Continuity mistake: At the start of the film, as Sarah runs across the bridge, there is a curve in the right side of the river bank which is just grass. However when Sarah runs back across the bridge, that area is now filled with bunches of tall white flowers. (00:02:45 - 00:03:55)
Continuity mistake: When Sarah is at the park reciting the Labyrinth play, she has stud earrings in each ear. When she arrives home and then argues with her mum, they have gone. (00:03:10 - 00:05:25)
Continuity mistake: In the park, Sarah begins reciting the lines, "Through dangers untold...beyond the Goblin City..." and her hair in back is pulled up very loosely in her barrette, seen clearly as she speaks. Yet in the shot of her back, when Merlin barks, her hair is twisted perfectly in the barrette. (00:03:20)
Continuity mistake: In the park, Sarah looks up when she hears thunder and in the front shot the headpiece ribbons are in front of her left shoulder. In the next back shot both sides are behind her shoulders, yet in the following front shot the left ones are in front again. (00:03:35)
Continuity mistake: When Sarah arrives home with Merlin, she talks to her mom for a while. The white straps that hang down from her flower headband alternate from hanging in front to behind her shoulders during the shots. (00:04:40)
Continuity mistake: As Sarah runs up to the porch, her mom says "Oh, really!" and she is holding some clothes below her waist. But in the next shot, she is holding them up by her waist. (00:04:40)
Continuity mistake: When Sarah arrives home, her hair is tied back in a barrette, with no loose hair hanging from it. As soon as she walks inside, there is suddenly a lot of loose hair which has fallen out of the barrette between shots. (00:04:55)
Continuity mistake: After Sarah runs up the stairs and shouts, "I can't do anything right, can I?" in the next two close-ups of her stepmother, the foyer table stands on an area rug with multi floral at the edge, inner red floral and a center floral medallion. As the camera pans out in the next shot, the table stands on the medallion, whereas in the previous close-ups it stood farther over, on the red. (00:05:35)
Continuity mistake: When Sarah is putting lipstick on, the newspaper clippings and photos on her mirror change position and arrangement between different angles and shots. (00:06:05)
Continuity mistake: When Sarah's father talks to her when she is in her bedroom, there is a shot of the door and the walls at both sides. One wall can be seen in the reflection as Sarah sits at the vanity table in more than one shot. When Sarah runs out of her bedroom to retrieve Lancelot the walls are seen again. The position of certain things in all shots change or disappear altogether. (00:06:20)
Continuity mistake: When Sarah leaves her room, because she realises Toby has her teddy she leaves and swings her door open. But when she leaves Toby's room, her bedroom door is shut, and her parents couldn't shut it as they're out. (00:06:40 - 00:09:55)
Continuity mistake: When Sarah angrily goes into Toby's nursery to retrieve Lancelot, as she screams, "I hate you!" to Toby, who is in the crib, the crib's legs are visible and there are NO casters (wheels) attached to the legs. However, in the rest of the shots, whenever visible, there are ball bearing casters on the legs of the crib. (00:06:50)
Continuity mistake: Depending on the angle of the shots, things on top of the changing table and its shelves behind Toby's crib change position or disappear. The string toy that hangs in Toby's crib changes and also changes position. The wicker hamper basket changes position and the clothes that hang from it change as well. (00:07:00)
Continuity mistake: When Sarah goes into Toby's room, and picks up Lancelot, she puts the teddy on her parents' bed next to her, then sits down. In the next shot, the teddy is behind her on the bed and it can be seen when she stands up. (00:07:00)
Continuity mistake: In her father's bedroom when Sarah says, "And the young girl was practically a slave," Lancelot is seen behind her on the bed as she gets up. Yet when Sarah says, "And she was hurt by the harsh words of her stepmother..." the bear is now at the edge of the bed. (00:07:35 - 00:08:25)
Continuity mistake: When Sarah is telling the story to Toby, she stands in front of the mirror, and puts Toby's stripy hat on. In one shot, she pulls it to the back of her head, but in the next shot, it's pulled down on her head, as normal. (00:07:40)
Continuity mistake: In Sarah's fathers bedroom, the green chair that sits by the back doors changes position during the scenes, and the cushion and soft toy that sit on it often change their position as well. (00:08:05)
Continuity mistake: When Sarah holds Toby and says, "Knock it off, come on. Stop it. Stop it," her ring is on her middle finger. However in the wide shot, still holding Toby, she says, "I can bear it no longer..." her ring is now on her ring finger. (00:08:30)
Continuity mistake: When the Goblins are spooking Sarah in the dark bedroom, she spins round as a few pop out at the same time (near the vanity table, from the dresser drawer...), and one lifts the lid of a brown case atop the tall dresser. However, in the previous shots of the well lit room and when she first entered the dark bedroom, that case was gone - replaced with flowers. (00:08:35 - 00:11:35)
Continuity mistake: Near Toby's crib there is table with a tea/coffee set with cups and other items on it. These things change their positions on the table in different shots. When Sarah holds Toby up high and asks the Goblins to take him away, when Sarah walks into the bedroom and says, "Toby, are you alright?" then when Sarah gasps at seeing the owl. (00:08:55)
Answer: The necklace is a symbol of Jareth's power throughout the story. All the time that Sarah is in the Labyrinth, Jareth has more power than her, because she doesn't really know what she's doing, and isn't taking one particular path, just getting lucky at the right times. At the end, as we all know, Sarah triumphs, and Jareth's necklace changes to admit his defeat.