I did some tile work in a new construction condo. The builder supplied a Crema Marfil tiled shower and floor but the HOs wanted the rest of the MB tiled after they closed on the property. I went through the trouble of tracking down the original supplier and ordered the same Crema Marfil through them. While close, it didn't completely match.
Lesson is, unless you are getting all materials in a single lot, the chances of natural stone being identical, even from the same quarry, are very slim.
When working with natural stone, I always get extras (more than normal). It you get a change order to install more tile than contracted, you can get screwed with matching.
I agree with the suggestions of just sending your customers to your supplier and see what they can offer them.
Lesson is, unless you are getting all materials in a single lot, the chances of natural stone being identical, even from the same quarry, are very slim.
When working with natural stone, I always get extras (more than normal). It you get a change order to install more tile than contracted, you can get screwed with matching.
I agree with the suggestions of just sending your customers to your supplier and see what they can offer them.