Science prompt
Name a precious gemstone — Best Krillion Answers
Facing “Name a precious gemstone” in a dive? Here is how to think rare: the best picks, the safe backups, and the crowd defaults to avoid. Every answer below is real and valid — rarity decides the tier.
Best rare pick: Tanzanite — specific, valid, and uncommon enough for Deep Cut or better.
Avoid (Plankton): Ruby, Diamond — correct, but the crowd's first thought.
One in a Krillion — 100 pts
The rarest valid answers — maximum depth.
Tanzanite · Alexandrite
Deep Cut — 85 pts
Extremely rare picks most players miss.
Opal · Topaz
Rare — 60 pts
Genuinely uncommon — strong scoring.
Amethyst · Aquamarine
Schooler — 30 pts
Known but not top-of-mind.
Garnet · Pearl
Too Clever — 15 pts
A bit too obvious.
Sapphire · Emerald
Plankton — 10 pts
The crowd's default — avoid these.
Ruby · Diamond
How to play this prompt
Strategy notes specific to “Name a precious gemstone” — not generic advice.
Science prompts punish approximations. Name it exactly and you dive deeper.
Lead with Tanzanite. It's the kind of answer that makes other players say 'I knew that!' after the reveal — which is exactly why they didn't type it. Opal works the same way if you want a second bullet in the chamber.
Watch out for Ruby. It's valid, but validity isn't the game — rarity is. Diamond has the same problem: everyone knows it, so everyone types it, so it scores like everyone.
The middle of the bank tells the real story: Amethyst lands in Rare while Ruby sits in Plankton — same prompt, wildly different rarity. That gap is exactly where the points hide.
Build yourself a mental shelf for this prompt: Topaz, Aquamarine, Opal. They're different answers, same rarity neighborhood — and that neighborhood is where dives are won.
Rated 4/5 difficulty — only 12 banked answers, so matching the bank is genuinely hard. Precision matters more than speed here.
Related prompts
More Science prompts to train on — same rarity thinking, new answers.