The Gemstone range, is the backbone of the Thermals Spas range, with five modern and stylish models to choose from. Jets: 76 Persons: 7 Pumps: 3 x 2HP Lighting: LED Music: Bluetooth Heater: 3KW Power: 32 amp. The Gemstone range offers great design layouts with an array of different sizes to accommodate most family requirements. The range comes with Bluetooth music, LED Lighting and water features - Featuring R10 Full Insulation Technology. 280 × 230 × 96 cm.