It has happened to me so many times that I should not be surprised when it does yet again.

See, I often find that long after I don’t buy something, I keep thinking about it.

I have two examples from within the last week, though the circumstances were quite different.

It was, come to think of it, a week ago today when I was again dazzled by the collection featured by the Macklowe Gallery booth at the 54th annual Winter Antiques Show , which continues through this Sunday in the city.

The Manhattan gallery specializes in 20th century decorative arts, from French Art Nouveau vases to Tiffany lamps to the most unique estate jewelry.

Each year at the show, I spend time daydreaming about these lovely treasures, though I tend to think they’re “a bit” beyond my budget.

This year, I was captivated by pieces such as these:

That’s a Tiffany Studios New York glass-and-bronze “Elaborate Grape” table lamp. The circa-1900 piece features a leaded glass shade over a patinated bronze “tree-trunk” base. This rare work has quite a provenance, having once been in the collection of Frank Stanton, the former television executive who long headed up CBS. (All Macklowe pictures courtesy the gallery).

This was another lovely work, a French Art Nouveau glass-and-bronze “Snail” table lamp by Daum. It features polychrome glass in shades of green, yellow, red and blue. Etched grapes and applied snails (look closely) add depth to the circa-1900 piece.

And then there was a collection of French Art Nouveau acid-etched and enameled glass vases, also by Daum, depicting winter scenes. Here are just two of them:

These, of course, are museum-quality works of art.

I was happy to be able to look at them so closely — and know they’ll remain in my memory for a long time.

Think I have to leave it at that.

On the other end of the spectrum, I made a run to Piermont on Sunday afternoon.

When working on a story about jewelry for our sister publication, Rockland Magazine, this past month, I was charmed by a necklace at Gee, Ginger!

Mercedes Kent Ross’ sweet little boutique is one of three sharing space at 535 Piermont Ave. (stay tuned; there are plans to expand in coming weeks).

The necklace that caught my eye, Kent Ross had told me, was a piece of “retrolite� jewelry. A company, Classic Hardware, makes contemporary pieces based on that vintage favorite, Bakelite.

Now, I’m not normally a Bakelite fan — but I just fell in love with the hue and shape of this little necklace:

So much that weeks after seeing it, I was back at Gee, Ginger! hoping that it would still be there.

It was, so I paid my $32 — and tried not to look at all the rest of the merchandise on hand.

After all, I wanted to enjoy this lovely necklace and prevent something else from catching my eye.