
Care & safety
Blue Goldstone may be glass, coated, dyed, or otherwise manufactured; handle it as a decorative material unless verified otherwise.
Avoid inhaling dust. Do not cut, grind, or polish unknown specimens without eye protection and a properly rated respirator.
Blue Goldstone FAQ
What is Blue Goldstone?
Blue Goldstone is a manufactured dark blue aventurine glass with tiny sparkling metallic inclusions.
How much is Blue Goldstone worth?
Entry-level Blue Goldstone specimens sell for around $3, a typical collector specimen for about $15, and premium pieces for $80 or more. Value is usually decorative or lapidary-market value, not natural rarity. Price depends on size, polish, color effect, condition, seller disclosure, and craftsmanship.
How hard is Blue Goldstone?
Blue Goldstone has a Mohs hardness of 5.5. It is about as hard as window glass: a knife barely marks it, while a steel file (Mohs 6.5) will.
What is Blue Goldstone used for?
Blue Goldstone is used for beads, tumbled stones, cabochons, and decorative objects.
