Rihanna's 777 Tour: Photo Highlights
Rihanna performs at Plaza Condesa during her 777 tour on November 14, 2012 in Mexico City.

See our full report from Day 1 of Rihanna's 777 Tour.

RiRi registers the latest rock-era-appropriate chart-topping title.

Rihanna is giving new meaning to the term "rock era."

As "Diamonds" reaches the top of the Billboard Hot 100, the song joins the list of geologically-inclined No. 1s in the chart's 54-year history. (The rock era predated the survey's launch, with Bill Haley & His Comets' "(We're Gonna) Rock Around the Clock" marking its accepted start in 1955.)

With "Diamonds," Rihanna's 12th Hot 100 leader, taking its place at the summit, here's an updated look at rock- and gemstone-related No. 1 titles in the chart's archives:

"This Diamond Ring," Gary Lewis and the Playboys, 1965
"Ruby Tuesday," the Rolling Stones, 1967
"Papa Was a Rollin' Stone," the Temptations, 1972
"Crocodile Rock," Elton John, 1973
"Rock the Boat," the Hues Corporation, 1974
"Rock Your Baby," George McCrae, 1974
"Rock Me Gently," Andy Kim, 1974

"Lucy in the Sky With Diamonds," Elton John, 1975
"Rhinestone Cowboy," Glen Campbell, 1975
"Rock'n Me," Steve Miller, 1976
"Rock With You," Michael Jackson, 1980
"It's Still Rock and Roll to Me," Billy Joel, 1980
"I Love Rock 'N Roll," Joan Jett and the Blackhearts, 1982
"Rock Me Amadeus," Falco, 1986
"Rock On," Michael Damian, 1989
"Party Rock Anthem," LMFAO featuring Lauren Bennett & GoonRock, 2011
"Diamonds," Rihanna, 2012

"Diamonds" marks Rihanna's second rock-referencing Hot 100 entry. Her "Rated R" album cut "Rock Star," featuring Slash, reached No. 64 in 2010.

Any discussion about such Hot 100 hits wouldn't be complete without a mention of Sa-Fire, who rose as high as No. 12 with "Thinking of You" in 1989. In 1997, Jewel reached a high of No. 2 with "You Were Meant for Me." Thirty-two years earlier, Jewel Akens had peaked at No. 3 with "The Birds and the Bees."

And, while a title including "diamonds" appears atop the Hot 100 for the first time since Elton John's "Lucy in the Sky With Diamonds" reigned the weeks of Jan. 4 and 11, 1975, and for just the third time overall (Gary Lewis and the Playboys' "This Diamond Ring" reigned in 1965), the word has also appeared at the apex courtesy of Neil Diamond's three toppers: "Cracklin' Rosie" (1970), "Song Sung Blue" (1972) and "You Don't Bring Me Flowers," with Barbra Streisand (1978).

"Rock"-music aside, Rihanna continues her quest toward the most No. 1s in the Hot 100's history. Now with 12, she's within eight of the act with the most leaders, the Beatles ... originally known as, of course, the Quarrymen.

ROLLING ALONG: Speaking of the Rolling Stones, as the band celebrates its legendary first 50 years, its latest greatest hits album "GRRR!"arrives on the Billboard 200 at No. 19. "GRRR!" follows the iconic act's 40th anniversary best-of package, "Forty Licks," which debuted at No. 2 the week of Oct. 19, 2002.

More evidence that the group is gathering no moss: "GRRR!" lead single "Doom and Gloom" becomes the Stones' first top 10 on the Heritage Rock airplay chart (20-9) since 2005, when "Oh No, Not You Again" reached No. 6.

Since its posting on Tuesday (Nov. 20), the (not quite SFW) official video for "Doom" has garnered close to 1 million YouTube views.

ALWAYS LOVED: Rihanna passes Whitney Houston for the fourth-most Hot 100 No. 1s (12 vs. 11) but the late latter star's Billboard album chart discography notably expands.

Houston's second greatest hits album, "I Will Always Love You: The Best of Whitney Houston," debuts at No. 14 on the Billboard 200 and No. 2 on R&B/Hip-Hop Albums.

As Billboard 200 chart manager Keith Caulfield notes, the set is Houston's first compilation to include all 11 of her Hot 100 No. 1s in their familiar hit versions. Her only other U.S.-released best-of set, "Whitney: The Greatest Hits," offered many of her ballads but featured remixes of her uptempo singles in place of their better-known original versions. That album debuted at No. 5 the week of June 3, 2000. It reached a new peak of No. 2 for three weeks earlier this year following her passing on Feb. 11.

'SNOW' STORMS AC: As Barry Manilow celebrates his milestone 50th Adult Contemporary hit, a fellow format vet adds to his lofty total.

Rod Stewart arrives at No. 18 on AC with "Let It Snow, Let It Snow, Let It Snow." The carol marks his 42nd entry on the survey, although it's just his third seasonal hit. "Baby, It's Cold Outside," featuring Dolly Parton, rose to No. 2 in 2004 and "I've Got My Love to Keep Me Warm" peaked at No. 22 in 2006.

"Snow," from Stewart's first holiday album, "Merry Christmas, Baby," which bowed at No. 3 on the Billboard 200 two weeks ago, ends Stewart's longest hiatus from the AC chart dating to the arrival of his first entry, the No. 42-peaking "Tonight's the Night (Gonna Be Alright)," the week of Oct. 30, 1976. He had last appeared with the No. 13-peaking "Fooled Around and Fell in Love" in 2007.

DO YOU REMEMBER?: Chart Beat reader Larry Cohen of Trumbull, Conn., writes in noting a coincidence between the titles departing and entering the Hot 100 and Billboard 200 summits, respectively, and one of the '80s most dependable hitmakers.

"While it may have been awhile since we've heard new music by Phil Collins, the titles of two of his hit songs appear at the upper ranks of Billboard's two signature charts this week," Cohen points out. "His 1985 Hot 100 No. 1 'One More Night' shares its name with Maroon 5's song which falls from the chart's top spot after nine weeks.

"Meanwhile, Collins' No. 7 hit from 1986, 'Take Me Home,' doubles as the name of this week's new Billboard 200 No. 1 by One Direction."

Another Maroon 5/Collins connection recently resulted in a Collins-penned title returning to a Billboard tally. Two weeks ago, Trevin Hunte logged a frame at No. 18 on R&B Digital Songs with his cover of Collins' 1984 No. 1 "Against All Odds." Hunte is a contestant on NBC's "The Voice," on which Maroon 5 frontman Adam Levine serves as a coach.