Chert has ivory hair with a short ponytail, she wears a grayish dark brown cloak on her shoulders, a shaded brown shirt with beige details, brown pants, and dark beige boots. Her gem is on the nose and her skin is warm dull orange, with her eyes being brown. Her facial profile is softer than that of other Quartzes, with rounded cheeks and thinner lips, and is slightly shorter than normal, making it quite possible that she's defective.
Little is known about her personality. She seemed happy and overjoyed when Flint was healed.
At some point before the events of the series Chert was deemed defective for having a moral detachment to fighting and was shattered. Her shards were then used in Yellow Diamond's early forced fusion experiments.
Chert (after having her gemstone fixed offscreen) watched Yellow Diamond reassemble Flint's gemstone, by placing the shards, piece by piece. When she reformed, her limbs were stretched out, due to her gemstone missing a few pieces. Luckily, Yellow used her powers to fix Flint's limbs and return them to their normal size. Chert then welcomes her back and happily hugs her friend.
While Steven is driving away, she and Flint are seen posing, while Pink Pearl takes their picture.
|1. "Little Homeschool":||Absent||11. "In Dreams":||Absent|
|2. "Guidance":||Absent||12. "Bismuth Casual":||Absent|
|3. "Rose Buds":||Absent||13. "Together Forever":||Absent|
|4. "Volleyball":||Absent||14. "Growing Pains":||Absent|
|5. "Bluebird":||Absent||15. "Mr. Universe":||Absent|
|6. "A Very Special Episode":||Absent||16. "Fragments":||Absent|
|7. "Snow Day":||Absent||17. "Homeworld Bound":||Debut|
|8. "Why So Blue?":||Absent||18. "Everything's Fine":||Absent|
|9. "Little Graduation":||Absent||19. "I Am My Monster":||Absent|
|10. "Prickly Pair":||Absent||20. "The Future":||Cameo|
- Chert and her friend, Flint, were supposed to be Off Colors, according to the writers Matt Burnett and Ben Levin.
- Chert is the second revived Gem shown in the series thus far. The first was Jasper.
- She and Flint are the only Quartzes to not have defined lips.
| Chert's gemstone is located on her nose with a hexagonal facet. Its overall shape is circular.
There is a small crack on the right side of the gemstone due to Yellow Diamond not being able to find all her pieces.