Tag Archives: diamond color

05 Jun

Yellow Diamonds – Colored Diamonds

Yellow Diamonds

Enter into the exciting and highly exclusive world of fancy colored diamonds, where the traditional notions of diamonds being colorless shatters that concept.  The first color diamond Schwanke-Kasten Jewelers will explore with you, is the yellow diamond; also known as the canary diamond.

Yellow Diamonds – A Canary Delight!

In the Superman comics, the hero crushes a lump of coal (carbon-based material) so hard that it produces enough heat and pressure to form a diamond for Lois Lane. While coal, under immense heat and pressure does not create diamonds, although they possess similar atomic makeups. However, when nitrogen enters the rigid structure of the composition of diamonds, they absorb blue light and give off a yellow shade in the visible light spectrum. The amount of nitrogen present in a yellow diamond will affect how light or dark the color is. Moreover, this logic of wanting more nitrogen, an impurity, naturally present in a yellow diamond is the opposite of a flawless white diamond. Additionally, gemologist give recognition to fancy color yellow diamonds a secondary hue such as orange or brown.

Yellow Diamond Engagement Ring from Schwanke-Kasten Jewelers
Yellow Diamond Engagement Ring from Schwanke-Kasten Jewelers

The GIA grades yellow diamonds slightly different than traditional white diamonds. Diamonds Pro sums it up nicely, “if the white diamond color scale [D – Z], were to continue past Z – all the way to a rich, yellow color – you’d have a Fancy Vivid Yellow Diamond”. Essentially this means that the best quality yellow diamond will be fully saturated with yellow and have no traces of whiteness.

Colored Diamond Scale:

Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid/ Deep/Dark

Gemologists estimate that one out of about every 10,000 carats of diamonds are a natural colored diamond. Furthermore, 60% of those natural colored diamonds are yellow. So, while they are common among natural colored diamonds, they are still exceptionally rare among the grand scheme of things.

Yellow Diamonds - Schwanke-Kasten Jewelers Engagement Ring in 18k white gold with diamond halo

At Schwanke-Kasten Jewelers, we are fortunate enough to have a gorgeous example of one set in a beautiful engagement ring. This 1.39 cushion cut, fancy yellow diamond is set with 0.56 carats of round diamonds on the halo and down the shanks in 18kt white gold! We would love to see you propose with this stunning diamond engagement ring! Additionally, stop by Schwanke-Kasten Jewelers to peruse our exceptional collection of diamond engagement rings in Milwaukee and Whitefish Bay.

09 Aug

Colored Diamonds – Natural Blue

Hope Diamond - National Jeweler

It is a well-known fact that diamonds are among the rarest gemstones on Earth, naturally colored diamonds are even more so. So much so, that gemologists and geologists are still learning about how diamonds obtain color. The Gemological Institute of America (GIA) just published a report on blue diamonds. The study, conducted by GIA, took place over two-years using 46 blue diamonds submitted to the GIA.

Colored Diamonds – Blue Diamonds, A GIA Study

Evan Smith, a Lead Researcher at GIA, estimates that 0.02% of mined diamonds containing the trace element boron. Scientists largely conclude boron is responsible for natural blue diamonds color. This explains why in recent auctions, blue diamonds are fetching record prices. Moreover, finding these diamonds with natural, solid inclusions is even harder.

The Process

Gemologists concluded in this article that blue diamonds form an estimated 4 times deeper in the Earth’s mantle (most form between 93 – 124 miles below in continental plates brought up by Kimberlite eruptions). Researchers hypothesize diamonds fuse with boron in the sublithospheric mantle (superdeep) from oceanic rock. Furthermore, they state oceanic rocks are subducted 410 miles or deeper over a billion years by plate techtonics!

Blue Colored Diamonds Formation

In addition, geologists make inferences from inclusions in these diamonds. This information tells gemologist about the surrounding minerals and known locations of said minerals.

08 Feb

New Engagement Rings Website

Naledi Bridal Collection at Schwanke-Kasten Jewelers in Milwaukee

With Valentine’s Day, the second most popular day for proposals, coming up. We redesigned our Schwanke-Kasten Jewelers engagement rings website to be more intuitive.

We created an easy-to-use web page to help you understand how to select the perfect diamond engagement ring.

Start at the diamond education page, “All About Diamonds”, where briefly highlight several questions you should ask yourself before shopping. Then dive into the 4 C’s of diamond quality. The actual diamond is the bulk of your cost; therefore, it’s very important to fully understand what you are looking for when selecting a diamond.

engagement rings - schwanke-kasten jewelers

Once you have an idea of what kind of diamond you want, we recommend checking out our “Engagement Ring Mounting Ideas” page to see the different ways your beautiful diamond can be mounted into a ring setting.  While the rings showcased here represent some of our more popular styles, we encourage you to stop in at our Whitefish Bay location to see our complete engagement collection.  With an on-site GIA certified gemologist and a goldsmith we can easily make your dream ring a reality.

Have the ring? Here are some ideas on where to propose in Milwaukee.

15 Nov

Buying An Engagement Ring

Naledi Engagement Rings at Schwanke-Kasten Jewelers

Buying an engagement ring can seem like a scary experience. It doesn’t have to be! Before you go buying an engagement ring, the experts at Schwanke-Kasten Jewelers recommend considering the following:

Buying an Engagement Ring – Budget

Budget: The golden rule has always been two month’s salary. However, we believe that you should set aside a budget that won’t leave you dead broke. We recommend setting an honest budget with the forethought that engagement rings are expensive.

