This paper focuses on making a novel Lanthanum Phosphate-based durable and cost-effective crucible for high temperatureapplications such as fabrication processes of advance functional materials. A crucible is designed and fabricated by using threeparts die following by powder metallurgical technique. Stepwise sintering was used to sinter the crucible. The synthesizedcrucible was then exposed to several tests to assess its structure, surface topography, durability, thermal expansion, andthermal shock resistance. Thermogravimetric analysis revealed a smaller mass loss of about 9.7%. Scanning electronmicroscope (SEM) analysis showed a spherical structure with pores enough to make a compact structure. It is also observedthat the Lanthanum Phosphate-based crucibles have high non wettability after pouring out the molten magnesium and foundthermal shock resistant. Interestingly, the crucible retained its original shape without failure up to 4 cycles. These results showthat the synthesized Lanthanum Phosphate-based crucible is promising for high temperature applications.