Amethyst in calibrated sculk sensor is shaded and not stretched

The bug

The amethyst bit present in the calibrated sculk sensor is shaded, causing it to look weird and inconsistent with most cross block models in the game. This can be easily fixed by adding a "shade: false" component to the two planes that compose it.

It is also not slightly stretched like the regular block, which can be fixed by adding "rescale": true to the planes components.