Category Archives: Colored Diamonds

Guide to Black Diamond Rings – Costs, Styles, & Sizes

Posted on Oct 25,2014

Natural black diamonds are extremely rare and are only found in two places in the world, Brazil and the Central African Republic. As such, most black diamonds used for jewelry are heat-treated low-grade colorless diamonds.

The color of natural black diamonds is either black or dark grey and is caused by graphite inclusions in the stone. Black diamonds are the toughest natural diamonds and they are usually denser than colorless diamonds. Natural black diamonds are porous and are made up of millions of small crystals stuck together. Due to its composition, it is a lot more difficult to cut into different shapes compared to other diamonds.

Unlike colorless diamonds and other fancy color diamonds, black diamonds absorb light instead of reflecting it. Due to the unique appearance of the stone, more and more people are choosing to buy black diamond rings over traditional colorless diamond rings.

Costs of Black Diamond Rings

There is a lot of mystery surrounding the formation of black diamonds; some theories state that black diamonds or carbonados come from outer space as a result of a supernova whereas others believe that black diamonds were formed by meteoritic impact on the surface of the earth. The most common theory, however, is that black diamonds are formed in the earth’s interior under extreme high-pressure and heat.

Regardless of the actual formation of natural black diamonds, these theories have a hand in increasing the price of black diamonds in the market.  Due to large interest in the mysteries surrounding the black diamond, there has also been an increase in the demand for natural black diamonds in the market.

Lab-treated black diamonds (those that are heat-treated through irradiation to change the color to black) are generally cheaper than colorless diamonds because they are usually made from low-grade colorless diamonds. The prices of lab-treated black diamond rings typically start at $1400 if the quality of the stone is relatively decent.

Natural black diamonds, known as fancy black diamonds, are generally very expensive because they are extremely rare. Price is determined by the intensity of the color, the absence of white inclusions in the stone, and the stone shape. The price for the average fancy black diamond typically starts at $2000 to $2500 per carat. Due to the difficulty of the cutting process, larger black diamond rings are a lot more expensive than smaller stones. For instance, a 3-carat fancy black diamond can cost over $8000 whereas a 9-carat stone can cost over $27000 without the ring setting.

Natural black diamonds typically have dark brown edges when viewed under a fiber optic light whereas black diamonds treated through irradiation appear dark green under the same light. It’s a quick way to determine whether a black diamond is natural or treated.

Styles of Black Diamond Rings

Black diamond rings come in a wide-range of styles. The unique, dark color of the stone makes it suitable for experimenting with different settings.

For instance, a growing trend in the jewelry market is setting a black diamond (whether natural or irradiated) in a tungsten ring band. Since both are black, they complement each other quite nicely. For a bit of contrast, small white diamonds are added as accent stones or a white gold or platinum stone setting is used to create contrast against the tungsten band.

It’s also fairly common to set a round black diamond in a halo and pave setting with small white diamonds as accent stones. Since black goes better with white, the most common material used for black diamond rings are silver, white gold, and platinum.

Rose gold and yellow gold are also used but they are relatively rare because the color of the stone clashes with the color of the metal.

Style is, of course, subjective so it’s up to you to decide which metal is suitable for a black diamond ring. While there is certainly a lot of interesting black diamond rings in the market, custom rings are always an option if you can’t find one that suits your taste.

Sizes

Black diamond rings come in standard ring sizes. In the US and Canada, the standard ring sizes come in sizes 5 to 13. In the UK and in other countries, different sizing values are used so it’s best to measure your ring size in inches or centimeters so you can easily convert to its equivalent size in the country where you are purchasing the ring.

You can obtain the size of your ring finger either by using a standard ring size chart or by wrapping your ring finger in a piece of paper or string and manually measuring the length with a ruler.

If you are buying for someone else, it’s best to just discreetly borrow a ring from that person so you can use it for sizing when you buy the black diamond ring. Don’t worry if you don’t get the size right, as most jewelers offer resizing services for free if you purchase the ring from them.

Posted in  Colored Diamonds, Diamond Colors, Diamond Cuts, Valuing Diamonds |   Tagged 

 

Guide to Blue Diamond Rings – Costs, Styles, & Sizes

Posted on Oct 03,2014

While not as popular as colorless diamond rings, blue diamond rings also has its share of the jewelry market. They are suited especially for people who are looking for a unique alternative to colorless diamonds.

