"In a mine, where a million diamonds shine!"In real life, gem appraising, cutting, polishing, faceting, etc. is a multibillion dollar industry. Not so in fiction. Not only are they much bigger, they're just naturally flawlessly cut and perfectly shiny, even while they're still in the ground, or where there's no logical way they could have been cut. Characters will find these gems studding the walls of a mine, lying close to the surface, or lying casually in open fields. Bonus points if there's also clumps of different types of gem. Any place where they're abundant is usually a City of Gold. While tumbled pebble gems may look "polished," and really good mineral samples can have well-formed crystals, most of the ones commonly considered very valuable (diamonds, emeralds, sapphires and rubies) do require quite a bit of work to be presentable. In the rough, they look like all other dirty, randomly shaped rocks, so much as to be passed over as such by the untrained eye. The common gem shapes seen in jewelry stores aren't naturally present in any gem. The circular diamond with a pointed bottom, rectangular emerald, and perfectly rounded opal were designed that way to best showcase the gem (for instance, the "brilliant" cut for diamonds maximizes their sparkle by angling reflected light back through the top of the stone). This is probably an Omnipresent Trope. Subtrope to Artistic License – Geology. Related to the Rule of Perception (as many viewers would be unable to identify uncut gems as such without being explicitly told what they are) and Color-Coded Stones (when stones are only distinguishable from each other by explicit colors) and could lead to Reality Is Unrealistic. Not related to All-Natural Snake Oil. See also All That Glitters.
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- Superman in the Silver Age and Bronze Age was known for squeezing lumps of coal into diamonds. Aside from being bad science for other reasons, the diamond produced was always a cut diamond with facets.
- The Mole Man discovered an entire valley of giant diamonds, all perfectly exposed spires. They're so brilliantly cut the light they apparently generate underground blinded him, something he inflicts as punishment on unwelcome trespassers (read: everyone from the surface).
Film — Animated
Film — Live-Action
- In Congo, the diamonds in the ancient mine are already sufficiently well cut that one can be plugged straight into a commercial laser for huge power boost.
- Jurassic Park has someone pull amber out of a mine, and it is shiny already. All the miners did was grind off some of the rock in which the amber was encased.
- This occurs in Lloyd Alexander's The Chronicles of Prydain novel The High King. While going through a Fair Folk mine tunnel, Glew finds a large number of uncut gems that are sparkling, glinting and glittering. (Homage is paid to the trope though: Doli comments that those stones are really worthless, and even the work of a jeweler wouldn't improve them much.)
- In Andre Norton's Storm over Warlock, Shan and Thorvald find green crystals embedded in the cave as they flee through it. However, though the stones might have been worth a fortune, they hurry on, since they are fleeing for their lives.
- In Andre Norton's The Zero Stone, the Guild ship's landing brings up crystals that Jern can see at a glance, though he can't tell their worth.
- (Almost) Mentioned by name in Artemis Fowl, where Mulch carries a small bottle of dwarven rock polish, used to, well, make gems shine, whereas humans have to throw half of it away by cutting it.
- Inverted in the Sherlock Holmes short story The Adventure of the Musgrave Ritual. The sack containing apparently worthless broken bits of metal and colored stones turns out to be the lost crown of Charles I, priceless for its historical value alone.
- Inverted in the Hercule Poirot novel Hercule Poirot's Christmas. The murderer has stolen a fortune in diamonds and hidden them somewhere on the estate, but no one can find them. Poirot realises that the diamonds were uncut, and thus just look like pebbles to a bystander, allowing the murderer to hide them in plain sight in a plant pot.
Live Action TV
- In Outcasts, Carpathia's seas wash up bucketfuls of cut diamonds.
- In an episode of Saturday Night Live hosted by Christopher Reeve, there was a sketch showing how Reeve got the Superman part. He screws up the "turning coal into diamonds" bit by using too much pressure, but gets the part anyway.
- In an episode of The Adventures of Superman, Superman made a new diamond to replace a diamond in a native statue in the jungles of the Amazon.
- In Smallville, Clark squeezes a lump of coal into a cut diamond and uses his heat vision to set it in a ring for Lana. Of course, that whole episode ended up not happening.
