Raluca is from the Romanian Raluca — Romanian rendition of Răluca / Heruvica — possibly from the Greek Heruvika (cherubic) or from a Romanian-medieval contraction of Smaragda (emerald). Raluca is one of the Romanian feminine names — central to traditional Romanian Orthodox heritage.
Raluca does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Raluca reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.