A polished freeform in banded chalcedony, shaped to suit the individual piece rather than cut to a set form, so the outline belongs to this one only.
Orca agate is the trade name, coined by dealers around 2020 after the black and white markings. The mineral underneath is chalcedony, quartz grown in crystals too small to see individually, and because it is banded, agate is accurate. You will also see this material sold as orca jasper, which is not: jasper is opaque and grainy, and this is translucent.
That translucency is worth using. Held up to a window the bands read all the way through the stone rather than sitting on the surface, which is the main thing a polished freeform is for.
Mineral: Chalcedony (silicon dioxide, SiO₂), banded, so agate
Crystal system: Trigonal
Origin: Madagascar
Hardness: 6.5 to 7 on the Mohs scale; durable, though the polished surface will dull if knocked about
Treatment: None
Dimensions: 7.38 x 4.3 x 13 cm
Weight: 530 g
You will receive the exact piece photographed.