Jewelry Education 2018-02-03T20:26:52+00:00

Diamond Knowledge

The 4C’s of Diamonds


Of all the world’s gems, diamonds certainly possess the most radiant beauty. They are the most precious of all nature’s creations, and their fiery brilliance captures our hearts as the eternal symbol of love and commitment.

Selecting a diamond can be a great and rewarding experience when guided in an educated and personal way. We look forward to sharing our expertise and assisting you in your search for the diamond that’s right for you.

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Gemstone Knowledge

Find Your Birthstone

A gemstone is a naturally occurring mineral, desirable for its beauty and valued for its rarity. Durable enough to be enjoyed for generations, there are over 30 popular gemstone varieties. Some treasured for centuries and others recently discovered, they are all nature’s gifts to us.


Garnet is January’s Birthstone

While it is most known for its deep, rich red tones, fewer know that garnets also come in other shades, including vibrant oranges and greens. Whether set in a ring, a necklace, or a pair of earrings, garnets are a bold and elegant choice for a special wearer.


Amethyst is February’s Birthstone

Amethysts have many variations in color, so whether a light, lilac hue or a regal deep purple, it is possible to find a shade that suits any style or preference. Explore our options for amethyst jewelry and make for a very happy February birthday.


Aquamarine is March’s Birthstone

Its stunning pale blue color is versatile and unusual, and can be easily taken from daytime to evening. A smaller piece in aquamarine, with its very natural hue, can be perfect for more understated tastes, while a piece like a large cocktail ring or pendant has very high impact. Whatever you choose, rare aquamarine is sure to make any birthday a happy one!


Diamond is April’s Birthstone

With its light refracting capabilities and timeless beauty, diamonds are a sparkling reminder of the love and memories they represent. Fortunately, their hardness and durability ensure that they really are forever! We at David Douglas Diamonds & Jewelry are exceptionally proud of the quality of our diamonds

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Emerald is May’s Birthstone

Emeralds range in hue from a deep evergreen to a bright kelly green, and they are beautifully complemented by both white metals and yellow gold. A fabulous emerald ring or a pair of vibrant stud earrings would be the perfect gift for a May birthday–and would add some color to the life of its recipient for years to come!

Pearl or Alexandrite

Pearl is June’s Birthstone

These unique gems, when of fine quality, look like they have a glow from within. South Sea and Tahitian pearls, the largest and typically most expensive, are spectacular on a strand, or as a pendant or earrings. Smaller cultured and freshwater pearls also stand out with heir classic beauty an timeless elegance. Pearls are the perfect June gift that will satisfy even the most discerning tastes.

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Alexandrite is also June’s Birthstone

Known best for their color-changing capabilities, beautiful Alexandrite in top quality is very rare indeed.


Ruby is July’s Birthstone

Characterized by their stunning scarlet color and bold look, rubies can look both classic or completely modern, depending on the piece they are set in. Favor this romantic red stone for a July birthday–it will be a gorgeous addition to any jewelry collection.


Peridot is August’s Birthstone

Few other stones can match the strong green peridot in terms of uniqueness of color. Peridot looks warm and rich when set in yellow gold, but cool and avant garde next to the white metals. The yellowish green tones of the stone also look beautiful complemented by the other colored stones. Peridot is the perfect gift is the perfect gift for any August birthday!


Sapphire is September’s Birthstone

Typically found in a range of ravishing blues, sapphires also come in a spectrum of hues, like pink and yellow. Sapphires can fit just about any color preference, and the colors really pop in a ring, a bracelet, or a pendant. From faceted stones to teardrop shaped briolettes, sapphires are sure to add excitement to any September birthday!

Opal or Pink Tourmaline

Opal is October’s Birthstone

Opals come in many shades, from whitish to vibrant greens and blues, but they are share the beautiful multicolored shades that reflect under their surfaces. With the look of a gem but the depth of color and milky quality of a pearl, an opal is a very distinctive choice to wow a unique wearer.

Pink Tormaline is also October’s Birthstone

This gemstone is excellently suited for wearing and is uncomplicated to care for, since all Tourmalines show a hardness of 7 to 7.5 on the Mohs Scale.


Citrine is November’s Birthstone

Its warm tones bring to mind the falling leaves of autumn, ranging from crisp pale orange to light lemon yellow. Depending on the piece they are set in, Citrines can look either extremely subtle or incredibly unique! Add some warm beauty to a birthday with a gorgeous piece of Citrine jewelry.

Blue Zircon or Tanzanite

Blue Zircon is December’s Birthstone

Blue zircon is actually one of the few colored stones with “fire” (much like a diamond has). When well cut, you can see flashes of rainbow colors when you turn it in the light.

