Sesame White vs Sesame Grey: how far apart are they?
Sesame White (G603) is a pale base with fine grey dots; Sesame Grey (G602) is a mid-grey base with distinct black and white grain. This is a difference in base colour, not the same stone at two depths. Choose white for brightness and low contrast, grey for dirt tolerance and paving.
How big is the difference in base colour?
G603 reads as a pale grey-white from a distance, with small dark and grey dots. G602 is squarely mid-grey, with both black and white grain clearly visible. At three metres, one looks close to a light wall paint and the other is unmistakably grey. That is a base-colour difference, not a tint.
Which one hides dirt better?
On floors, grey. Footprints, dust and tyre marks disappear into it, while a white floor shows every water mark in damp or dusty conditions. On walls it reverses: white brightens a dim corridor far more effectively.
What should you watch when using white on a facade?
If joints are not aligned, or batches vary, white panels glare in sunlight. Grey is far more forgiving. If white is required, specify one production batch and place the panels with the widest variation on an elevation nobody looks at directly.
Does it yellow over time?
Granite itself does not yellow. What happens is rust or muddy water staining the surface and leaving a yellow-brown film that looks like yellowing. White panels show it sooner. Correct drainage and drip details do more for a facade than any cleaning programme afterwards.
How do you settle the choice?
Take a 100×100 mm sample of each and place it in position. A white sample has to be seen next to the adjacent wall and window frames; judging a single tile in isolation tells you very little, because the perceived whiteness shifts with its surroundings.