Try to steady youe cam.. rest it one a table or chair.. allow the camera to focus, wait for the beep and take note of the cross hairs.. Perhaps more light is nessisary.. Light box and or mirrors can also benifit your images.. Dont try to get to close to your subject.. It's best to take the shot al least a foot away then crop if needed or at leats this is how I do it.. BTW.. first image could be an emerald.. Second.. Not sure.. mossy covered river slate..