Are bicolor sapphires rare?
Bi-colour sapphires are much more rare than single toned sapphires as they only occur within a perfect storm of geological conditions that can’t yet be replicated in a lab. That being said, bi-colour sapphires tend to occur anywhere natural sapphires are found, although in some locations more than others.
What is bicolor sapphire?
The bi-color sapphire is a stone that contains two colors as a result of color zoning. These gemstones can range from dramatic color zoning with two very different colors present in the stone, to slight color zoning which shows two very similar, but slightly off colors in one stone.
What color sapphires are the most expensive?
blue sapphires
In terms of color, pure blue sapphires are the most highly prized, and therefore tend to be the most expensive. This is one of the qualities of the Kashmir sapphire, said to be like “blue velvet” in their appearance.
What is a Parti sapphire?
Parti sapphires are otherwise known as bi-coloured or polychrome sapphires. These beautiful and rare gemstones have two or three variations of colour; with vibrant tones of blue, yellow and green. Its intricacy and complexity in colour, means it is entirely natural and impossible to replicate.
Do sapphires lose their color?
The only colors of sapphires that are known to have a fading color property are yellow and padparadscha sapphires. They exhibit this unique color fading and reviving characteristic as a feature of the stone’s natural design. These sapphires are similar to plants.
Are green sapphires rare?
Green is a rare color for a sapphire. Supplies may be limited, but green sapphire is virtually unknown to the public, so demand has not driven prices to the same heights as pink or yellow sapphires.
How do you lighten a sapphire?
1916: Low temperature (800–1200°C) heating to lighten blues Basalt-related Madagascar sapphires before (left) and after (right) heating to 950°C for ten hours in air. This process, which has been used since at least 1916, is commonly used today to lighten dark blue sapphires.
What color is the best sapphire?
blue
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.
What is the best color for a sapphire?
Heat treatments have become common in recent years, as a way of improving color as the beauty of a sapphire is judged by the richness and intensity of its color. The most desirable color sapphire is blue, and the most desirable shade of blue is referred to as “ cornflower blue .” It is neither light nor dark blue.
What are the different colors of Sapphire?
Pleochroism is different colors seen in different crystal directions. Less valuable blue sapphires might be grayish, too light, or too dark. The major fancy sapphire color categories are padparadscha, pink and purple, orange and yellow, green, and colorless and black.
What is a genuine sapphire?
Swarovski Genuine Sapphire , a prized gemstone with a special radiance symbolic of sincerity, love and faithfulness has been a premium ingredient in fine jewelry for more than twenty years. Swarovski craftsmen transform that intrinsic beauty into a precision-cut work of art that tells its own story through the brilliance of its color.
What color do sapphires come in naturally?
Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminum oxide ( α-Al2O3) with trace amounts of elements such as iron, titanium , chromium, copper, or magnesium. It is typically blue, but natural “fancy” sapphires also occur in yellow, purple, orange, and green colors;