1st plant is extremely etiolated. It looks like one of the frilly echeverias, but ID it exactly is not easy in that condition. Looks like it is potted in peat/coco peat and may be not draining well. Container needs to have drainage hole, can't tell if yours does or doesn't. Excessive shrivelling of leaves could be from over- or under-watering.

It was like this when I bought it from a market stall...

I repotted into 1/3 succulent mix, 1/3 perlite, and 1/3 coconut coir. It has had one feed since I had it, and subsequently grew two new leaves fairly fast so I hope it is getting better. Yes, there are drainage holes drilled in.

The shrivelling has slowed, I wonder if it's doing better now...

Is it etiolated though...? I saw several mini ones of these in a shop, and they all had the same two leaves either side with a longish stem...

I would add more perlite to increase drainage, making it about 50% of the mix - just MO. Plants in the shop could have been all etiolated.

How do you water? How much sunlight is it receiving?

If it is echeveria, it is very etiolated and also ale in color. There is always a chance I am wrong about ID...if so, someone will correct me.

Thank you Rina

I water once every two weeks and give it a good soaking, but not excessively. It gets indirect sunlight, on a window sill, from about 7.30-7ish here in the UK. I can't find anywhere better sadly.

Like Rina, I thought the first one is also a very etiolated frilly echeveria at first, but then I noticed the opposite leaves, LOL. So that ruled out echeverias. I would go with either Cotyledon, or even Crassula, and maybe Kalanchoe.

Sorry, I am obviously not paying attention (didn't even look at leaves!)...but even if cotyledon or another plant, I believe it could use more light?

Victoria

I understand about lack of sunlight. Summers are good here for that, but winter days are short and dark. Using a light may help...

Hey, bumping to see if anyone able to identify the first succulent?

I found the second... Jewel Leaf

Jewel leaf is just a common name (I didn't hear that one yet). It may be best to learn proper scientific/botanical name.

Not much comes up when Googling 'jewel leaf' so really that's of no use, sorry to say.

The only Jewel related plant I know is Jewel Orchid & it's not that for sure.

Pls have patience & give it some more time for more IDs.

First thought of the first plant: an etoliated Cotyledon.

Pachyphytum oviferum moonstone sugar almond was what I thought too for the second one