A raw diamond looks like a dull, hazy, or glassy pebble, often opaque with a rough texture, rather than the sparkling gem in jewelry, typically appearing as irregular, water-worn stones or distinct octahedral (eight-sided) crystals, frequently with yellowish, brownish, or grayish tints, but sometimes rarer colors too.
Unlike their polished counterparts, which display a brilliant sparkle and fire, raw diamonds often have a rough exterior and may resemble ordinary rocks or pebbles. However, upon closer inspection, one can identify their distinct crystal structure, usually taking the form of an octahedron or tetrahedron.
Perform a scratch test. Scrape your gem against corundum and if it makes a scratch, you've got a real diamond on your hands. Diamonds have a density of 3.5 - 3.53 g/cm3, which you can test by dividing the weight of the stone by the weight of the stone suspended in water. Or, take your gem into a professional.
They have a glass-like shine, a rough texture, and natural facets. They're also heavier than most other stones. You can also test its hardness (diamonds are the hardest material) or check how it conducts heat to confirm it's a diamond.
GIA uses sophisticated devices like the GIA iD100® and other instrumentation to definitively identify natural diamonds. To confirm whether a diamond is natural or laboratory-grown, send it to a gemological laboratory for examination and advanced testing.
The Aquamarine name comes from the Latin word for seawater and is said to calm waves and keep sailors safe at sea. It is sometimes referred to as a poor man's diamond because of the pale color.
To determine a diamond's authenticity using a mirror, observe the mirror reflection test. Genuine diamonds display unique reflective quality, lack surface scratches, show no fogging effect, and their mirror symmetry highlights their real, unmatched brilliance.
Pure diamond is not magnetic.
Lab diamonds have significant value for their sparkle, chemical makeup (identical to natural diamonds), and affordability, offering a bigger stone for less money, but they are not good financial investments because their value drops sharply after purchase due to mass production, unlike the rarer natural diamonds that can retain or increase value. Buy them for beauty and personal enjoyment, not as a store of wealth.
Position the Diamond Under the Flashlight – Hold the stone at different angles while shining a beam through it. Look for Sparkle and Reflection – A genuine one will reflect brilliant white and rainbow colours due to its superior light dispersion.
Draw a small dot on a piece of paper and place the diamond flat on top. Look directly down through the stone. If you see the dot clearly, the stone is likely an imitation. A real diamond's high refractive index will scatter light, making it impossible to see the dot clearly.
Real diamonds don't fog up as long. If you take the stone and breathe on it—whether it's real or fake—it will fog up, just like a mirror. The difference, however, is in how long the fog lasts on the stone's surface. With real diamonds, the fog will disappear quickly because diamonds conduct heat.
When we shine a flashlight on a diamond, we're observing how the stone interacts with light. A real diamond refracts light in such a way that it sparkles with a gray and white brilliance, and can also cast rainbow colors onto a surface. The way a diamond reflects light is unique due to its high refractive index.
Stones or Gems That Look Like Diamonds
Some synthetic diamonds are magnetic. But diamonds are not.
Mobile apps may mimic testing, but they can't match the accuracy of professional instruments. Your phone won't replace a professional appraisal, but it can assist. Use the flashlight to observe how the stone handles light. A real diamond will produce sharp flashes and concentrated brilliance.
In some cases, diamonds fluoresce under shortwave ultraviolet light, have a specific gravity of 3.1-3.5, rank ten on the Mohs Hardness Scale, and form isometric crystals. Using these characteristics, it is possible to correctly identify an uncut rough diamond.
For the floating test, you need a loose diamond and a glass of water. If the diamond is real, it will drop to the bottom of the glass due to the high density of the stone. If the diamond is a fake, it will float on the surface of the water.
Diamond does not conduct electricity because it has no charged particles that are free to move. Graphite does conduct electricity because it has delocalised electrons which move between the layers.
If you hit it with enough force, or hit it in just the right way, almost anything can break—that is, separate into pieces. Even the hardest materials we know of—including diamonds, wurtzite, boron nitride, moissanite, and corundum—can be fractured. For instance, it's possible to shatter a diamond with a metal hammer.
Attracts Wealth and Success
Diamonds are the gemstones of luxury, and Venus is the planet of abundance. Wearing a diamond activates Venus's prosperity energy, believed to bring financial stability, professional growth, and new opportunities.
The optical properties and light interaction of diamonds affect their beauty. Diamonds remain invisible in total darkness, like other objects. However, there are different cases where diamonds can glow under specific light conditions.