Today's new release is Robert Oster Sparkling Cranberry, a new Robert Oster Shake 'N' Shimmy ink. I purchased my bottle of ink from Pen Chalet.
Sparkling Cranberry is a bright cherry red with plenty of silver shimmer. This ink would be great for Christmas cards.
In large swabs, you can see lots of shimmer, but no sheen.
Let's take a look at how the ink behaves on fountain pen friendly papers: Rhodia, Tomoe River, and Leuchtturm.
Dry time: 20 seconds
Water resistance: Low
Show through: Medium
On Staples 24 lb copy paper there was some feathering in every nib size as well as a bit of bleeding, so it's not an ink I would recommend for cheap paper.
I used a broad Conklin Durograph Forest Green on Tomoe River paper. The ink had an average flow. The shimmer sinks fast, so to keep it in suspension the pen needs to be rotated often.
Overall, the shimmer is a bit inconsistent. To keep the shimmer in suspension it has to be rotated at the end of every written line. The ink dries fast, and is a nice color.
Disclaimer: I purchased this ink myself, and all photos and opinions are my own. This page does contain an affiliate link.