What is nephrite jade worth per gram?

Answer 1

Per gram, depending on the quality, thousands upon thousands

Answer 2

General USD 2009 pricing

Determining the Nephrite Jade Type:

You need to be familiar with the different types of jade and the criteria.

THE CRITERIA OF NEPHRITE (non-translucent jade):

Whether or not the nephrite jade is magnetic.
The color of the jade - black, dark green, apple or light cream
Appearance: Does it have sparkles in it?

TYPES OF JADE and Pricing:

There is mutton type jade which is light in color, creamy with some
pink inclusions. Some say it's worthless, others say it's $75.00 lb or higher.

There is dark green jade which has a higher iron content
that will respond to a magnet. This is low grade nephrite.
This goes for as low as $2.00 /lb.

However, black jade, which has flowed it's way into Germany, is
considered rare if it's not magnetic, I don't know the price, it is rare
however.

Apple Green Jade is worth at least $50.00/lb. if it's not magnetic.

The things that degrade the nephrite jades worth is if there is sparkles in it.
This indicates mica and/or iron present in it which is considered to be an impurity.
If it isn't highly magnetic this type is worth $2.00 - $3.00 per pound, and as low
as a single dollar.