These two trips to the fire giants were done with the same items going in, along with the same levels. Here's a breakdown of what each trip was worth. The first column is the item, the second is how many, and the third is the value. If the Grand Exchange price of an item is not available, the high alchemy price will be used.
=== First Run ===
Guam 1 465
Marrentill 3 282
Tarromin 2 474
Harralander 1 709
Uncut Sapphire 1 573
Mithril Square Shield 1 936
Fire Rune 750 6750
Blood Rune 5 1510
Chaos Rune 10 1370
Gold Charm 25 1500
Green Charm 1 60
Blue Charm 1 60
Coins 1425 1425
Total 2226 16114
=== Second Run ===
Guam 3 1395
Marrentill 2 188
Uncut Sapphire 1 573
Runite Scimitar 3 91014
Mithril Square Shield 1 936
Fire Rune 674 6066
Blood Rune 5 1510
Chaos Rune 15 2055
Gold Charm 24 1440
Green Charm 2 120
Blue Charm 1 60
Coins 1910 1910
Total 2641 107267