- The diamonds in Congo are all shown shining brightly despite being raw and unmined; most of them are even pre-cut.
- In Burrito Bison: Launcha Libre, when activating Dr. Wormageddon, the gems found underground are already cut and polished.
- With the addition of mining for ores, The Elder Scrolls V: Skyrim allows the player to also occasionally find precious gems. Most of the time this trope is averted, with the gems being rough and flawed, but occasionally, the Dovakhiin can dig up a perfectly flawless, pre-cut gemstone. Out of an iron vein.
- The more primitive mining system from The Elder Scrolls III: Morrowind featured diamond veins that looked like elongated, beautiful bluish-white crystals poking out of a boulder. You can take cut diamonds from it.
- In EverQuest, mines feature naturally cut and polished gems.
- In The Legend of Kyrandia, gems are naturally cut and polished.
- Jazz Jackrabbit has enormous pre-cut gems inside the ground, too.
- In Mega Man 9, Jewel Man's stage has enormous pre-cut gems inside the ground.
- In Minecraft, while some materials, such as iron and gold, have to be mined as unrefined blocks and then smelted into usable forms, diamonds and emeralds pop out of the wall as the aforementioned symmetrical, visibly faceted lumps.
- Any jewel or precious stone mined in the Harvest Moon and Rune Factory series. Curiously, precious metals do not come already in bar form.
- During Kingdom of Loathing's 2011 Crimbo event, players could mine at the Gummi Mines, carving out rock candy that was "already in convenient ingot form".
- Its three other existing mines also sometimes have stones of eXtreme power or lumps of (cut) diamond in them, but considering they include ores like cardboard, linoleum or velcro, expecting gems to be cut is the natural thing to do.
- Almost all of the Pokémon Mystery Dungeon games involve a quest in which the heroes go into a sparkling gem cave.
- In Spelunky, gems mined from rocks are as much polished as ones found in treasure chests or on the ground.
- In Sword of Chaos, gems grow in mines naturally cut and polished.
- Partially averted in World of Warcraft. Gems meant for Socketed Equipment have to be cut by someone with the Jewelcrafting skill to be used (with the type of cut determining the type of bonus). On the other hand, many caverns have giant glowing crystals sticking out of the walls, and "simple" gems useful only as crafting ingredients or Vendor Trash often look like they're ready to wear when you mine them (e.g., the Azerothian Diamond).
- In My Little Pony: Friendship Is Magic, all of the gems Rarity finds are cut in various shapes. As are the ones Spike eats. Even the turquoise he eats in Appleloosa, while not cut into faceted shapes, appears as polished nuggets, which is not typical of turquoise found in real life.
- On The Simpsons, the mine run by a crazy Jane Goodall using enslaved apes in Africa has diamonds like this.
- In an episode of Ducktales, Scrooge buys a coal mine, and his nephews question why. Scrooge answers by tapping a particularly large chunk of coal (which was just lying around for some reason), and it collapses, revealing it was just a black crust surrounding a perfectly cut diamond, so large Scrooge can lean on it.
- Super Friends 1973/74 episode "The Mysterious Moles". The natural gems in the underground area Molesville are all faceted and shining.
- Used in Party Wagon, when the protagonists find the Lost Mine of El Glitterado. This turns out to be a subversion when one of the characters points out that the gems are already mined, cut, and polished, indicating that they were placed there before hand. It turns out the "mine" is actually an an outlaw hideout, and all the gems were stolen.
- No really, some crystals naturally do form gorgeous flat shiny facets in nature, just look at the inside of any geode. In fact for most of the human history involving diamonds, cutting or polishing a diamond was considered a sacrilege, a foolish boast by a human being who thought he could polish as well and perfectly as nature did.
- Gemstones that form inside what are called pegmatites really do this. The nature of a pegmatite is a pocket where lava flowed up towards the surface, but then subsided before actually reaching the surface, leaving a hole typically chock-full of rare elements from the lava. The elements then grow into crystals, which, since they are inside a hollow, have nothing to impede their formation and take on large naturally faceted shapes. Quartz in many varieties, topaz, and tourmaline all form inside pegmatites this way. Geodes are essentially really tiny pegmatites while large ones are worth hundreds of thousands of dollars.