Tanzanite is also December’s Birthstone

While some desire the scintillant blue zircon, fancier tastes may prefer the deep cobalt purple-blue of rare tanzanites. Tanzanite is a very special and unique gemstone. World-wide it occurs only in one specific location; Tanzania, Africa. Make December full of warm memories with one of these blue stunners!

Pearl Knowledge

Types & Qualities


A pearl is a beautiful collaboration between nature and chance. When a particle, such as a grain of sand, is trapped in an oyster or mussle, it is coated with layers of smooth, rich nacre. Over time, this natural development creates the radiant gem we know as a peral.

In every 10,000 oysters, you might be lucky enough to find a single natural pearl. Because of this scarcity, virtually all pearls today are cultured–they are created by deliberately inserting an irritant into the oyster’s tissue. Because the quality of cultured pearls varies widely, the following information will aid you in making a wise purchase decision.

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Metal Knowledge

Platinum, Gold, Silver & Alternative Metals


Platinum is a white metal; but, unlike gold, it is used in a purer form for jewelry (approximately 95% pure platinum). Therefore, it does not need to be Rhodium plated like white gold does. Platinum is a very dense and heavy metal, so a platinum ring will feel heavier than a gold one. Platinum is extremely long wearing: however, it is significantly more expensive than gold. Platinum is an extremely popular choice for engagement rings. Platinum rings can be resized.

Platinum is considered more precious than gold. The price of platinum normally costs approximately twice the price of gold.


Gold is the most popular choice for wedding rings. It is available in different karats (or purities) and in different colors…

When buying gold jewelry, always look for the karat mark. All other things being equal, the higher the karat, the more expensive the piece. In the United States, 14-karat gold is the most common degree of fineness. Nothing less than 10-karats can legally be marked or sold as gold jewelry in the U.S.

Always look for the karat mark or “k” that appears on the back of the piece. By U.S. law, if a karat mark appears you should also see the manufacturer’s trademark to assure you that the karat marking is accurate.

Karat is the gold content of a metal. There are several karats available for gold.

Pure gold is too soft for use in jewelry and is typically hardened by alloying with silver, copper or other metals. It is more commonly sold in lower measurements of 18k and 14k. A lower “k” or “Karat” number indicates a higher percent of copper or silver mixed into the alloy with gold. Copper is more commonly used than silver to dilute the concentration of pure 24k gold.

Yellow gold typically contains a combination of gold and another metal.

White gold is an alloy of gold and at least one white metal. Its properties vary depending on the metals and proportions used. White gold is commonly alloyed with nickel, silver and zinc to enhance the metal’s strength and give it a white appearance. There are some nickel-free alloys available for people who may be allergic to nickel.

Because the natural color of white gold is actually a light grey color, it is typically rhodium plated to improve its appearance. Rhodium is a metal very similar to platinum and gives white gold a bright and reflective finish. Rhodium is very white and very hard, but id does wear away eventually  To keep a white gold ring looking its best, we recommend having it re-rhodium plated every 12 to 18 months.

White gold contains a combination of gold and a white metal.

Rose gold is a gold and copper alloy with a reddish color. It is also known as pink gold and red gold. Although the names are often used interchangeably, th difference between red, rose and pink gold is the copper content  the higher the copper content , the stronger the red coloration. A common alloy for rose gold is three-quarters gold and one-quarter copper.

Rose gold contains a combination of gold and copper.


Sterling Silver is a white-grey colored metal and is relatively affordable. Silver is a softer metal than platinum, gold, titanium and tungsten. It does not have the hardness that the other metals have and is usually alloyed with copper for strength. In the United States, anything called “silver” or “sterling silver” is 92.5% pure silver.

Silver is more prone to oxidation, which gives it a tarnished look over time. However, silver jewelry can easily be made to look like new again when cleaned by us, your jeweler.

Alternative Metals



With its silver-grayish color, titanium is very strong (much stronger than platinum, gold, and silver). Although Titanium is the hardest natural metal, it is also very lightweight. It is hypoallergenic, so anyone can safely wear it. Popularity for Titanium wedding bands is increasing; however, Titanium rings can not be resized.


Tungsten Carbide

Tungsten is a very hard and dense metal. While extremely strong and scratch-resistant, Tungsten carbide is a bit more brittle than traditional metals used in wedding bands. It is hypoallergenic and will not oxidize or irritate the skin. Popularity for Tungsten rings is increasing, but one thing to consider is, like with Titanium rings, Tungsten rings can not be resized.

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3605 Sandy Plains Rd #260
Marietta, Ga. 30066
Phone: (770) 578-0598

Tue – Friday : 10am – 6pm
Saturday : 10am – 4pm
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David Douglas Diamonds & Jewelry is intentional about Honoring and Blessing all who God brings our way.

We look forward to serving you in the near future.