Rubies vs. Diamonds: A Comparison Guide

Rubies vs. Diamonds: A Comparison Guide

 Diamonds: A Comparison Guide

Experts and aficionados know that diamonds and rubies are two of the most valuable and popular precious gems in the world. While diamonds are known to be a girl’s best friend, rubies inspire more elegance and nobility thanks to their deep color and rarity.

It’s not something uncommon for certain people to prefer both rubies and diamonds. After all, they have both been worn by royal figures throughout history. However, why opt for one and not the other? In this article we will be looking at specifications like color and brilliance to cut, clarity, and most important, price.

A Comparison Guide Between Rubies and Diamonds

When it comes to colored gemstones, rubies are the ones that usually sport the steepest price tags. Over the years, the per-carat prices of rubies have been increasing sometimes even to record-breaking standards. The same goes for colored diamonds which are currently being sold for millions all over the world. Make sure to check this source for an in-depth comparison between rubies and diamonds, especially in what concerns the color issue and the amount of money some people are willing to pay for these valuable stones.

In today’s article we will be looking at how rubies and diamonds differ in terms of clarity, cut, weight, and size.

Rubies vs. Diamonds: A Comparison Guide


For both diamonds and rubies, the clearer the stone, the more expensive it is.

Diamonds – imperfections, called inclusions, do not matter too much in most cases because they are usually microscopic. However, even if extremely rare, perfect diamonds do exist.

Rubies – are a special case here because all of them have at least some tiny inclusions. Traders worldwide always take them into consideration because there are no such things as completely-clear rubies. So, in this case, a ruby’s price depends on how visible or big these inclusions are. Large inclusions affect the stone’s brightness and transparency while also drastically reducing its durability.

Still, there are some inclusions that benefit the ruby’s appearance like the rutile silk which causes a lightning effect on the stone’s facets. Then there are also the imperfections called needles which can cause the so-called star effect or asterism.


Cut refers to a gemstone’s proportions, polish and even symmetry.

Diamond – the cut is the most important aspect that influences its price and value. Only the most skilled experts are able to correctly analyze a diamond’s cut perfectly and assess its characteristics. It influences a diamond’s appearance in three ways:

  • Brilliance: depending on the cut, the combination of the white light reflections from the surface and from the inside of a diamond can vary.
  • Fire: this term refers to the flashes of color that the naked eye can perceive when looking at the diamond, the dispersion of the light.
  • Scintillation: this is the effect that takes place when either the diamond or a source of light is moved and creates flashes of light and dark.

Ruby – the cut is also very important. Usually, most cutters create flat tabular hexagonal shapes out off rubies, but they can be also elongated. A very special thing that influences a ruby’s cut is the pleochroism, meaning the different colors that appear in the gemstone in different crystal directions. On the market, you may also find pear-shaped, triangular, round, emerald-cut or marquise rubies, but they are rare and expensive.

Rubies vs. Diamonds: A Comparison Guide

Weight and Size

Diamond – there is a common misconception in what concerns the term carat in a diamond. In fact, it refers to its weight, not its size, as many people believe. A valuable expert advice would be to rather look for a diamond that has a better cut than a bigger one with maybe a poor or unflattering cut.

Rubies – are usually available in a lot of sizes. Fine-quality rubies are over one carat and are very rare and expensive. For a bigger ruby, the price per carat also goes up significantly.


All in all, choosing between a diamond and a ruby is undoubtedly a difficult task, but it all depends on what you prefer. Apart from this, the stone’s price and availability can influence someone’s decision to buy one or the other. Keep in mind that rubies are fairly harder than diamonds, meaning that they are more likely to remain perfect and not scratch for longer. As for durability, a diamond is a better choice and a stone that you can pass on to the future generations. So, it can really be a struggle to choose.


You may also like....