Yellow Sapphire (pukraj) Stone in Pakistan

Yellow Sapphire is a natural gemstone belonging to the corundum mineral family. Its attractive yellow color is primarily caused by trace amounts of iron within the crystal structure. Yellow sapphires are valued for their brilliance, durability, and vibrant color. With a Mohs hardness of 9, they are among the hardest natural gemstones, making them an excellent choice for everyday jewelry.

Color

Yellow sapphires occur in a wide range of natural shades, including:

Pale Yellow
Light Yellow
Lemon Yellow
Golden Yellow
Canary Yellow
Honey Yellow
Bright Yellow
Deep Golden Yellow

The most valuable stones display a vivid, saturated yellow color with excellent transparency and even color distribution.

Description

Yellow sapphires are renowned for their exceptional brilliance, high durability, and resistance to scratching. They generally exhibit excellent transparency and can be found with very good clarity. Many natural yellow sapphires undergo heat treatment to enhance their color and clarity, while untreated stones with fine color are rarer and often command higher prices.

Physical Properties
Mineral Family: Corundum
Chemical Composition: Aluminum Oxide (Al₂O₃)
Color: Pale yellow to deep golden yellow
Hardness: 9 on the Mohs scale
Luster: Vitreous (glass-like)
Transparency: Transparent to translucent
Specific Gravity: Approximately 3.95–4.03
Refractive Index: 1.76–1.77
Availability (1 Carat and Above)

Yellow sapphires are available in a wide range of sizes:

1–2 ct: Readily available
2–5 ct: Common in commercial and fine qualities
5–10 ct: Available, with fine-quality stones being less common
10 ct and above: Available but increasingly rare, especially with vivid color and excellent clarity
Quality Factors

The value of a yellow sapphire depends on:

Rich, vivid yellow color
High transparency
Good clarity with minimal visible inclusions
Excellent cut and symmetry
Larger carat weight
Whether the stone is untreated or heat-treated
Uses

Yellow sapphires are widely used in:

Rings
Pendants
Earrings
Bracelets
Fine and luxury jewelry
Gemstone collections
Major Sources

Natural yellow sapphires are mined in:

Sri Lanka
Madagascar
Thailand
Australia
Tanzania
Nigeria

Yellow sapphires are admired for their bright, cheerful color, exceptional durability, and timeless elegance. Their availability in sizes from 1 carat upward makes them suitable for fine jewelry, gemstone collections, and investment-grade pieces, particularly when they possess vivid natural color and high clarity.