Yellow Sapphire
Corundum
What is Yellow Sapphire?
Yellow Sapphire is a gemstone variety of corundum, prized for its vibrant yellow color. The color is primarily due to the presence of trace amounts of iron. It forms in various geological environments, including metamorphic rocks and alluvial deposits. The best quality stones are transparent with excellent clarity and brilliance. Yellow Sapphires are often faceted to maximize their sparkle and are used in jewelry for their beauty and durability.
Optical Properties
- Refractive Index
- 1.762-1.770
- Birefringence
- 0.008
- Pleochroism
- Weak
Discover Values
This stone excels in beauty.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Yellow Sapphire before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Yellow Sapphire Localities Map
See where Yellow Sapphire is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Yellow, ranging from pale to intense golden hues
- Hardness (Mohs)
- 9
- Density
- 3.99-4.00 g/cm³
- Luster
- Vitreous
- Crystal System
- Trigonal
Chemical Properties
- Chemical Formula
- Al2O3
- Elements
- Al, O, Ti, Fe, Cr, V, Ga
Also Known As
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Yellow Sapphire FAQs
How do I identify Yellow Sapphire?
Yellow Sapphire can be identified by its hardness of 9 on the Mohs scale, Yellow color, Vitreous luster, Trigonal crystal system. Look for these key characteristics when examining specimens.
What color is Yellow Sapphire?
Yellow Sapphire typically appears in Yellow, ranging from pale to intense golden hues. Color can vary depending on impurities and formation conditions.
How hard is Yellow Sapphire?
Yellow Sapphire has a hardness of 9 on the Mohs scale. This makes it a relatively hard mineral suitable for jewelry.