Just holding a thousand carats of rough, watermelon tourmaline out of the gem factory window. They handled it pretty well. Love the element of trust here, or rather their trust of my passion, or maybe insistence. I can’t help it. I had to get the light shining through it ! That’s what you do so you can see the quality of the rock inside. Clarity of the gemstone is king, thew more clarity the more valuable. I like all rocks, cloudy, opaque or crystal clear. They are all equally beautiful to me.