Tuesday 30 April 2019

Diamonds are Geologist's Best Friend

Diamonds are Geologist's Best Friend

[Carnegie Institution for Science] New research by the GIA, the University of Alberta, the NSF, and the Carnegie institution, led by Karen V. Smit, Steven B. Shirey, Erik H. Hauri and  Richard A. Stern reveals that mineral inclusions in rare diamonds have provided clues to when their continents of origin were formed. "Diamonds may be beloved by jewelry collectors, but they are truly a geologist's best friend. Because they originate deep inside the Earth, tiny mineral grains trapped inside of a diamond, often considered undesirable in the gem trade, can reveal details about the conditions under which it formed.In this way, diamonds act as mineralogical emissaries from the Earth's depths," explaines Carnegie co-author Steve Shirey. The research shows that sulfide inclusions in diamonds are a powerful tool to investigate continent construction processes. “We’ve found a way to use traces of sulfur from ancient volcanoes that made its way into the mantle and eventually into diamonds to provide evidence for one particular process of continent building,” explained Karen Smit of the GIA. The longevity of Earth’s continents in the face of destructive tectonic activity is an essential geologic backdrop for the emergence of life on our planet and their work has demonstrated that diamonds can be used to reveal how a buoyant section of mantle beneath some of the continents became thick enough to provide long-term stability.

 Diamond Impurities . Credit Carnegie Science

Pictures: Image of diamonds from Sierra Leone with sulfur-containing mineral inclusions courtesy of the Gemological Institute of America.  Image of white diamond with inclusions courtesy of Carnegie Institution for Science
For more information please read further: https://carnegiescience.edu

 

 

Step into the mesmerizing world of natural Pink diamonds, synonymous of elegance and sophistication. These exquisite gems have stolen the spotlight in the realm of fine jewelry, captivating the hearts of fashion enthusiasts around the globe. 

In this article, we’ll explore the enchanting features of Fancy Pink diamonds, uncovering their origins, possible tones, and the growing fascination around them. As we delve into their unique characteristics, you’ll learn how they compare to other popular pink gemstones, revealing the distinct advantages that set them apart.

The Origin Of Their Mesmerising Hues

Fancy Purple-Pink diamond from Langerman Diamonds.
0.11 ct Radiant Pink VS diamond.

Fancy Pink diamonds are the result of a remarkable geological process that lasted millions of years. During their formation process, atomic traces of minerals such as hydrogen, nitrogen, or boron were introduced into their crystalline structure, resulting in impressive hues.

However, another scientific theory states that the pink hue comes from a deformation in the crystal lattice of the stone, a phenomenon caused by extreme pressure.

Whichever the cause, thanks to our Earth’s natural transformations, today we get to enjoy the exceptional shades of Pink diamonds.

Fancy Intense Purple-Pink diamond from Langerman Diamonds.
0.22 ct Pear Pink diamond from Argyle, Australia.

From delicate pastel tones reminiscent of blooming cherry blossoms to intense, vivid shades that command attention, natural Pink diamonds offer a diverse palette of hues that ignite the imagination.

Rarity And A Growing Fascination

The allure of these unique stones lies not only in their enchanting beauty but also in their rarity. 

Fancy Intense Brownish Pink diamond from Langerman Diamonds.
0.13 ct Marquise Rosé VS2 diamond from Argyle, Australia.

As luxury enthusiasts and jewelry connoisseurs seek to come in possession of the most exclusive and coveted pieces, the interest surrounding fancy pink diamonds continues to grow. With the recent closure of the renowned Argyle mine in Australia, a significant source of Pink diamonds, their scarcity has skyrocketed.

Pink Diamond’s Unparalleled Properties

Fancy Intense Brownish Pink from Langerman Diamonds.
0.32 ct Oval Pink diamond from Argyle, Australia.

