If the same as in the OP photo, it was correctly identified as Duranta erecta and very likely the cultivar 'Sapphire Showers'. It is subtropical in origin and will not survive a New England winter in the ground. Rated to only zone 10 but can take a light frost.

The Spring weather here had been very cool & wet, high temp sometimes not even 60. GB slowly grew it's bud and was slowly opening. Absolutely beautiful & I could see why Paul Barden named it "Golden Buddha." That morning, it was warm & dry and the bud was about half open & releasing a delicious scent. Scent reminded me of those pastel sweet-tart candies. It seems like I remember the flower having a messy petal arrangement all along. Temp that day hit upper 80s & by next morning the bud was blown. It hung around on the plant for maybe 3 days & retained scent even when petals began to brown. My canes are still very skinny, but there is new lateral cane formation in several places, new leaf growth & possibly a new basal cane. Basal cane could have already been forming & was so small I didn't see it when planted. Canes & foliage have a delightful "wild rose" look about them. I notice Christopher's plant looks more like a classic hybrid tea/floribunda; perhaps with age the rose loses that wild look. I can post photos, if you want to compare the plant form with yours.

are you otherwise in india??? be nice if you could add your location to your Id name ... like the rest of us ... when you said you visited.. i presumed you left india .. but another post seems to make me think otherwise ... ken

Silene armeria usually has its flowers in multiple clusters. This plant has single blooms? It looks like maybe there would be small clusters if the other bud stems weren't drooping down. I have to question if there could be a problem with the health of the plant. It's in a very small pot, and I think silene roots run deep. Usually when I buy these plants they come in the extra tall pots to accommodate the roots. Can the term in situ apply to a plant in a pot, or just to one that's growing in the ground? The plant does have a beauty to it, in a slightly tortured kind of way.