Video game stat site needs icons for player leagues

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This customer received 19 icon designs from 6 designers. They chose this icon design from Lupe Design as the winning design.
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Icon Design Brief
Agora.gg, a stats/analytics site for Paragon (moba game) is looking for league icons for its player leagues. Players are ranked as Bronze, Silver, Gold, Platinum and Diamond. We currently display these ratings as a color, but would like to compliment them with custom icons.
I've attached an example of the job type, these are League of Legends league icons. We are looking for something more flat/vector, sharp and not as intricately detailed so that it can scale down without losing too much, but still really "cool" so that the players are happy when they move up in rank and get a better emblem. The quality / badass appearance of the icon should increase with each quality tier.
Please see the screenshot of our layout and consider the best approach. A large icon will be displayed next to their main Elo score (big text on the image) and a smaller icon next to each Elo in the live match section.
Updates
Project Deadline Extended
Reason: Insufficient submissions.
Added Wednesday, September 28, 2016
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.
Elegant
Bold
Playful
Serious
Traditional
Modern
Personable
Professional
Feminine
Masculine
Colorful
Conservative
Economical
Upmarket
Requirements
Must have
- 5 unique icons, one for each of our leagues (Bronze, Silver, Gold, Platinum and Diamond).
Nice to have
- Study the Paragon official site to get an idea of the game's UI / UX, we try not to stray too much from that https://www.epicgames.com/paragon/en-US/home