The price of some Sapphires ranges from $25 per carat to over $11,000 per carat. It is very rare to find blue sapphires with extremely high clarity, making them very valuable. The price goes up with rarity. The most highly prized sapphires come from Kashmir.

Citrine is among the more popularly known yellow gemstones. Called citrine after the French word citron for lemon, this stone is known for its beautiful yellow-brown hue. With a hardness ranking of 7 on the Mohs scale, citrine is relatively tough and can be worn daily with reasonable care.

Citrine. Citrine is another extremely popular yellow gemstone. It gets its name from the French word citron, which means lemon, and is known for its refreshingly light yellow-brown hue. Because of its striking colour, crystal healers have come to recognize citrine as a symbol of positivity, happiness and contentment.

yellow sapphire

THE TOP 10 MOST EXPENSIVE GEMSTONES IN THE WORLD:

• Sapphire: Blue Belle of Asia – $17.3 million.
• Yellow Diamond: Graff Vivid Yellow – $16.3 million.
• Red Diamond: Moussaieff – $7 million.
• Emerald: Rockefeller Emerald- $5.5 million.
• Spinel: The Hope Spinel- $1.4 million.
• Opal: Virgin Rainbow Opal- valued at $1 million.

The best color for a natural blue sapphire is an intense, velvety, deep royal blue. This color of sapphire would be considered AAA quality, the rarest and most valuable. The second best color is a medium rich blue, or AA quality. Any blue sapphires that have a slight gray undertone fit into the A category.

Sapphires are the crystalized form of the mineral corundum. These crystals are second in hardness only to diamonds, registering 9 on Mohs scale of hardness. What the hardness means is that sapphires can be scratched only by a diamond and, sometimes, other sapphires depending on variances in each crystals hardness.

Thus, a ruby can’t scratch a sapphire and vice versa. A diamond is much harder than corundum, even though they’re only one division apart on the scale….The Mohs Scale of Hardness.