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One of the more unusual specimens that I bought
at Tucson in 1998, this tiny ruby spinel crystal has an odd, tabular form. This is due to the fact
that it twinned when it first formed- I do not know for sure if this would constitute a
spinel-law twin, though I think that it does. Like most ruby spinels that I have seen, it
comes from the Mogok vicinity of Burma and has the classic, ruby-red color. One can easily see
the twinning plane and its effect in the second image. The crystal likely measures about 0.3" (8
mm) in diameter.
I cannot really recall where I got this tiny
amethyst crystal, but it is a neat little piece. It consists of a single scepter crystal,
wherein the upper part of the crystal, including the termination, grew more quickly than the lower
portion, so that the upper part has a larger diameter. I believe that it is Brazilian, and it
does not exceed 0.8" (2 cm) in length.
I bought this lovely when I visited the Tucson
shows in 1997. It consists of an arborescent formation of native silver that extends from a
white calcite matrix. These arborescent "branches" show definite cubic and octahedral form at
their ends, and though the piece is becoming somewhat oxidized, one can still see some silver
coloration and metallic luster. It measures approximately 1 x 0.8 x 0.6" (2.5 x 2.0 x 1.5 cm)
and is in excellent condition.
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