5 Steps I Wish I’d Followed Before Ordering Stone Countertops (A Field-Tested Checklist)

Who This Checklist Is For

I’m a procurement specialist handling stone and tile orders for commercial projects. In my first year (2020), I made the classic mistake of ordering 47 slabs of MSI quartz based on a rough estimate and a photo. The result? $3,200 in overstock and a design team that hated the color. I’ve documented 18 significant mistakes since then, totaling roughly $15,000 in wasted budget.

This checklist is for contractors, kitchen designers, and showroom managers who need to order stone countertops from a supplier like MSI—and don’t want to learn the hard way what I did. It’s not for homeowners doing a single counter; the scale is different here.

There are 5 steps. Read them, or print them for your next order.

Step 1: Measure Twice, Add 10%

Most buyers measure the final countertop dimensions. That’s wrong. You need rough slab dimensions. A standard MSI quartz slab is roughly 120 inches by 55 inches. If your counter is 100 inches long, it fits—but only if you account for the sink cutout, the overhang, and the mitered edge.

Here’s the mistake I made: I ordered 4 slabs for a 150-square-foot kitchen. The templater showed up and said I needed 6. The reason? The layout required two full slabs for the island because of the grain direction. I hadn’t accounted for that.

Rule of thumb: Add 10% to your square footage estimate. For a 100 sq ft kitchen, order 110 sq ft of material. This covers waste from cutouts, seams, and breakage. Ideally, ask your fabricator to confirm the slab requirement before you order.

Step 2: Don’t Fall for the ‘Color Match’ Myth

People assume that if you order the same MSI quartz color, all slabs will look identical. This is a surface illusion. The reality is that natural and engineered stone varies across batches.

From the outside, it looks like suppliers just stock the same color. What they don’t see is that MSI sources from multiple quarries and factories. A run of ‘Calacatta Borghini’ from one batch may have slightly different veining than a run from another. It’s normal. But if you order 5 slabs for a kitchen and they come from different production runs, you might end up with mismatched seams.

What I do now: I ask my MSI rep to reserve slabs from the same lot. If they can’t, I request photos of each slab (face and edge). The last time I didn’t do this, I received slabs that looked fine individually but had a noticeable color shift under LED lighting. I should add that slab photos don’t always capture the true color—ask to see them under natural and warm light.

Step 3: Verify Your Edge Profile Early

This sounds basic, but I guarantee someone reading this has ordered a standard eased edge and then discovered the designer wanted a waterfall miter. That mistake cost me $890 in redo fees and a 1-week delay.

Most buyers focus on the stone color and the overall budget. They completely miss the edge profile details. Your fabricator needs to know this before they cut the slab. If you’re doing a mitered edge, you need additional material—typically 25-30% more slab length per linear foot of miter.

Checklist item: Before you place the order, email the edge profile specs to your supplier. Get a written confirmation. I use this simple format: “We confirm edge profile [EASED, BEVELED, MITERED, OGGEE] for all visible counter edges.”

Step 4: Confirm the ‘Subfloor’ for Your Countertops

Yeah, that’s a weird term for stone, but hear me out. Your countertops need a solid, level base. If the cabinets are not level, the stone can crack under pressure or during installation. This is an outsider blindspot—most people assume the installer just sets the stone on the cabinets and it’s fine.

The question everyone asks is “Is the stone strong enough?” The question they should ask is “Are my cabinets level and braced for the weight?”

On a $3,200 order for MSI marble, I didn’t check the cabinet alignment. The installers showed up, started placing the slab, and it cracked because one cabinet was 1/4 inch higher than the next. That was a $1,200 loss (the slab plus labor).

Quick check: Use a 4-foot level on your cabinet tops. If there’s a gap of more than 1/8 inch, get a carpenter to shim it before the stone arrives.

Step 5: Include a ‘Rejection Criteria’ Clause in Your PO

This step is unusual, but it saved my company about $4,000 last year. When you order from MSI or any supplier, your purchase order (PO) should specify what you will reject. Don’t assume the supplier knows your quality tolerance.

For example, I learned to include: “Visible cracks longer than 1 inch, chipped edges larger than 1/4 inch, or color variation outside the approved sample will be rejected and replaced at vendor cost.”

I’m not a legal expert, so I can’t speak to the legality of every clause. But from a procurement perspective, this clause forces the supplier to be careful. The first time I used it, MSI’s quality team flagged a slab with a hairline fracture before it shipped. That caught a problem early.

I don’t have hard data on how often this clause reduces defects, but based on my experience over 5 years, I’d say it has saved us from at least 12 potential rejections.

Common Mistakes & Notes

Rush shipping doesn’t fix poor planning. I once saved $80 by choosing standard shipping and ended up paying $400 for a reorder when the slab arrived with a crack. To be fair, standard shipping is fine if you build in a buffer. But if you rush the order, you lose the chance to inspect before installation.

Don’t order just enough. Buy one extra slab if your budget allows. It’s cheaper than reordering a single slab later (which can cost 30-50% more due to minimums).

Be honest with your supplier. If you’re unsure about the color match or the edge profile, just ask. The way I see it, it’s better to ask a “dumb” question than to order the wrong thing. I’ve learned that MSI’s reps actually appreciate it when you’re upfront.