The Monart cloissone effect was achieved by dipping in a bucket of water and then blowing up to widen the cracks.
Crackling effects are done in the same way but have a different effect.
The stress cracks in Monart are due more to poor annealing than to co-efficient problems. These are faults not decoration techniques.
The orange vase here has a deliberate decoration effect and while it is certainly achieved by causing a difference in expansion, exactly how it was achieved is not clear. There is also a technique called stretching that exploits different temperatures of the layers to achieve another similar effect.
Whatever, theere are as many different ways of exploiting glass decoration during the making and many are developed by particular glassworks - perhaps because they saw the effect and found their own way of doing it.