- Diamonds will naturally take on one of three shapes: an octahedron, a cube or (rarely) a dodecahedron. Octahedrons are often well-formed and clear, and good specimens that naturally facet themselves are called "glassies" and highly sought by collectors.
- Garnets naturally form polished dodecahedrons, but as garnets aren't super-hard and form under great pressure, the edges tend to get worn.
- Rubies and sapphires have a natural triangular structure, but due to cyclic twinning rubies typically form nice faceted hexagonal prisms, while sapphires take the shape of long spindled double-pyramids with six sides.
- Though too soft for most jewelry purposes, fluorite is dearly loved by collectors because it naturally forms extremely exact cubes often combining many colors into one specimen.
- Calcite has more possible crystal habits than almost any other gem and can come in all sorts of natural gem-polish shapes.
- Ultimately almost every single gemstone (aside from a few aggregate types like malachite, opal, and jade) can do this. If the gem comes in a crystal-clear variety (aggregates are usually translucent to opaque), odds are it will form All-Natural Gem Polish at least once in a while. Specimens that do so in particularly good formations are usually too valuable to cut and are kept in their natural state by collectors.
- Still, the shapes most people are familiar with are not the natural crystalline forms of any of the stones. So even if you do come across a naturally polished specimen, it's probably not going to look like what you think it will.
- Herkimer "diamonds" are a form of naturally occurring, double-terminated faceted quartz that really do resemble cartoon gem mining, and even often appear singly in the rough brown dolostone they occur in.
- This was part of how the semi-famous 'Diamond Hoax of 1872' was revealed: geologist Clarence King, while surveying the supposed 'motherlode' noted, among other factors, that all the gems planted by the con men Arnold and Slack had been cut and polished.
- When Lina is going through her loot after raiding a bandit hideout in the first season of Slayers, she notes that a large number of the gems are flawed and not worth much. She then enchants them into protection amulets so that she can sell them for more.
- Phule's Company had a Lampshaded aversion. Phule's dialogue with the local gemstone magnate goes like this:
Charlie: In fact, I've got 'em with me if you'd like to see. (shows a handful of pebbles)
Phule: Uh... Very nice.
Charlie: (shows his ring) ...This is what they end up lookin' like.
Phule: (really meaning it this time) Very nice.
- In The Phantom Tollbooth the Numbers Mine is of the ordinary sort. Carts of rough stone are being pushed around, and men are explicitly sitting at buffing wheels on site. The Mathemagician has to reach into their carts to get polished stones. The weird thing is that the residents of Digitopolis consider diamonds, emeralds, etc. to be worthless, yet they still polish and cut them before tossing them out.
- In the second Artemis Fowl, Mulch Diggums uses dwarfish rock polish to melt a window to break into a home; he pauses in his internal monologue to mock humans as he does so, for cutting gems to make them presentable, which he considers to be a waste of gemstone.
- A good portion of Airman takes place at a prison where the prisoners mine diamonds. At one point, a guard frustrated at being unable to stop a supposed boogeyman starts chucking uncut diamonds into the sea, thinking they're just rocks. A smarter guard notices them for what they are, and realizes the "boogeyman" is actually part of a heist.
- In Twenty One Balloons, the diamond mine of Krakatoa is explicitly stated to have the diamonds as lumpy rocks. The founder of the island has to shatter one of them into planes to form an axe blade.
- In King Solomon's Mines the cache of diamonds is composed of uncut and rough-cut stones, the largest of which are badly flawed and/or off-colour.
- The chasmfiend gemhearts in The Stormlight Archive are specifically noted to be uncut. This is an important plot point, as cut gems hold Stormlight better. No one knows why.
- While observing Uloiho the goldsmith's "gem room"note , Wolfhound notes for himself that while the room layout and its contents are geologically accurate, the Real Life mines and jewels don't looks even a tiniest bit that tidy and polished.
Live Action TV
- In the New Tricks episode 'Diamond Geezers', the reason that the diamond at the centre of the episode has lain undiscovered in a flat in East London for decades relates to the fact that the flat's owner, a jewelsmith, was too nervous to cut it; it looks just like a large red gem and most people treat it as such (though a jeweler's assistant does identify it as a diamond after a quick look.) Does kind of count as Treasure Is Bigger in Fiction, though, as it's about walnut sized and red.