Brilliance

The refractive index of a diamond is approximately 2.42. This high refractive index is one of the factors that contribute to the exceptional brilliance and sparkle that diamonds are renowned for. The high refractive index allows diamonds to bend and reflect light in a way that creates maximum dispersion and brilliance, resulting in their captivating play of light and fire. It is this unique optical property that sets diamonds apart from other gemstones and contributes to their timeless allure and desirability.

0.35 carat Trapezoid Step-Cut Raspberry diamond with GIA report.

Hardness

Diamonds are renowned for their exceptional hardness, ranking 10 on the Mohs scale, which is the highest possible rating. This remarkable property makes diamonds highly resistant to scratching and abrasion, ensuring their longevity and durability even with daily wear.

Split-shank Pink diamond engagement ring with double halo by Langerman Diamonds.
Pear-shaped Pink diamond ring with double halo.

The hardness of a diamond contributes significantly to its value. Diamonds are prized for their ability to withstand the rigors of everyday use without losing their beauty or succumbing to damage. This durability ensures that diamond jewelry, such as engagement rings and heavily worn pieces, can be cherished forever and passed down through generations.

What About Other Pink Gemstones?

Tourmaline

This pink gemstone is often used in jewelry for its vibrant color. Pink tourmaline can be found in various parts of the world, including Brazil, Afghanistan, Mozambique, and the United States. Each location may produce unique variations in color and quality, making it more complicated for the regular customer to understand how to measure and compare characteristics.

Tourmaline ranks 7 to 7.5 on the Mohs' scale of hardness, making it moderately durable, but relatively softer compared to Pink diamonds. With a refractive index between 1.624 and 1.644, pink tourmaline exhibits a good amount of brilliance and light dispersion.

Pink quartz

This mineral showcases a soft, delicate pink hue that does not typically offer much sparkle. There are multiple levels of transparency available, from very translucent to milky opaque or smoky with yellow or brown undertones.

Scoring a 7 on the Mohs scale, pink quartz is relatively durable and suitable for some types of jewelry. However, it is still important to protect it from impact, and best suitable for earrings and low-wear pieces.

Pink Sapphire

The intensity of its color depends on the place of origin and the combination of trace elements present within its crystal structure.

With a hardness of 9 on the Mohs scale, pink sapphires are very durable and resistant, making them suitable for all kinds of jewelry pieces. However, they are more prone to scratches than diamonds.

Kunzite

Kunzite is quite affordable because it’s relatively unknown although it can be found in many places like Afghanistan, Brazil, Madagascar, and the USA.

Like most color stones, kunzite can be undergo irradiation or heat treatments to enhance its color. Exposure to heat and bright light can cause color in both natural and treated kunzite to fade over time.

Morganite

Most morganite deposits are found in Brazil, but the highest quality specimens come from Madagascar. Typically, morganite enjoys a high transparency with minimal inclusions resulting in clear, polished stones.

Scoring a 7.5 to 8 on the Mohs scale, Morganite is safe and durable enough for jewelry.

Your Best Choice: Pink Diamonds

Fancy Intense Orangy Pink diamond from Langerman Diamonds.
0.29 ct Shield cut Pink diamond from Argyle, Australia

There are multiple options to choose from to create a jewel with pink gemstones. However, they all fall short when compared to the durability and brilliance of natural Pink diamonds. With sources becoming more scarce while demand continues grows, Pink diamonds keep appreciating in value making them a better financial choice when compared to other gemstones which tend to loose value in the resale marker. Pink diamonds present multiple advantages for their investment potential and as a valuable asset to be passed on for generations.

Bespoke Pink diamond ring by Langerman Diamonds.
Emerald cut Burgundy diamond set in a ring with channel-set and pavé-set white diamonds.

When purchasing color gemstones, it’s important the buyer requests a professional laboratory report that discloses any enhancements to make an informed decision. Unfortunately for most consumers, it’s hard to find full-detailed information on a finished jewelry piece and it requires additional effort and inquiries to confirm the quality of a gemstone.

Langerman Diamonds has over 50 years of expertise in sourcing and trading natural color diamonds. Explore our online inventory and contact us to learn more about the purchasing process.