Rhodochrosite sailed through Round 1 to the rallying cries of “Meat rock, meat rock!” for its bacon and ham-like appearance in cut and polished segments of stalagmites and stalactites. The National gem of Argentina also forms delicate crystals, and lovely arrangements such as beautiful rosettes, and zoned botryoidal masses.

Quartz everlasting is resistant to weathering and is often the only mineral left after the erosion of local rocks. Quartz forms the white sand beaches that beckon sunbathers, and the white sedimentary rocks formed from ancient sand dunes. Quartz and earthquakes also drive the formation of gold nuggets.

Will voters again sink their teeth into Rhodochrosite appetizing rose-colored delight? Or will Quartz’s wide array of tricks be enough to weather this battle to continue to the next round?

Read campaign highlights from the Round 1 matches won by Rhodochrosite and Quartz.

Voting for each match starts and ends at 06:00 GMT. Due to site limitations, the polls will continue to be visible until manually closed by volunteers, but only votes cast in the 24-hour period will be tallied.