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Care of Enhanced Color Diamonds

By Stuller Technical Team




Enhanced color diamonds are an affordable way to add a splash of color
to any design. These color enhancements are done through one of two
methods, irradiation or high pressure/high temperature (HPHT).

Here is a chart that highlights which stones are enhanced using each
of these methods.
Color Irradiation HPHT
Aqua Blue      ✓    –
Teal Blue      ✓    –
Dark Green      ✓    –
Apple Green      ✓    –
Yellow      ✓    ✓
Pink      ✓    ✓
Purple      ✓    ✓
Burnt Orange      ✓    –
Garnet Red      ✓    –



Another important aspect of educating yourself on enhanced color
diamonds is understanding how to care for them. Knowing this, we
have some tips to help you work with and maintain the brilliance of
these stones.

Irradiated Diamonds

Irradiated enhanced color diamonds, like all diamonds, are legendary for
their hardness and durability, resistant to general wear and tear, and not
subject to change over time. Therefore, they require no special attention in
daily use. It is only when they are subjected to temperatures above 450°C
(900°F) that great care is needed. Generally, the only time this happens at
a jeweler’s bench is during the resizing of a ring.

When resizing a ring with an irradiated enhanced color diamond, the stone
needs to be protected from direct exposure to high temperatures. Covering
the stone with Heat Shield, or another protective solution does this. After
the diamond is cooled, the protective solution can be removed in a pickle
pot compound.

Setting: Irradiated enhanced colored diamonds can be set in most ways,
including channel-set, prong-set, invisible-set, bezel-set, flush-set or used
in pavé. However, these stones cannot be wax-set because that process
involves high temperatures.

Cleaning: Irradiated enhanced colored diamonds can be cleaned just
like regular white diamonds, using steam, ultrasonic, acid or any jewelry
cleaner. To clean a colored diamond at home, use a soft toothbrush and
soapy water.

HPHT Diamonds

HPHT enhanced colored diamonds require the least care. Like all
diamonds, HPHT colored diamonds are known for their hardness and
durability, resistant to general wear and tear, and not subject to change
over time. They require no special attention in daily use, and can also be
subjected to high temperatures.

Setting: HPHT enhanced colored diamonds can be set in all ways including
channel-set, prong-set, invisible-set, wax-set, bezel-set, flush-set or used
in pavé.

Cleaning: HPHT enhanced colored diamonds can be cleaned just like
regular white diamonds using steam, ultrasonic, acid or any jewelry
cleaner. To clean a colored diamond at home, use a soft toothbrush and
soapy water.

With these easy tips in mind, you can sell enhanced colored diamonds
with confidence.