The higher the percentage of blue color present in a Blue Gem, the more highly the pattern index is regarded within the community. Ideally, a Tier 1 Blue Gem should have a full blue playside, with no traces of yellow being present.

The Blue Gem patterns of the Kukri Knife Case Hardened are listed in tiers. Meaning Tier 1 patterns are considered to be the best while Tier 4 patterns are considered less valuable due to there being less blue on the blade. As can be seen, the pattern index 494 is the best Blue Gem for a Kukri Knife Case Hardened. Other notable high-tier patterns include the pattern indexes 575, 770

652, 618, 917, 844, 112, 891, 838, 868, 510, 330, 631, 985, 808

130, 283, 335, 721, 798, 702, 841, 371, 38, 881, 638, 811, 643, 682, 61

468, 664, 182, 629, 989, 488, 334, 823, 426, 282, 73, 515, 694, 547, 916, 858, 749, 854, 630, 499, 375, 256, 442, 961, 116, 919, 306, 902, 853, 522, 776, 411, 92, 809, 262, 612, 885, 505, 398, 528, 194, 576, 711, 642, 883, 768, 708, 34, 414, 347, 657, 14, 713, 74, 698, 453, 273, 89, 188, 457, 98, 907, 616, 800, 42, 263, 243, 244, 175, 318, 305, 134, 281

803, 782, 788, 497, 269, 322, 964, 965, 176, 321, 236, 108, 658, 56, 905, 470, 310, 556, 214, 860, 20, 27, 622, 445, 976, 134, 72, 927, 875, 4, 387, 852, 429, 828, 177, 341, 753, 557, 147, 458, 507, 311, 849, 816, 953, 633, 153, 955, 109, 866, 191, 899, 541, 888, 609, 846, 924, 935, 106, 598, 55, 509, 914, 25, 775, 637, 670, 358, 958, 741, 942, 57, 381, 138, 245, 397, 820, 801, 513, 208, 542, 780, 563, 596, 179, 339, 320, 377, 11, 395, 101, 655, 717, 700, 254, 53, 672, 29, 168, 928, 254, 365, 727, 85, 826, 297, 918, 463, 483, 527, 416, 893, 248, 478, 545, 697, 548, 396

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