A few small diamonds were produced, but not of gem quality or size.

But I can't guarantee that it's all gem quality.

He'll send the gem quality nuggets out to some of the professional shows and give us straight bullion prices on the dust.

Little of the output is gem quality, so nearly all the production is used in industry.

There was the gem quality of a total being.

Perfect crystal of gem quality, deep black, smoky quartz, several feet in length have been found in the area.

Catching the glow from the wall lamps beside the dressing table, the green stone sparkled with true gem quality.

Yes, even a humble snail sometimes yields a pearl of gem quality.

Since really nice uncirculated specimens are rare, they command $400 in "gem quality."

Sapphires of gem quality are found in the region.