What do you most often browse websites for stones with? Smart phone? iPad, Laptop, Desktop? Do you find sites not optimized for hand held devices to be a pain in the neck?
Mostly from my phone (I'm on my phone right now) however I browse on my laptop as well especially when I'm anticipating a new drop or interested in purchasing (my phone over saturates colour).
Sometimes I actually prefer sites when they are not optimised for mobile because mobile sites tend to be weird and unresponsive-- I just don't like them. But, what I do find a pain is when sites, for example your Prescisiongem, have a drop down menu because it doesn't work on phones. You can't hover your mouse because there is no mouse, so one has to awkwardly long touch and hope that they select the right category before the page loads to whatever you long touched on.
I'm not 100% sure if the drop menu is on your site or a different one so I apologise if I mixed you up.
Desktop at home, iPhone at work/out and about. There is only one gem site with an annoying mobile site, so I always switch to the regular one whenever I'm looking at their stuff, but most are okay on my phone, yours included.
Tablet mostly. (Nexus 7) It always with me and it has a more accurate resolution than my phone or computer.
While some sites that aren't handheld compatible are a bit troublesome to navigate, its never enough so that I won't browse them. The only way I would scratch a site is if it contains something like flash making it unaccessible. That's annoying enough to make me not bother to check it again even if I was on my laptop.
Mostly laptop. I prefer full websites to mobile sites. Often they aren't as easy to navigate as one might have thought when they were being designed (mobile optimized, that is).
Laptop, iPhone and occasionally my Tablet. I prefer the full website when on my iPhone because I like having full capability to navigate and access to other controls which aren't always available when on a mobile optimized website. When on my laptop, I prefer Chrome and Firefox over IE.