The team was founded in 2025 and is scheduled to play in the inaugural Women's Elite Rugby season.

"[2] The black onyx which is also mined in the state "represents strength, courage and determination symbolising the sheer grit and resilience of these athletes."

The logo features gemstones in these contrasting colors of black and bright pink.

[2] Former Eagles representative, Sarah Chobot, was appointed to be the first head coach of the Denver franchise.

[3] Denver Onyx named Erica Coulibaly, Rachel Ehrecke, McKenzie Hawkins, Maya Learned, and Tahna Wilfley as their five foundational members.