It was another bitterly disappointing home display from the Steelmen as they fell to a second, successive home defeat against the visitors from North Wales.
After a brilliant first half of the season, Ebbw needed just a win to secure the top spot in the SRC, but were lacklustre and error-ridden throughout, and will need to improve in the play-offs.
Playing against the wind first half, Ebbw's kicking game was poor and RGC deservedly went into the break ahead 6-3.
After the interval, home supporters' nerves were eased when the trusted 'catch n drive' did the job, with top try scorer hooker Ieuan Morris crashing over with the extra two points added, making it 10-6.
Unfortunately, this was as good as it got for the home side. Ill discipline, poor tackling and a general lack of intent, led to the visitors scoring two good tries and heading back north with their first ever win at the Ciner Glass.