Q: We have dark granite countertops, I think called Ubatuba, that were installed in our kitchen when our house was built in 2003. There is one major seam between two slabs on the L-shaped main countertop. The seam was filled with some substance during installation. I think they mixed granite “dust” with caulking material to match the color. That caulking has worn away over the years. Is there a way I can restore that? Or do I need to contact someone with access to the same kind of granite dust to do the repair?

A: If you want to fix this yourself, you should pry out all the loose filler, then refill with two-part epoxy tinted to match the stone as closely as possible. Tape along both sides of the seam first so the epoxy doesn’t smear over the stone surface. Mix and apply the epoxy, remove the tape, and let the epoxy harden as recommended on the label. Then scrape off the excess with a sharp razor blade. DeFusco Industrial Supply (defusco.com; 800-289-6384) sells LamLock RocketGel Basic Bundle, a kit with the epoxy components, plus eight colors that you can mix to get a good match, for $52. Wood And Stone Epoxy

Or you could call a professional, which has a few advantages. First, you’d get someone experienced in matching colors. And you would get advice about whether there is a larger problem. In the picture you sent, the front edges of the two sections appear to be out of line. If that’s the case, it could indicate that the slabs have shifted.

Herbie Bennett, one of the owners of the Granite Guys in Hagerstown, Md. (301-739-5510; thegraniteguysonline.com), said patching the seam would cost about $100. The price isn’t all that much more than the supplies would cost you.

Q: I have a small antique mirror, 12 inches by 8 inches, that needs to be resilvered. It is part of a three-piece set for a dining table centerpiece. The center rectangular piece and the matching piece for the other side are fine, but the tarnish on the third piece spoils the look. I haven’t been able to find anyone who resilvers mirrors. Do you know who can do it?

A: Angel Gilding in Forest Park, Ill. (708-383-3340; angelgilding.com), sells the supplies, and its website lists several professionals who do this work. Two who responded to emails and phone calls are Tom Huisman of Huisman Glass in North Oaks, Minn. (651-428-8865; huismanglass.com), and Tom Eddleman of Eddleman Etching in Jackson, Miss. (601-540-5207; tomsetching@bellsouth.net).

Both recommended that you consider having all three pieces resilvered. “If one has a lot of deterioration, chances are the others do, too,” Huisman said. “If I resilver one and the others are a little tarnished, the one will stand out.”

Eddleman said customers often opt to have a newly resilvered mirror “antiqued” so that it conveys a sense of its age. “Basically, when you antique a mirror, you do a regular resilvering and then you distress the silver,” he said. “It can change colors, depending on how you do it. More than likely it will show some of the backing paint — dark brown. But here’s the thing: It’s a random thing. There is no way to match a truly antique mirror.” But if all three pieces are given the same treatment, they will look like they belong together.

Huisman charges $25 per square foot of mirror, with a $40 minimum. After looking at the picture you sent, he spotted what might be a couple of chips on one edge of your mirror. If that damage is really there, and if you want him to smooth it out, he can do that, too. He charges $2 a running inch to create a bevel up to half an inch wide along the edge of a mirror, but if he just needs to feather an edge or round over a corner a bit, the price often works out to $20 to $40, depending on how much time the job takes. Given that your mirror is not even one square foot, you might be able to get a touch-up done and still be under the minimum fee.

Eddleman’s business focuses more on etching glass than on resilvering. He gets only a few resilvering jobs each month, and that is reflected in his prices. He said he could resilver one piece for $275 or all three for about $475, with no extra charge if you opt for the antiquing treatment. “It’s because of the chemicals,” he said to explain the difference in the price of repairing one vs. three mirrors. “You have to buy so much of the chemicals to do it, and they have a shelf life. So one piece or three pieces, the chemicals are going to cost the same.”

If you want to tackle the resilvering yourself, Angel Gilding sells what you need and supplies instructions. A kit for removing an old reflective coating and its protective paint costs $49. A bare-bones kit with the chemicals needed to create up to eight square feet of new mirror coating costs $50. A more complete kit that includes equipment you’d need is $190.

If you leave the job to a pro, pack the mirror or mirrors carefully to avoid breakage. Wrap each mirror in padding, putting the padded pieces in a box, and stuff any empty spaces with more padding. Then place that box in a larger box that has additional padding.

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