There are several reactions that can cause this to happen
1, Too much hardener
2. UV light
3. Wet stone
4. Old glue

this is why I would prefer epoxy over polyester


On Mon, Jul 22, 2013 at 1:54 PM, Roger Konarski <qm144@yahoo.com> wrote:
My guess to much hardner.

Sent from my iPhone

On Jul 22, 2013, at 10:26 AM, Perfect Marble 2 <dayron.padilla13@gmail.com> wrote:

> A guy from NY came to patch this Siberian panda stone it's a gray stone translucent the guy did a great job color was to the T. this was done on Saturday and today it's all brown. What can cause this
>
>
> <image.jpeg>
>
> Sent by iPhone
> Dayron Padilla
> Perfect Marble
>
>
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