Just a little ceramic information to share as a potter. Vitrified simply means the clay has become glass like by being fired to its proper maturing temperature. Usually ceramic tile means it is a lower temperature clay like earthenware or terra cotta. Porcelain is fired to the highest temperature and is more vitrified if you will. This usually means it is less porous to to absorb water and harder. Low fired ceramics with glazes much darker or lighter than the clay body will show chips easier. Rectified has to do with making the edges precise enough to fit smoothly together for less grout lines. So porcelain cost more to produce but it is more sturdy. All clay tiles should be vitrified.

u can go for athangudi cement tiles or even imported varieties available. athangudi tiles are originally from athangudi in tamilnadu. Depends on where u are based.

Hi Stephany, It is an acceptable job. Not saying that this is an ideal way to do it. Once it is grouted it would look better. Thanks, Nitin Cornerstone Designs, Bangalore.

Hello Ash, Jaipur Blue Pottery tiles are definitely suited for kitchen backsplashes and are heat resistant since they are fired in a kiln like other ceramics. I bought mine from a vendor in Jaipur, and got them shipped to Bangalore. Just make sure to be very very clear on what you want - hand-painted or screen-printed tiles; there is a big difference between the two. Happy to discuss further. Thanks, Gargi