Learn more About Jewelry

Before purchasing fine jewelry and diamonds let help you know more about it. We all know diamonds are precious stones and we all love to purchase them. This will help you get the best diamond with confidence. Diamonds are rated and sold according to the 4 cs ie. Carat, Color, Cut, and Clarity. Let’s know more about each aspect in detail.

4 Cs of diamond

Diamond Color

This refers to the absence of color in a diamond. A chemically pure and structurally perfect diamond has no hue and consequently a higher value. The colorlessness of a diamond is graded on an alphabetical scale from D (colorless) to Z (light yellow).


CUT is the most defining characteristic of a diamond. The cut of a diamond refers not to its shape, but to the balance of proportion, symmetry, and polish achieved by the diamond cutter. It is evaluated using the attributes of brilliance, fire, and scintillation. An expertly cut diamond will achieve high levels of brilliance, sparkle, and durability. Even if a diamond is graded well in other areas, a poor cut can result in a dull, muted effect. Diamond-Cut Scale contains 5 grades ranging from Excellent to Poor.

Diamond Clarity

Clarity refers to how clean or clear the diamond is with respect to natural microscopic characteristics that were trapped within or on the diamond while it was forming. Internal characteristics are known as inclusions, and characteristics on the surface of the gem are known as blemishes. Inclusions may be crystals of a foreign material or structural imperfections such as tiny cracks, known as feathers, which can appear whitish or cloudy.

Diamond Carat

The carat is the standard unit of measurement used to indicate the weight of diamonds and precious gemstones. Total carat weight (t.c.w.) is a phrase that represents the total weight of all diamonds or other gemstones in a piece of jewelry, when more than one gemstone is used. Diamond solitaire earrings, for example, are usually quoted in t.c.w., indicating the combined weight of the diamonds in both earrings.

Diamond Carat and Their Sizes in mm

Diamond Shape

Diamond shape refers to a diamond's physical form and is often one of the first attributes that people consider when shopping for a diamond.

Diamond Settings Pave and Micro-pave Setting

In this, small diamonds are closely set together with minimal visibility of the tiny metal beads or prongs, allowing more light to reflect for incredible brilliance. Stones smaller than 0.01ct, in a pave setting, are considered micro-pave set.

Prong setting

This classic setting features 2 or more prongs wrapped around the crown of the stone to secure it in place while also allowing maximum light to pass through the stone for maximum brilliance.

Shared Prong setting

In this, two or more stones are set together while each having 2 or more common prongs. This setting ensures maximum brilliance with the maximum passage of light.

Channel Setting

This involves setting diamonds in a channel or groove in the metal. The stones are set side by side in a straight line with no metal in between.

Invisible Setting

This setting is common for square or princess cut diamonds. Diamonds and gemstones sit side-by-side and create an illusion of a much larger diamond.

Bezel Setting

A bezel setting has a metal rim that encircles the sides of a gemstone and extends slightly above it. A bezel setting holds a gemstone securely, and the protective profile it creates makes a bezel setting a good choice for people with active lifestyles.

Precious metals

Fine Jewelry

Fine metal is a precious metal such as gold and silver. We sell gold and silver chains according to the gram weight mentioned on the listing. As these chains are manufactured in different factories to match the features they are sold according to the gram weight.


Because of its excellent malleability and alluring glow, it remains the most popular metal for jewelry. Pure gold is called "24 karat," which means that 24 out of 24 parts are gold. 24 karat gold is rarely used for jewelry because it is too soft and easily damaged. Alloys such as copper and nickel are added to harden and increase the durability of gold.

24k 24 / 24 100% gold

18k 18 / 24 75.0% gold

14k 14 / 24 58.5% gold

10k 10 / 24 41.7% gold

Yellow Gold

Yellow gold is available in different tones. The higher the percentage of pure gold, the richer the color will be. Solid/Hollow plain gold chains are sold according to gram weight. As these chains are manufactured in different factories to match the features they are sold according to the gram weight.

White Gold

White gold is actually yellow gold combined with a white metal such as palladium or nickel to give it a white hue. Even with white metals added, white gold still has a slight yellowish tint. To achieve a bright white appearance, white gold jewelry is often plated with rhodium.

Solid/Hollow plain gold chains are sold according to gram weight.

Gold Filled / Gold Bonded Jewelry

Bonded jewelry is manufactured with Sterling silver as the core metal and a sheet of pure Karat Gold mechanically affixed on top. The gold thickness, in bonded products, is greater than gold plated products and often permanent, making the product durable and long-lasting. Bonded items at Jewelry Unlimited come with a layer of 10k gold and are often stamped as 1/10 10k or 1/20 10k meaning 1 of 10 or 20 fractions of the jewelry is 10k gold.

Gold Finished Jewelry

Also referred to as gold plated jewelry, these pieces are created through a process where a base metal is covered with a very thin layer of gold by electroplating it. The quality of the base metal often determines the durability of gold plating. Majority of the gold-finished items at Jewelry Unlimited comprise of sterling silver as the base metal making them a far more durable and sturdy choice.

Jewelry Insurance

Insuring high-value personal property is a good idea, and your jewelry is no exception. Homeowner's and renter's insurance policies usually offer coverage for jewelry theft/damage. Carefully review your policy. Depending on the value of your collection, you might consider insurance specifically for your jewelry.

Jewelry/ Watch Appraisal Certificates

An appraisal certificate is an easily understood document prepared by an expert gemologist that describes the key characteristics and quality of the diamonds and metal used on the jewelry/watches. The appraisal certificate can also be used for to purchase insurance as well as for upgrades or resell. All diamond jewelry $500 and up, purchased from Diamond City Jewelry, comes with an appraisal certificate. Various designer watches include an appraisal certificate from a certified diamond laboratory. Please refer to individual listings for availability and nature of the certificate.

Caring for Jewelry

All jewelry pieces require regular cleaning to maintain shine and brilliance. You can clean the jewelry at home with a soft brush and a soapy solution. You can also use readymade cleaning solutions or take services of a professional jeweler. It is important that the jewelry is stored individually in soft cloths or plastic Ziploc bags to keep from getting scratched and that it is removed while doing heavy work, housework or gardening. It is essential to avoid contact with the jewelry with bleach, colognes, cosmetics and hair sprays, etc. All diamond jewelry $500 and up, purchased from Jewelry Unlimited, comes with an appraisal certificate. Various designer watches include an appraisal certificate from a certified diamond laboratory. Please refer to individual listings for the availability and nature of the certificate.

Ring Size/Ring Size Conversion

At Diamond City Jewelry, the majority of the women's rings are available in size 7 and the men's in size 10. Most of these rings can be sized up or down to 3 sizes. The ones that can't be sized, are often available on custom order. Please refer to the individual listings for the details on sizes and contact us to know the cost in case re-sizing is needed. Please click on the link below to view a comprehensive chart for conversion for your ring size in the US size.