No I don't think it's 'Little Gem'. I probably sold thousands of them over the years and they'd be very squat at that age and you'd never see the trunk, at least as they are propagated in Canada. They developed a serious problem, suddenly a whole segment would go brown & the nursery stopped propagating one of their best sellers. The older needles look too bright and shiny. Here's a photo of one that arrived here in Nova Scotia sometime in the 70's, likely from Mitsch in Oregon or Alpenglow in BC.
That Gregoryana group is a nightmare to sort, there's a very old one here called 'Gregoryana Parsonii' and as best as I remember you can only distinguish them in old age. GP is an undlating mound under a foot - looks like a cloud. Could be one of them, the colour on the old foliage looks kind of right - if so and to keep your sanity be happy with simply 'Gregoryana'. ; )
Photo Picea abies 'Little Gem' and I have to say it looks nothing like 'Little Gem' in its first 25 years.
johnw