Unlike colorless diamonds that are valued for the absence of color on the stone, blue diamonds are valued based on the intensity of color. There is also a different grading system for fancy color diamonds like blue diamonds.

Instead of being graded for their fire and brilliance, they are graded for the amount of color they show. As such, they are graded from light (showing the least color) to vivid (showing the most color).

For fancy color diamonds like blue diamonds, color is top-priority for jewelers.

Cost of Blue Diamond Rings

Compared to other fancy color diamonds, blue diamonds are very rare. Blue diamonds in the fancy intense and fancy vivid range are the rarest and most expensive.

Since natural blue diamonds are rare, a lot of the blue diamonds sold in jewelry stores are color-treated white diamonds. This is why it is important to check the origin report of the diamond before making a purchase to find out whether it is natural or color-treated.

Color-treated blue diamonds are relatively inexpensive since they are usually low-grade colorless diamonds that are treated to change color. Color treated blue diamond rings can cost anywhere from a few hundred dollars to thousands of dollars, depending on the treatment method, carat weight, clarity, and ring setting.

Natural blue diamonds, however, can cost as much as $250,000 per carat depending on the color intensity. Blue diamonds from the fancy light color range can also cost as much as $100,000 per carat, depending on the clarity and overall carat weight of the stone.

While clarity is also a consideration in pricing, color is still top-priority. As such, intense blue diamonds with visible inclusions are still priced very high as long as the face-up color value is desirable.

Styles of Blue Diamond Rings

Like colorless diamonds, blue diamond rings come in a wide-range of styles. For blue diamond engagement rings, halo and pave settings are very popular. These rings feature one large blue diamond in the center surrounded by a halo of small colorless diamonds on a pave diamond band.

Solitaire diamond rings are also very popular and are typically set in a prong setting of white gold. White gold and platinum are the most popular metals used for blue diamond rings but some styles also feature a combination of both yellow and white gold. A popular style for mixed metals is setting the diamond on a yellow gold prong stone setting and a white gold ring band.

While most blue diamond rings are paired with colorless diamond side stones, some also choose to pair blue diamonds with other fancy color diamonds like pink, yellow, red, or black.

There are some very unique blue diamond rings available online, such as art deco-inspired rings and blue diamonds set on a black band made of tungsten carbide.

When it comes to blue diamond ring styles, the options are virtually unlimited. If you can’t find a style you want, you can always have a blue diamond ring custom-made by a jeweler to suit your exact preferences.

Sizes

Blue diamond rings can come in just about any ring size. If you’re shopping for yourself, then you can easily find a ring that fits you or have a ready-made ring resized for your finger.

However, if you are shopping for someone else, a good option would be to borrow a ring from the recipient and measure its size using a standard ring size chart.

In the US and Canada, ring sizes range from 5 to 13 and in the UK, ring sizes range from A to Z. Other countries may use different values for sizes so if you’re shopping abroad, it’s best to just convert the US ring size to its equivalent in the country you are buying the ring from.

You can always have the ring resized if you get the wrong size but for engagements, it’s always a plus if you get it right the first time.

Posted in  Colored Diamonds, Diamond Colors, Types of Diamonds |   Tagged 

 

Blue Diamond Necklaces – Jewelry for Women

Posted on Jun 23,2014

Blue diamonds are fancy colored diamonds that are prized especially for the presence of color in the stone. While majority of diamonds sold in the market are in the D to Z color range, there are a few rare exceptions that show color including blue, pink, yellow, green, and even brown. While there are other stones that exhibit a natural blue color like a blue topaz or a blue emerald, blue diamonds are highly prized because of their rarity and beauty. Unlike colorless diamonds, blue diamonds and other fancy colored diamonds are much more expensive the more intense the color they show. Whereas people are willing to pay a premium to get a flawless colorless diamond in the D to F range, people are willing to pay more for diamonds the deeper the color they show when it comes to blue diamonds and other fancy color diamonds.

Unlike colorless diamonds, fancy color diamonds like blue diamonds are graded not for their fire and brilliance but for their color. Since inclusions are easily masked by the intensity of color in a blue diamond, clarity is not as important in blue diamonds as they are in colorless diamonds.

Of all the other gems used for women’s jewelry, diamonds are perhaps the most popular and most treasured. Blue diamond necklaces are especially prized for the rarity of the stone on the necklace. While not as easy to find as colorless or near colorless diamond necklaces, a blue diamond necklace will, no doubt, stand out in any occasion.

