Brilliantly

shining brightly; sparkling; glittering; lustrous:
the brilliant lights of the city.
distinguished; illustrious:
a brilliant performance by a young pianist.
having or showing great intelligence, talent, quality, etc.:
a brilliant technician.
strong and clear in tone; vivid; bright:
brilliant blues and greens; the brilliant sound of the trumpets.
splendid or magnificent:
a brilliant social event.
Jewelry. a gem, especially a diamond, having any of several varieties of the brilliant cut.
Printing. a size of type about 3½-point.
Contemporary Examples

Mike Leigh Is the Master Filmmaker Who Hates Hollywood Nico Hines October 13, 2014
Roger Corman: My Nine Most Memorable Films, From ‘The Trip’ to ‘Battle Beyond the Stars’ Roger Corman December 15, 2011
The Breathtaking Mosques of Istanbul Jolie Hunt January 8, 2010
Exploring the Amazon, While We Still Can Darrell Hartman May 14, 2014
Did McCain Bury the Truth about Russia? Gerald Posner November 12, 2008

Historical Examples

Elements of Structural and Systematic Botany Douglas Houghton Campbell
Robert Elsmere Mrs. Humphry Ward
Shock and Awe Harlan K. Ullman
High Adventure James Norman Hall
America’s Munitions 1917-1918 Benedict Crowell

adjective
shining with light; sparkling
(of a colour) having a high saturation and reflecting a considerable amount of light; vivid
outstanding; exceptional: a brilliant success
splendid; magnificent: a brilliant show
of outstanding intelligence or intellect: a brilliant mind, a brilliant idea
(music)

(of the tone of an instrument) having a large proportion of high harmonics above the fundamental
Also brilliant (French) (brijɑ̃), brilliante (French) (brijɑ̃t). with spirit; lively

noun
Also called brilliant cut

a popular circular cut for diamonds and other gemstones in the form of two many-faceted pyramids (the top one truncated) joined at their bases
a diamond of this cut

(formerly) a size of a printer’s type approximately equal to 4 point
adj.