Emerald Stone: Prices, Quality Comparisons, Origins, Treatments & More!

Today we have Benedicte (FGA gemologist) with us to go over all the things you need to know before buying an emerald! We will cover emerald qualities (color, clarity, cut and carat) and show clear comparisons so you can see the differences of higher and lower stone grades. The different origins, common treatments including oiling.
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What is an Emerald?
Emeralds are part of the barrel family, which is a large family of stones that vary in colors. The most well-known stone within the family would be Emerald! It is a precious stone along with diamonds, rubies, and sapphires.

In the Barrel family you’ll find aquamarine, morganite, heliodor, and green barrel. They all have the same chemical composition, colored by trace elements. Meaning, the chemicals that color them are not part of their chemical composition, they just happened to be there when the crystal was forming. For example, Emeralds are colored by Vanadium whereas aquamarine is colored by iron.

Qualities of an Emerald
Color: The very desirable and saturated emerald color makes a huge difference in the value of an emerald. For example, a 0.55 ct deep light emerald goes for less than half the price of a 0.55 ct deep green emerald. However, if a stone becomes too dark, it loses value.

Clarity: Emeralds are more included than any stones in the Barrel family. They are known to be more included than many other gemstones. A clean emeralds really hikes up the value of a stone. For example, a clean 0.71 ct emerald goes for $1100 whereas a more included one goes for $500.

Emeralds are pretty durable in the sense that they won’t scratch, however, they may crack. They have a hardness of 7.5, so they are not a bad choice for engagement rings, however, if you have a more active lifestyle or you’re clumsy, it may not be the right choice for you.

Size: For some stones, the weight per carat will usually stay in the same price range. Meaning, the stone’s price is affected by the fixed price of its carats. However, with emeralds, as the carat weight rises, the price per carat also rises. For example, a 1ct emerald could go for $1000 per carat, where as a 2ct emerald could go for $5000 per carat. This happens because Emeralds in larger sizes are difficult to find.

Cut: We recommend setting your stone in a style that will protect it as much as possible. The safest option would be bezel setting.

Treatments
Although heat treatment is common with sapphires, Emeralds are not heated as they are too sensitive for such an abrasive treatment. However, a common treatment with emeralds is oiling. It is the fracture filling of a stone with oil.

Emeralds are vacuum sealed with cedarwood oil. Any oil can be used, however, cedarwood oil is most commonly used as it has a very similar refractive index as Emeralds, meaning all the fractures become invisible. An oiled Emerald will likely never have to be re-oiled.

There are levels of oil treatment: No oil, minor oil, and heavy oil. The level of treatment does affect the price. A good quality stone will usually have minor to moderate oiling. That is totally normal and accepted in the industry. Despite that, any treatment on stones should always be disclosed.
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Fine and Flux Jewelry is a jewelry brand that specializes in custom design and engagement rings. We create all our jewelry in-house, in a homely studio downtown Montreal, Canada, free shipping worldwide!
We create all our jewelry videos to entertain and educate you so you have a better understanding on how it's made, how to make an educated purchase, and also what to look out for.
Do not try anything you see in these videos at home.
For more information or to book an online appointment please write to us at [email protected] and we will be happy to get back to you quickly.
00:00 Introduction
00:30 What is an emerald stone? Beryl family
04:20 Emerald qualities & prices
14:09 Emerald origins & prestige
17:45 Treatments & oiling
23:26 Synthetic & imitation emeralds
28:11 Eye CANDY!