No two diamonds are created exactly alike and this makes comparing diamonds to one another very difficult. With the right amount of diamond knowledge you'll be able to select the perfect diamond while investing in quality characteristics that you determine are important. Use our Engagement Ring Handbook to gain the understanding you'll need to make a healthy decision.
Choosing a diamond size is largely dependent on the quality grade that you like most and the budget that you have set. In addition you'll need to determine how the diamond will be set. Some ring styles look better with very specific diamond sizes. Take a look at the pictures below to get a feel for how much it will cost to buy a diamond of a particular size and how it will look in a ring.
Casual Conversation with your partner may uncover what would be an appropriate choice for a diamond. Princess and round cut diamonds are the most popular choice for engagement rings. You'll find that most ring mountings are designed specifically to hold round or princess cut diamonds. Recently, emerald and asscher cuts have become an increasingly popular choice for women that want something different.





Rokstok has over 40 years experience buying and selling diamonds and our success has been built on helping our customers make the most educated decision possible. Below you'll find a summary of the components of diamond quality. You can get a more in depth education by visiting our Teach Yourself the 4C's Handbook.
In the past the cut of a diamond has been described as it's shape and while this is partially true, it does not tell the entire story. The cut is what the diamond cutter must do to bring the brilliance out of a diamond. A poorly cut diamond will not reflect as much light as a masterfully cut diamond. Rokstok carries only the finest cut diamonds made to reflect optimal amounts of light. 
The color of a diamond affects it value and beauty, it's defined as the shading or overall hue of the diamond. A diamond can be yellow, gray, brown, red, blue, pink, or green. Poor quality diamonds most commonly have yellow, brown or gray shades to them. A finer quality diamond is considered colorless because it has a lack of all color and appears more transparent. 
Diamonds that have imperfections or "inclusions" that are easily seen to the naked are considered lower quality and lesser in value. Rokstok only offers diamonds that do not have inclusions visible to the naked eye; this would mean the diamond must have a clarity grade of SI2-Flawess. 
A diamond's value is most affected by the carat weight and larger diamonds can become exponentially more valuable with slight increases in size. A diamond is weighed not measured and unit of weight for diamonds is called the carat. A full carat diamond weighs 100 carat points.