In the jewelry industry, gemstones are classified by their hardness and durability using the Mohs scale. While diamonds are the absolute hardest mineral at a 10, Rubies and Sapphires score a very respectable 9, making them excellent, durable choices for an engagement ring.

Emeralds, however, range from 7 to 8.5, and other beautiful semi-precious stones (like Amethyst or Citrine) score between 7 and 8. Because these stones are lower on the scale, they are significantly softer, more brittle, and much more vulnerable to scratches and chips over the long term. If you choose a softer stone, you must design the ring with protection in mind.

Large gemstones typically sit high on the finger and protrude, making them prone to catching physical impacts.

If you select a softer gemstone, a standard prong setting is highly risky. We strongly advise using a closed, protective setting—such as a Bezel (a metal rim that wraps around the stone) or a Halo. This structure acts as a physical bumper, ensuring the stone does not take direct hits that could easily cause chips or cracks.

Here is a closely guarded industry secret: resizing a gemstone ring is an incredibly delicate and dangerous process.

The high heat from a jeweler's torch required to resize the gold band can literally cause a colored gemstone to explode. To avoid this catastrophic damage, the master setter often must completely remove the gemstone from its setting before resizing the band—a risky and complex process. Therefore, it is crucial to make every possible effort to determine the exact ring size *before* the ring is crafted.

Did you know that the fingers on your dominant right hand are almost always a full size thicker than your left hand? Furthermore, in Singapore's hot climate, blood vessels expand and fingers naturally swell. If you are trying to find her size secretly, do not use an app. The most effective professional method is to place a round ring she already wears flat on a ruler to measure its inner diameter.

Unlike diamonds, which are faceted for maximum light return and brilliance, colored gemstones are cut with one primary goal: to maximize color.

This means gemstones are often cut much heavier and bulkier than diamonds, typically with a very thick girdle (the middle belt of the stone). If a cutter tries to make the stone too flat or shallow, the color will physically leak out, creating an unattractive, transparent "window" in the center of the gem.

Note: While some gemstones are cut in a smooth, unfaceted dome shape called a "Cabochon," this style is generally considered less prestigious and is rarely used for engagement rings.

While diamonds love a vigorous cleaning in an ultrasonic machine or a steamer, placing a colored gemstone in one is extremely dangerous. The powerful vibrations can easily destroy, shatter, or crack softer stones, especially those with natural internal inclusions. To keep your gemstone looking brilliant, it must be carefully and gently cleaned by hand.

In the world of colored gemstones, visual beauty does not always dictate the price. Origin plays a massive, premium role.

For example, a Ruby sourced from Burma will cost significantly more than a visually identical Ruby from Mozambique, simply because of its geographic pedigree [13, 14]. Our professional advice is simple: unless you are buying purely for financial investment, buy with your eyes. Choose the specific hue, tone, and shape you fall in love with, rather than paying a massive premium just for the origin listed on the certificate.