These "lovely new ice flowers" are obtained by using an "icicle chisel" on an "ice cube" during the "Within the Tides Quest"
> This mission is given by npc Vrisaki
> When using the item on the cube, it can give types of ice flowers:
1. Puny Ice Flower
2. Pretty Ice Flower
3. Beautiful Ice Flowers
4. Marvelous Ice Flowers
> The objective of the quest is to try to carve a "Marvelous Ice Flower"
> It is possible to keep the item in the backpack
> The ice flowers are a sign of resistance to the flames of the fire asuras
Source: Libosi Twitch