I recently gained access to three more samples of sand from Hawai'i (the big island). This sample is black sand from Punalu'u Beach, on the southeast coast. It's fascinatingly different from the black sand I've seen elsewhere.
I'm guessing this sand is older, due to the polish and the lack of olivine. In direct sunlight it sparkles brightly. All images here were taken using a diffuser to cut back on specular highlights. 100MM macro lens on full frame digital SLR, mirror lock-up, self-timer. The sand is on a white porcelain platter.
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| Punalu'u Beach sand. Click to enlarge. |
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| Punalu'u Beach sand, closer view. Click to enlarge. |
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| Punalu'u Beach sand, maximum magnification, actual pixels. Click for full size. |
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