Lab-Grown Diamond Guide
Do Lab-Grown Diamonds Lose Their Sparkle?
Why a lab-grown diamond may look dull, how to clean it safely, what to avoid and when to have its stone and setting professionally checked.
Do lab-grown diamonds lose their sparkle? Their crystal structure does not fade over time or lose its ability to produce sparkle. However, a diamond's surface needs to be clean for it to reflect light. When skin oils, hand cream, soap, make-up and dust form a layer on the facets, the stone can look duller.
Why Might the Sparkle Seem Reduced?
Build-Up of Oils and Cream
A diamond can attract oils to its surface. A thin layer, particularly underneath the stone, reduces the amount of light entering and leaving it.
Soap and Mineral Residue
Showering with a ring or washing your hands frequently can leave soap and mineral residue in the setting.
Dirt Beneath the Setting
Even if the top of the stone looks clean, the prongs and lower gallery may be dirty. With less light entering, the surface can look less bright.
Dulling of the Metal Surface
Sometimes the problem is not the stone: the gold setting may be scratched or its plating worn. This reduces the overall sparkle of the ring.
Damage or Prong Problems
A hard impact can damage the edge of the stone or loosen the setting. A sudden change in appearance calls for a professional inspection.
Safe Cleaning at Home
- Add a small amount of mild washing-up liquid to lukewarm water in a small bowl.
- Soak the ring for 15–20 minutes.
- Gently clean the top and underside of the stone and the spaces between the prongs with a very soft brush.
- Rinse thoroughly with lukewarm water.
- Dry on a soft, lint-free cloth.
If you are working over a sink, close the drain. Do not brush the ring at home if the stone is loose or the setting is damaged.
What to Avoid
- Bleach and harsh chemicals
- Toothpaste and abrasive powders
- Hard-bristled brushes
- Boiling water and sudden temperature changes
- Ultrasonic devices whose suitability for the setting is unknown
- Trying to test the stone by scratching it
Is Ultrasonic Cleaning Safe?
Ultrasonic cleaning can be effective for secure solitaire settings, but it can pose a risk with loose prongs, many small stones or certain treated stones. Have a jeweller check the setting first.
How Often Should It Be Cleaned?
Rings worn daily can be gently cleaned at home every few weeks. The frequency of professional maintenance depends on how the ring is worn. If anything moves or rattles, catches on a prong, or appears misshapen, have it checked without delay.
Everyday Habits to Preserve Sparkle
- Remove the ring when applying cream or perfume.
- Do not wear it during sports, cleaning or gardening.
- Store it separately from other jewellery.
- Hold the band rather than the stone when removing it.
- Have the prongs and stone checked regularly.
See how setting structure affects care in the solitaire setting guide.
Frequently Asked Questions
Do lab-grown diamonds turn yellow?
Their crystal structure does not turn yellow under normal wear. When the rhodium plating on a white gold setting wears over time, the ring can look warmer; this does not mean that the stone has changed colour.
Can a diamond be scratched?
Diamond is very hard, but hardness does not mean it is unbreakable. Another diamond can scratch its surface, and a strong impact can damage its edges.
Can a dull diamond regain its original appearance?
If the problem is a layer of dirt and oil, proper cleaning restores the sparkle. Damage or setting problems require professional attention.
Read the lab-grown diamond buying guide to learn about care conditions before buying.