praveka
praveka — superior quality; SB 2.9.11
maṇi-praveka — glowing effulgence of the valuable stones; SB 3.8.6
maṇi-praveka — highly valuable jewels; SB 3.8.29
praveka — with excellent; SB 5.24.9
praveka — by use of the best; SB 7.8.19-22
praveka — excellent; SB 10.50.25-28