Selling Blue Diamond Necklaces

Due to their rarity, buyers are always willing to pay a premium for an authentic blue diamond. As such, selling a blue diamond necklace will yield better price offers than selling a diamond in the D to Z range.

If you have a blue diamond necklace that you want to sell (whether natural or color treated), it’s important to look for the best possible venue where you can get the best price for your necklace. After all, blue diamonds are a rare commodity and should be valued. If you want to get the best price, you can either sell directly to an individual who is willing to pay your ideal price or to an online diamond buyer. It’s best to look for an online diamond buyer who has expertise in valuing fancy color diamonds so you can get a fair price for your jewelry. Online diamond buyers will always be able to offer more for your diamond jewelry than pawnshops or jewelers because they have lower overhead costs so you can get more for your item.

Buying Blue Diamond Necklaces

You should exhibit more caution when buying a fancy color diamond like a blue diamond to ensure that what you are buying is authentic especially since some sellers might attempt to sell you other blue gemstones and label them as a blue diamond. Knowing what to look for will help you make an informed decision and will help you get the most for your money. Below are some helpful tips when buying blue diamond necklaces and other blue diamond jewelry:

Color

As the most important attribute in fancy color diamonds, you should pay close attention to the presence of color in the stone. The GIA uses these descriptions to grade fancy color diamonds like blue diamonds: fancy light, fancy intense, and fancy vivid. Fancy light is at the lower end of the scale and fancy vivid is considered the highest.

The GIA uses hue, tone, and saturation to grade the color quality of the stone. For blue diamonds, highly saturated ones are considered more rare and more valuable. The deeper the blue color is on the stone, the more expensive. It is worth noting, however, that blue diamonds don’t come in as many saturations compared to other fancy color diamonds. Blue diamonds also show a bit of gray color and are not as saturated as sapphires. Blue diamonds owe their color to the presence of boron impurities in the stone.

Clarity

While clarity is still important in a blue diamond, as long as it does not affect the stone’s face-up value, it is still highly prized. Highly included diamonds that show a lot of color can still be very expensive as the presence of color is the factor that matters the most. Unless the inclusions affect the durability of the diamond, they don’t typically affect the price.

Carat Weight

Carat weight is also an important factor in fancy color diamonds. Aside from larger diamonds being more valuable for their size, blue diamonds generally show more color the larger they are. Large blue diamonds are also very rare which is why they are highly prized.

Cut

Fancy color diamonds are typically cut into fancy shapes like radiant, pear, and oval because they show more color than round brilliant fancy color diamonds. The deeper the pavilion, the more intense the color in blue diamonds and other fancy color diamonds so this is also an important factor to consider.

Since blue diamond necklaces don’t have to be as perfect as blue diamonds used for engagement rings, you can compromise certain parameters to suit your budget especially when it comes to carat weight, color, and cut. However, if you want a truly rare blue diamond for your necklace, then be ready to pay a premium for your stone.

Grading Report

When buying a blue diamond, make sure it comes with a GIA Colored Diamond Grading Report and GIA Colored Diamond Identification and Origin Report to ensure its authenticity. The report will state the stone’s color origin (whether it is natural or treated).

Where to Buy

As previously mentioned, blue diamonds are extremely rare and as such few jewelers stock authentic blue diamonds that were not subjected to artificial coloring techniques. Authentic blue diamonds are also very expensive so others may prefer artificially colored colorless diamonds to authentic blue diamonds. Most blue diamonds available in the market are heat treated in gem labs to enhance the presence of color.

Amazon

Amazon offers a few blue diamond necklaces but most of them are color treated so if you’re truly intent on buying an authentic blue diamond, you might have trouble finding one on the site. If, however, a color treated diamond is a suitable option for you, then you might want to consider the following options:

PARIKHS Round Cut Blue Diamond Solitaire Pendant AAA Quality in White Gold (0.04 ctw)

Blue Diamond Necklace and Earring Set 1/2 Carat (ctw) in 14K White Gold

14K White Gold Blue Diamond Solitaire Pendant (1.50 CT) With 18″ Chain

Blue Diamond Solitaire Pendant 14K White Gold – 1.50 CT Diamond

1.53ct Fancy Blue Round Diamond Pendant Necklace 18k White Gold

Posted in  Buying a Diamond, Colored Diamonds |   Tagged