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GEM IDENTIFICATION & RESEARCH
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JGRL / GEM PORTRAITSchematic color and shape illustrations

CITRINE

Citrine

Quartz

Yellow to orange quartz. It is a different mineral from topaz, even when their colors look similar.

Mohs hardness 7
Crystal & structure Trigonal
Quartz gemstones

GEM PROFILE

Basic properties

Mineral or material
Quartz
Main chemical composition
SiO₂
Crystal & structure
Trigonal

Shares the quartz structure with amethyst. Different colors can occur within the same mineral species.

Typical colors
Yellow, orange and reddish orange
Mohs hardness
7

A measure of scratch resistance, distinct from resistance to impact or breakage.

About hardness and durability
Representative sources
  • Brazil
  • Bolivia
  • Spain

Examples of known sources. Determining the origin of an individual stone requires examination and comparison with reference material.

Common cutting styles
Rounds, ovals, pears, step cuts and other styles.
Explore cutting styles

LOOK A LITTLE CLOSER

What to observe

Color strength alone cannot establish identity or whether a color is naturally occurring. Quartz combining amethyst and citrine colors in one crystal is called ametrine.

TREATMENT & CARE

Treatments & care

Treatments & identification

Much commercially available citrine is produced by heating amethyst to alter its color.

Everyday care

Wash with lukewarm water and mild detergent, avoiding high heat and sudden temperature changes. Handle fractured stones especially gently.

Cleaning depends on treatment, inclusions and mounting. If a stone's condition is unknown, ask your jeweler or a gem specialist before cleaning.

READING & REFERENCES

References

Public sources for learning about this gemstone's general properties.

This dictionary provides general educational information. Values are representative and do not identify or grade an individual stone. Locality examples include historical deposits.
Sources checked: October 19, 2026