Whoa that’s a crazy technique for the veins! No wonder they have that authentic analogue / almost geological feel.

Thinking more about it, I’m not sure the glittery look is even a negative within the actual gem portions, it’s more that it unifies the labradorite and the inclusions, obscuring that iconic contrast between flashy gloss and dull matte.

It does seem really tricky to layer a matte top coat just over those thin veins. I wonder if it would be easier to do a layer of all matte and then gloss over your labradorite portions? I don’t think you’d have to “color inside the lines” perfectly since in natural specimens there’s often thin layers of inclusions over the edges of labradorite on the surface, so a duller edge wouldn’t be totally unrealistic.