Learn the 4C’s:

  • Carat Weight – This is the size of the diamond (or another precious gemstone). If your finance wants a big stone but your budget is limited, ask for a stone with a large table. While this will affect the brilliance and fire of the stone, it will make it appear larger. If you want a beautiful stone and size isn’t the issue but the budget is. Select stone just under the nearest whole carat (i.e. 1.85 carats vs. 2 carats). There tends to be a jump in price once a diamond’s size hits the nearest whole integer.
  • Color – Ranging from D – Z, D being colorless and Z being a light-yellow hue. The more colorless the diamond, the more expensive. From the visible eye, it is tough to tell the difference between colorless and near-colorless.
  • Cut – If she is more reserved or traditional, you may want to opt for a round, brilliant cut diamond. However, for a unique look, there are a whole array of fancy cuts like Ascher, emerald, marquise, pear- and even heart-shape are used for creating engagement rings. Do keep in mind, fancy cut diamonds typically are limited in the types of mountings.
  • Clarity – To the naked eye, the clarity of the diamond is often impossible to judge – sometimes even to a trained professional! We recommend, while important, that this be the last of the 4C’s to consider.

Mounting

Mounting: There are numerous types of diamond mountings that can showcase the center stone, however it is important to consider the following:

  • Will you be purchasing a matching wedding band in the future? Some mountings and diamonds are made in a way that a matching wedding band is not feasible. There are practical solutions to this, however.
  • Consider her line of work, sometimes a high mounting isn’t possible. This is especially important if she works in the medical field or works with her hands frequently.
  • If she has skin allergies, a certain skin tone or wears a particular color of jewelry, you may need to consider a specific type of precious metal.
Ring Size

Ring Size: If you can, swipe a ring that she often wears on her ring finger, then we can help you select a size for the ring. Jewelers can size up or down most engagement ring mountings one size. Another option is to simply present a ring, and then come and choose a slightly larger ring size as it is easier to solder a ring down.

  • Ask your married friends, her friends, AND your parents for help and input. There is nothing wrong with being nervous or unsure as it can seem like an overwhelming experience.

We recommend checking out our diamond vocabulary list, to familiarize yourself with various diamond terms. Visit one of our Schwanke-Kasten Jewelers stores to work with our highly trained staff, including GIA certified gemologists, to discover buying an engagement ring with easy!buying an engagement ring

19 Jun

Diamond Color – Four C’s

G.I.A Diamond Color Scale - Schwanke-Kasten Jewlers - Four C's

Generally, when we think of diamonds we do not associate color to them. However, one of the four major “C’s” is diamond color or lack thereof. According to GIA, the foremost authority on diamond grading which Schwanke-Kasten Jewelers uses for their engagement rings, “a chemically pure and structurally perfect diamond has no hue, like a drop of clear water, and consequently, a higher value” (GIA).

Diamond Color

So EXACTLY how does a diamond not have color and how can a diamond inherit color? The most common occurrence with clear diamonds is the varying degrees of yellow/brown hues. This is graded on the universally accepted GIA scale from D – Z under very controlled lighting and viewing conditions. In fact, some of the color distinctions are “so subtle that they are invisible to the untrained eye; however, these distinctions make a very big difference in diamond quality and price” (GIA).

Colored Diamonds

However, jewelry auction house will place a premium on diamond color because they know they add value, just look at these incredibly expensive diamonds that have been sold lately! And while color can take away from the value of a normal clear diamond, it can also add tremendous value when the color is outside of the normal range of D – Z (delete color) grading. These colors can exist in the shades and hues of: red, blue, green, pink, yellow and even white and grey diamonds. As we mentioned before, these tend to occur because of one of two conditions.

  • Scientists know that chemical imperfections found in the diamond can cause color. Chemist believe high levels of hydrogen cause grey diamonds. They also know that a presence of boron can create blue diamonds, which are some of the rarest and often the most expensive.
  • Structural imperfections to the normal diamond lattice arrangement of carbon atoms can also lead to inclusions of color. Scientists believe green diamonds get their color from “radiation displacing carbon atoms from their normal positions in the crystal structure” (GIA).

In some cases, scientists are not even sure what causes the hue of a diamond. Pink diamonds are so rare that scientists can’t make a conclusion on the hue’s causation. However, it will likely be a matter of time before they discover a similarity among them.

Interestingly enough, GIA uses a separate scale to grade colored diamonds. The scale takes into consideration 27 hue varieties and saturation hue of 9 descriptors ranging from faint to fancy vivid.

Read more on Schwanke-Kasten Jewelers regarding the 4Cs and how to pick the perfect diamond for an engagement ring.

08 Feb

4 C’s of Engagement Rings: Color

With the second article of the 4 C’s series, Schwanke Kasten would like you to explore a diamond’s color. Diamond color refers to the presence of any color at all. A perfect diamond is completely colorless, allowing the most amount of light to pass through creating a wonderful effect. Along with being completely colorless, diamonds can also have a slight cloudy appearance or can contain some yellow color. The more color a diamond has the lower its quality and the less valuable the diamond is.

4 C's - Color | Schwanke-Kasten Jewelers

An alphabetical scale was developed by the Gemological Institute of America (G.I.A.) to represent a diamond’s color. The scale ranges from D – Z. (According to the G.I.A., the scale starts at D in order to differentiate itself from other scales at the time, all of which started with A)

D-F: Colorless

G-J: Near Colorless

K-M: Faint Yellow

N-R: Very Light Yellow

S-Z: Light Yellow

Obviously, it is ideal to purchase a diamond rated D-F. However, even though a diamond rated G-J might contain a minuscule amount of color, it is almost always invisible to the untrained eye, so it is perfect for someone whose budget doesn’t allow for them to purchase the highest rated diamonds.

Schwanke-Kasten Jewelers has a great selection of diamond engagement rings.  Visit our diamonds on the Schwanke-Kasten website.