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Cacoxinite (rutilated amethyst)

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   Never heard of Cacoxinite? Not surprising. I didn't either until a year ago. It's been around for a long time, but no one has bothered to develop it for the gem market. Until the last year or so. There isn't a lot around, and almost all is from Brazil. A gemologist has identified this material and believes the needles are Goethite. It varies in its appearance from needled quartz with amethyst splotches, to stones with distinct clear/amethyst zoning with just a little Goethite. Sometimes the needles are red. An unusual and pleasing looking gem that belongs in every collection. Please understand that the images here are my best attempt, but still don't get their personality. Still pictures are so cold.

    If you see something you want, just click on the 'add' button to the left of each listing. It will be added to your cart. Most items will be single listings. It will noted when more than one is available; if more than one is wanted of those, just add them one at a time to the cart.

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   When I say buff top in the descriptions it refers to a gem that has a faceted pavilion and a smooth domed crown.

 

   11.2x8.5mm Rectangular Buff top. Faceted pavilion. Mostly clear with a wisp of Amethyst off to the side. 4.35 carats @ $4/ct.   $17.40 SOLD
   14.5x9.5mm Rhomboid shape. Mixed cut crown and pavilion. Back is flat. Dark purple splotch located near the top. Red spot at the top that can just be made out in the pic. Chock full of black rutile. 5.6 carats @ $4/ct.  $22.40 SOLD
   11x8.3mm Rectangle. Step cut crown and pavilion. Three quarters is a dark purple and the clear part at the end has some small rutile needles pointing toward the center. 3.7 carats @ $4/ct.  $14.80 ccx313f.jpg (45085 bytes)
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   11.5x7.2mm Rectangle. Step cut pavilion; Buff top crown. Wisp of purplish pink at the center, and full of small silverish needles. There is a craze flaw at one side so I'm discounting it, even though it's not all that evedent. 3.15 carats @ $3/ct.  $9.45 SOLD
   14x8.8mm Rectangle. Step cut pavilion and a buff top crown. Clear quartz with a wisp of dark amethyst near one end. Small dark needles at the amethyst end. 5.6 carats @ $4/ct.  $22.40 ccx313i.jpg (38397 bytes)
ccx313i

 

 

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