Erica, the leaves, although very young and therefore not completely identifiable by me, reminds one of a baby Aloe peglerae - lucky you!

They had similar Aloe with little spikes all over the back of the leaves but I loved how this one was smooth with 3 little spikes at the tips.

-Erica

They have these here in some greenhouses too! I'm also curious to what exactly they are.

Kevin

I thought you had a very similar one? (maybe it was someone else...)

Are the ones you have seen in GH same as Erica's?

Rina

petricola, perhaps.

I've looked up both Jeff and Hoovb's suggestions with a quick little google image search. I really think it could be either so I am excited to see how it develops as it matures. I have it in quarantine right now and am going to pot up to a 4 in. pot when it can go with the others.

-Erica

I think A. petricola looks closer, tubercles will tell. If I get a chance, I'll see if I can dig up the photos I took at my local nursery.

Rina - Wasn't me, maybe David L?

my guesses include Aloe clavata and falcata (both have those pale blue, thick, fleshy leaves with sharp spines). Aloe petricola tends to have smaller teeth and flatter, wider leaves at that age. Color is right, though. Aloe peglare usually has more teeth at that size/age.

This aloe (similar to OP's plant) has been ID-ed as possibly Aloe claviflora or A. falcata (flowers may help to get proper ID since A. claviflora's inflorescence grows sideways - I doubt my plant is claviflora):

Thanks, Rina. I seem to have good luck with getting Aloe to flower. They must like my climate, or something. I'll try to remember to post updates as it matures!

-Erica