- In the Elementary episode "The Leviathan", Holmes notices that some of the stones are missing from a coffee-table decoration comprising glass tubes of different-coloured gravel, and deduces that this is where the uncut gems were hidden.
- In an episode of the ITV version of Sherlock Holmes, a court case where Sherlock is being framed relies on him having taken some diamonds. The witness confirms that she saw the gems before they were stolen and describes them as beautiful and shiny. Sherlock is able to prove she is lying as the gems were uncut and looked like ordinary, dull stones.
- In the Relic Hunter episode "Afterlife and Death", a diamond from 1500 B.C. has an irregular shape and the fact that it has to be cut and polished now to be considered beautiful plays a big part in the plot.
- RuneScape: Mined gems are uncut. In order to use them in jewelery, the Crafting skill is required to cut them first. It also gets into the realistic zone in that the gems don't just lie on the ground but have to be mined - and in that certain gems are found with certain ores.
- The dwarves in Dwarf Fortress mine out rough gems that need to be cut before they're usable. The later versions even have different kinds of cuts, depending on the type of gem.
- The Sims 3 includes rough gems (and unrefined ore) scattered around the town that sims can pick up and send away to be cut into numerous different designs. Some gems have special properties that can't be used until after they've been cut.
- In Harvest Moon: Animal Parade, as well as the previous entry in the series Harvest Moon: Tree of Tranquility you find uncut "Wonderfuls" of various colors in the mine. They're next to worthless unless you have Mira cut and refine them, and she has a good chance of failing, too, meaning you'll want to mine a lot if you want to find all the good gems.
- Diablo II's socketed items can be fitted with gems of many grades, the lowest being Chipped and the highest being Perfect. The game also has the refining process present in the Horadric Cube.
- This trend continued in Diablo III where the icons for lower quality gems are jagged and murky-colored compared to higher quality examples.
- World of Warcraft has an entire Jewelcrafting profession available in which the player takes raw gemstones and grinds and polishes them into something usable in Socketed Equipment. Jewelcrafting also gives the prospecting skill that allows a player to sacrifice raw metal ore for random gems (that are sometimes more useful and sometimes less useful for Item Crafting compared to the ore). Raw gems added to the game after the profession was introduced also look unrefined, only gaining clear colors and smooth facets after being cut.
- In Nancy Drew: The Secret of Shadow Ranch, getting an agate properly polished is actually necessary to obtain a clue.
- In the flash game Ravenwood Fair, gems fresh from the mine are uncut and lumpy. A machine to cut and polish them must be obtained by completing challenges.
- In Arcanum, not only all the gems are either found in chests or obviously dropped on the floor by somebody, but there are rough jewels, which look like misshapen shards of coloured glass and, of course, cost less.
- In A Tale In The Desert, not only do you have to carefully cut gems yourself, plane by plane, you have to take advantage of inherent flaws to get any concave aspects.
- RF Online allows the player to obtain various gems through processing unrefined ore, with different tiers of ore resulting in different qualities of gem. However, a player can literally go through hundreds of ores before receiving any gems (however given that a player can haul in a few thousand at a time, this is usually not an issue).
- Hexen II: Gems that the player collects have to be cut before they can be used to power the big zodiac wheel thingy.
- Spyro the Dragon features a lot of gemstones, scattered around the world. However, it's confirmed that this is the stolen and scattered treasure hoards of the dragons, similar to Fort Knox in America. The size can probably be attributed to magic. Interestingly, the most valuable gems, purple (worth 25 treasure), appear to be amethyst, staple of any gem collection and a derivative of quartz (which is literally common as dirt).
- The second game Spyro 2: Ripto's Rage! zig-zags this trope. The first level has massive, perfectly-cut gemstones jutting from the ground, and the native creatures known as the Gemcutters presumably have the job of cutting and processing the giant gems into smaller, usable ones.
- In 'World's Dawn'', you can dig up stones with varying degrees of shininess, but they're not worth much until you cut them at the table outside the mine.