Zarnish is from the Persian zarnish (زرنش — golden glow, gold inlay). Zarnish Khan (born 1991) is a Pakistani actress — widely considered one of the leading contemporary Pakistani actresses of the 2010s and 2020s. Films include the Wrong No.
Zarnish 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 Zarnish reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.