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Welcome to our latest Casa D’Oro blog, where sophistication meets knowledge. Since 1984, we’ve been guiding our valued clients through the dazzling world of diamonds. Today, we’re addressing a crucial question: How can you tell if a diamond ring is real? In a market brimming with imitations, it’s essential to recognize authenticity.

Understanding the Basics of Diamonds

Diamonds, known for their unmatched hardness and brilliance, are nature’s marvels. Unlike common imitators like cubic zirconia or moissanite, genuine diamonds possess unique characteristics in composition and formation. 


At Casa D’Oro, we take pride in offering an exquisite selection of these natural treasures, from loose diamonds to bridal jewelry.

Visual Inspection Techniques

A real diamond’s allure is undeniable. Here’s how you can visually differentiate:


  • Sparkle and Brilliance: Genuine diamonds exhibit a remarkable sparkle, with a balance of white light (brilliance) and rainbow colors (dispersion).

Physical Tests to Determine Authenticity

These simple tests can offer insights:


  • The Water Test: Drop the diamond into water. A real diamond will sink.
  • The Fog Test: Fog the diamond with your breath. A real diamond won’t stay fogged for long.
  • The Heat Test: Briefly heating the diamond and then dropping it into cold water; a real diamond won’t crack.

Professional Appraisal and Certification

Our experts at Casa D’Oro, located within the elegant setting of the DoubleTree by Hilton, are always ready to provide professional appraisals. Trust in certifications from GIA or AGS, which we proudly offer with our diamond pieces.

Advanced Methods for Verification

UV Light Test: Under UV light, a real diamond will exhibit a blue fluorescence.

Using a Loupe: Our knowledgeable staff can assist you in examining diamonds with a jeweler’s loupe, revealing the minute characteristics of a genuine diamond.

Common Myths and Misconceptions

When it comes to diamond authenticity, there are several myths and misconceptions that often mislead consumers. Here are a few common ones:

The Breath Test Is Foolproof

  • Myth: If you breathe on a diamond and it stays fogged for a few seconds, it’s fake.
  • Reality: While real diamonds disperse heat quickly and won’t fog up easily, this test isn’t entirely reliable. Some high-quality imitations can also pass this test.

Newspaper Reading Test

  • Myth: If you can read a piece of newspaper through a diamond, it’s fake.
  • Reality: While a real diamond’s refractive properties should prevent clear newspaper reading, this test can be inaccurate due to diamond cut, size, and the reader’s eyesight.

Hardness Test on Glass

  • Myth: If a diamond can scratch glass, it’s real.
  • Reality: Many materials, including fake diamonds, can scratch glass. This test can damage both the diamond and the surface it’s tested on.

The Sparkle Color Indicates Authenticity

  • Myth: A real diamond will only show clear and white sparkles.
  • Reality: Genuine diamonds can display a spectrum of colors due to their light dispersion qualities.

Size and Weight Comparison

  • Myth: Fake diamonds are always larger or heavier than real ones.
  • Reality: Synthetic diamonds and imitations can be made in all sizes and weights, closely mimicking real diamonds.

Flawlessness Equals Authenticity

  • Myth: A real diamond has no imperfections.
  • Reality: Most natural diamonds have some imperfections or inclusions. In fact, a completely flawless stone is rare and may raise suspicions of it being synthetic or treated.

Tips for Buying a Diamond Ring

Trust Casa D’Oro for your diamond purchases. We offer a 100% money-back guarantee, low price guarantee, lifetime diamond upgrade, and accurate diamond grading.


Remember, when in doubt, seek the expertise of professionals like those at Casa D’Oro. We’re not just a store; we’re a part of your special moments, offering custom-made items, special orders, and repair services for watches and jewelry.

Eager to learn more or see our stunning collection in person? Make an appointment with us at Casa D’Oro, where luxury and expertise meet. Visit our website, explore our blog, or contact us for a personalized experience.