Dear Cauvery mam,
I think you have posted in a wrong section, anyways the moderators will take care of it. Aswering to your post; i am not aware of the stores in Mumbai, but can help a lot with shopping in chennai.
Sarees:
For silk sarees the best choice is Nalli Silks, The best i had ever seen.This has an outlet in mumbai too but i am not sure about the collections in mumbai.Whereas in chennai it has a wide variety of collections and branches.
Next choice for silk saree is Kumaran silks, this is also nearby nalli, this has no branches still the collections are good.
There is another store called RMKV nearby Nalli and Kumaran u can try that also.
Daily wear sarees:
Both nalli & kumaran have a good collection of these sarees still there are other good stores like Naidu hall, Garden sarees, RMKV, Pothys etc.
Gold Ornaments:
My preference based on the quality and pattern varieties are as follows :
GRT - G R Thangamaligai;
GRT - a treasure house of India's finest Jewellery...; has a huge collection no doubt.
Kirtilalal Kalidas & Co., - Quite small still the quality is good, they do take orders and make it in a short time; especially diamond is good.
Bapalal - This too is famous for diamond,gold quality is also pure.
Silver Vessels:
One and only choice is GRT; same shop you can get gold and diamond ornaments too. Too good collections with good price ranges.
Stainless Steel Utensils:
Best choice is Rathna stores. It is in T.Nagar and Pondi bazaar. The stainless steel is good. We have been a customer for years and years.The prices are very much affordable.
Please do not fall in any other stores for getting stainless teel utensils for price reason. The price is worth in these shops.
Hope these details help you! Please do ask me if you want more details. thanks.