Isabella 23w Quartzite — can 6 slabs become 5?

All 33 pieces re-nested across 135" × 78" slabs · drawn to scale · no piece rotated

Yes — all 33 pieces fit on 5 slabs.

Every piece keeps its exact orientation, so the veining still runs the way it does today. The fit holds even if each piece is really 1″ bigger than measured, so it is not a knife-edge result. One slab (73.1 sq ft) comes out of the order. Confirm vein placement with the fabricator before cutting.

Today

6 slabs

438.6 sq ft of stone

Proposed

5 slabs

365.5 sq ft of stone

Saved

1 slab

73.1 sq ft

Stone actually used

256 sq ft

33 pieces

Utilisation

58% → 70%

of slab area

Proposed — 5 slabs

Current — 6 slabs

Piece list

Read this before you order

Dimensions were measured off your three photos, not from a cut list. Each slab boundary was perspective-corrected and every piece measured in inches; the check that the method is sound is that the second slab in each photo came back 134.9″–135.0″ wide against a true 135″. Individual pieces are good to roughly ±½″. Re-run this against the real cut list before committing.
Nothing is rotated. Every piece sits in the same orientation as your current layout, so vein direction is preserved.
Vein placement is not modelled. This solves the geometry only. Where a piece lands on the slab changes which part of the pattern it picks up, and book-matching across seams is not considered. That judgement stays with the fabricator.
Assumes ½″ between pieces and ½″ off the slab edge. The fit still works at a 1″ saw kerf, and with every piece grown ½″ in both directions.
One blind spot: in the second photo the monitor bezel hid the bottom ~5″ of the lower slab. That strip looked empty above the cut, but if a piece is hiding there it is not in this plan.
4 slabs is not realistic — the pieces total 256 sq ft against 292 sq ft of stone (88%), and the 128″×52¼″ island alone claims most of a slab. No 4-slab layout was found.