It requires a total of 729 Flawless Squares, 1631 Tomes of Secret, and 15,400,000 gold to make a single Radiant Star, not counting the gold required to upgrade the Jeweler in the first place, or to obtain the three highest level plans for each gem. Even assuming you had all the Flawless Squares, Tomes of Secret, and over 15 million gold in your stash, creating a Radiant Star would still take you 243 clicks on the Jeweler's upgrade bar. At 3 seconds per click, that's 729 seconds, or close to 12 minutes doing nothing but upgrading gems.
<!--This table is also in [[{{Template:Gem upgrade costs]], be sure to update that too if you alter any information -->{| border="1"! Gem Result! Gold Cost! Gems Required! Materials! Cumulative Cost|-| Chipped| N/A| N/A| N/A| Find them.|-| 1 Flawed| 10 gold| 2 Chipped| None| Find them.|-| 1 Regular| 25 gold| 2 Flawed| None| Find them.|-| 1 Flawless| 40 gold| 2 Regular| None| Find them.|-| 1 Perfect| 55 gold| 2 Flawless| 1 page of Jewelcrafting| Find them.|-| 1 Radiant| 70 gold| 2 Perfects| 1 Page of Jewelcrafting| Find them.|-| 1 Square| 85 gold| 2 Radiant| 1 Tome of Jewelcrafting| Find them.|-| 1 Flawless Square| 100 gold| 2 Squares| 1 Tome of Jewelcrafting| Find them.|-| 1 Perfect Square| 30,000 gold| 3 Flawless Squares| 3 Tomes of Secret| 30k gold & 3 ToS<br>(3 Flawless Squares)|-| 1 Radiant Square| 50,000 gold| 3 Perfect Squares| 6 Tomes of Secret| + 30k gold & 3 ToS<br />+ 30k gold & 3 ToS<br />+ 30k gold & 3 ToS<br />+ 50k gold & 6 ToS<br /><nowiki>= 140k gold & 15 ToS</nowiki><br />(9 Flawless Squares)|-| 1 Star| 80,000 gold| 3 Radiant Squares| 9 Tomes of Secret| 140k gold & 15 ToS<br />+ 140k gold & 15 ToS<br />+ 140k gold & 15 ToS<br />+ 80k gold & 9 ToS<br /><nowiki>= 500k gold & 54 ToS</nowiki><br />(27 Flawless Squares)|-| 1 Flawless Star<br />| 100,000 gold| 3 Stars| 12 Tomes of Secret| 500k gold & 54 ToS<br />+ 500k gold & 54 ToS<br />+ 500k gold & 54 ToS<br />+ 100k gold & 12 ToS <br /><nowiki>= 1600k gold & 174 ToS</nowiki><br />(81 Flawless Squares)|-| 1 Perfect Star| 200,000 gold| 3 Flawless Stars| 15 Tomes of Secret| 1600k gold & 174 ToS<br />+ 1600k gold & 174 ToS<br />+ 1600k gold & 174 ToS<br />+ 200k gold & 15 ToS<br /><nowiki>= 5000k gold & 537 ToS</nowiki><br />(243 Flawless Squares)|-| 1 Radiant Star| 400,000 gold| 3 perfect stars,| 20 Tomes of Secret| 5000k gold & 537 ToS<br />+ 5000k gold & 537 ToS<br />+ 5000k gold & 537 ToS<br />+ 400k gold & 20 ToS<br /> = 15400k gold & 1631 ToS<br />(729 Flawless Squares)|}}<!--This table is also in [[Gem upgrade costs]], be sure to update that too if you alter any information -->
==Full List of Gem Properties==
