Comparing the two fragrances…

Floris

Imperial Parfums
Imperial Iris Cologne
Rubis Imperial
Only in Imperial Iris Cologne
Shared character
Both Imperial Iris Cologne and Rubis Imperial feature bergamot, musk, amber, and lavender. They share citrus, powdery, aromatic, and fresh spicy accords.
How they differ
Imperial Iris Cologne includes notes of rose, sandalwood, geranium, neroli, oakmoss, petitgrain, blackcurrant, iris flower, and marine/sea notes, resulting in woody, earthy, iris, and rose accords. Rubis Imperial contains lemon, vanilla, patchouli, and labdanum absolute, which create fresh, amber, lavender, and musky accords.
Who each suits
Imperial Iris Cologne suits those who prefer woody, earthy, and marine profiles with iris and rose. Rubis Imperial suits those who prefer fresh, amber, and musky profiles with citrus and vanilla.
More Imperial Iris Cologne comparisons
Only in Rubis Imperial