while a one carat (1.0 ct .) good quality emerald may sell for somewhere between $525 and $1,125, a five carat (5.0 ct .) emerald of similar quality could sell for between $7,500 and $15,000 ( prices are for comparison only, exact prices vary according to market demand).
So no it is not complicated - stay with small stones - trade frequently .
• The jewellier on the corner will do it.
• Get a internet offer for your stone below