Rutilaria radiata, unknown mounter

Rutilaria radiata, top part
Rutilaria radiata, bottom part

Rutilaria radiata. Unknown mounter or location. Olympus BHB microscope using 450nm LED light. 63x Leitz Pl Apo NA 1.40 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. There seems to be two parts present, one stacked on top of the other. Due to the extremely shallow depth of field of the objective and transparency of the diatom, I was able to image the lower part through the top part. Stacks prepared in Zerene (Pmax).