I can offer gold, diamonds or any of the below catalysts :P

Restricted Lune x3

Wild Blackberry Aeridini
Coconut Sands Ferrikki x2
Sea Dragon Griffi x2
Eventide Beach Nephini
Summer Meadow Nephini
Seaslug Ryori

Leatherback Turtle Aurleon x3
Siren's Song Bulbori
Ocean's Blessing Faelora
Flower Wasp Lunemara
Beach Day Sylvorpa
Volcanic Glass Zolnixi
Island Mystic Nytekrie
Reef Guardian Vulnyx
Pipevine Swallowtail Luffox Catalyst

I'm happy to trade the others as well for diamonds but am just looking for the Ligh catalyst at the moment :)