Is Your Sunstone Real or Fake?
How to tell genuine sunstone from imitations
The classic sunstone fake is man-made 'goldstone' — copper-fleck glass — sold as natural sunstone. The distinction matters most for pricier Oregon sunstone, where copper-bearing gem material commands real money and glass imitations are common.
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Common sunstone fakes & look-alikes
- Goldstone (glass). Dense, uniform, obviously artificial copper glitter with a glassy body and often round bubbles. Natural sunstone's shimmer is irregular and scattered, from platelet inclusions.
- Glass 'Oregon sunstone'. Faceted glass sold as gem sunstone — watch for bubbles, mold seams, and a warm feel; genuine Oregon sunstone is feldspar with schiller and natural inclusions.
- Assembled / coated stones. Cheaper feldspar coated or backed to fake schiller; inspect for surface films or a doublet seam.
Simple at-home tests
- 1Glitter type. Goldstone shows a dense, even sea of sparkles; natural sunstone shows an irregular, scattered shimmer and often visible platelet inclusions.
- 2Hardness. Sunstone is feldspar (Mohs 6–6.5); it can scratch glass but not quartz. Goldstone glass is softer and scratches easily.
- 3Bubble & seam check. Round bubbles, mold seams, or a doublet line under a loupe indicate glass or an assembled stone, not natural sunstone.
At-home tests are indicative, not definitive — for valuable pieces, get a professional gemologist's opinion.
The bottom line
An irregular, scattered copper shimmer in a feldspar that shows natural platelet inclusions is genuine sunstone. A dense, uniform glitter with bubbles is man-made goldstone glass.
FAQ
- How can I tell if my sunstone is real?
- An irregular, scattered copper shimmer in a feldspar that shows natural platelet inclusions is genuine sunstone. A dense, uniform glitter with bubbles is man-made goldstone glass.
- Why is Oregon sunstone so much more valuable?
- Oregon sunstone is a rare copper-bearing feldspar that can be gem-clear with strong color and schiller — including scarce green and bicolor — unlike common shimmery Indian material.
- Is sunstone the same as goldstone?
- No — goldstone is man-made glass with copper flecks; natural sunstone is a feldspar with a more irregular, scattered shimmer.
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