tell you what, inspect the 511 liquid in a clear glass. If its yellow or gold colored throw it out. sometimes the factory foil seal on the new jugs can fail and allow air in and it may discolor. 511 should be clear and if its yellow it can ruin your grout.I had a bright white grout job yellow with brand new 511 turned out to be defective sealer ( foil seal failed ) cost me A LOT of money in repair and NO thanks to Miracle sealants.

Your kitchen sounds beautiful! Love soapstone. My marble was sealed after installation, but prior to grout. Grout color is tricky - at least for me. Do a sample board and select grout in different colors. I am unable to look at the little grout samples and say "that's the one." Best of luck

The best natural stone/grout/concrete sealer on the market is DryTreat's StainProof Original, StainProof Plus, MetaCreme and the 40SK for commercial use. DryTreat's products are alcohol based and have over 60% active ingredient vs. DuPont's best, the bulletproof, a water based sealer which has only about 13% active ingredient. Miracle's 511 sealer only has a 8% active ingredient. DryTreat's sealers molecules are 300-400 times smaller which ensures a deeper penetration to maximize protection. DuPont's and Miracle's 511 are both topical sealers which means you must re-apply them every 6 months or so. StainProof Original/Plus you only apply them once, and if you clean and maintain your stone you will be good for a life time. DryTreat sealers are VOC compliant and suitable for indoor, outdoors, residential and commercial use. Their warranties are real; they stand behind their product 100%. We have been in the tile and stone industry for over 30 years and dealt with all sealer companies. We have been using DryTreat for over 8 years and never had one issue. Definitely the best impregnating sealer money can buy!

Just did a comparison between Akemi Nano Effect and Miracle Porous Plus on Absolute black flamed granite tile: Both sealers are excellent against water (it beads up). Two coats of Akemi and even a single coat protect against water, espresso, wine, and olive oil (right). Porous Plus (right) darkens the stone a bit more (this is 24 hours after application), and resists all but the oil well. The negative control of untreated is down the center. Conditions left to right: 0.5 mL of distilled deionzed water, hot espresso, red wine, and olive oil. Top 1/4 (two coats of sealant applied 4 hours apart), top middle quarter (single coat), bottom half (two coats, applied immediately after one another with 5 minutes to soak, then wipe). Have some Tenax Proseal coming tomorrow to compare to Akemi, the clear winner here.