Ramya> Emma ... is in fact, ready to admire beauty and elegance in others

Call me cynical, but I think Emma is often cynical with her outward use of those terms of praise. She uses them as conversational tools, either to serve her own ulterior motives, or to deflect someone else's questions.

Here are some examples of ulterior motives. When she asks Harriet about Robert Martin's looks (ch4), she's looking for leverage to separate them. When she asks Miss Bates about Mrs Dixon's looks, she's trying to prop up her ingenious and animating suspicion (ch19).

Here are some examples of deflection. When she praises Jane Fairfax's elegant appearance, it's in the context of wishing to appease Mr Knightley's anxiety with a sincerity which no one could question (ch21). She steadily uses the phrase "elegantly dressed, and very pleasing" (ch32) to describe Mrs Elton, to avoid sharing her actual views about the difference between ease and real elegance.

Emma's particular liking of Harriet's style of beauty (ch3) and fascination with Jane Fairfax's appearance on seeing her again (ch20) seem more genuine, but I think that we only glimpse that genuineness occasionally.