Spinel on matrixA superb small cabinet display specimen featuring a large (nearly a full inch) free standing Spinel crystal with very sharp, highly lustrous faces and textbook octahedral form flaring out of sold white marble matrix. The main Spinel crystal is completely undamaged and it's NOT repaired, which is significant, as the vast majority of Spinels from this locality are glued back on the matrix. The color is a strong reddish pink, and the crystal shows good

A rarely seen matrix specimen of Hyalite from San Luis Potosi

I'm told that the color is caused by nickel content

It's good quality and virtually undamaged

The stacked appearance of the crystals

The WATER-CLEAR crystal is beautifully striated

The color might be a bit on the lighter side

And don’t forget that the largest crystal on the piece shows a slight purple Amethyst color

This piece was collected by Patrick and Carl Auclair in the 1990s

The faces are still notably sharp with excellent luster

have made them a favorite among collectors for decades

Specimen# CO712B166

This one is in very good shape for this material and just look at how sharp and lustrous the crystal is