I have been recently using a light box such as this https://www.amazon.com/dp/B099Z94MQP?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4&th=1

The results are very good for most chips. But as you say reflective surfaces (like hot stamps) are tricky. I point my camera down from the hold in the top. In order to get accurate depictions I sometimes have to put the chip in my hand and 'tilt' it in just the right angle.