When Ves concluded his awkward conversation with his angry cat, Ves left the bridge so that he could take a closer look at Lucky's gems.
The gems all looked malformed and distorted in a way that just looked wrong to Ves.
Although none of the gems gave him the vibe that they were unstable to the point where throwing them at a bulkhead would cause them to explode, they still triggered his sense of danger.
Ves could not treat these gems like almost all of the other ones that Lucky had produced in the past.
The gem cat normally did a good job in producing solid gems with clear positive benefits and no discernable risks.
That meant that Ves never had to worry too much about imparting any significant negative consequences to the mechs that bore his gems.
If Lucky's gems truly posed a significant risk to the mech or the pilot that would be making use of the upgraded machine, then the Quint would have gone utterly crazy by this time!