A couple of weeks ago, a customer needed a replacement diamond for a
small, gent's cluster ring. Upon examination, I noticed that two of
the stones have a square-shaped "phantoms" directly under their table
facets. Although not very common, they are a cluster of extremely
tiny pinpoint crystal inclusions that gather in a cubic shape that
mimics the diamond's isometric (cubic) crystal system. See two photos
of them heRe:
Since these two finished stones are basically the same size, the
phantoms are also the same size, shape and color, coupled with the
fact that they made it into the same piece of jewelry, the chances
are pretty good that they came from the same rough.
The customer was very nice about trading me for two stones of better
clarity and color so that I could add these to my modest gemological
collection so, they are no longer mounted.
James S. Duncan, G.G.
James in SoFL