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Diamond · Variety of Diamond

Pink Diamond

Fancy pink to vivid purplish-pink; Argyle grading scale from P1 to PP1

Pink Purplish Pink
Optical properties

Optical characteristics

Ref. index
2.417
Luster
Adamantine
Pleochroism
None None.
Fluorescence
Variable; many pink diamonds show orange to pink fluorescence under LW UV.
Origins

Source localities

South Africa South Africa: Cullinan / Venetia
Legendary ★ Top Source

Historic and important diamond source; some of history's most famous pink diamonds are from South Africa.

25% est. supply
Russia Russia: Ural Mountains / Siberia
Major

Classic source for alexandrite, demantoid, diamond and nephrite.

15% est. supply
Botswana Botswana: Jwaneng / Orapa
Premium

One of the most important diamond-producing countries.

10% est. supply
Australia Australia: New South Wales / Queensland fields
Premium ★ Top Source

Commercial sapphire and opal source; Argyle in Western Australia was the world's primary pink diamond source (closed 2020).

45% est. supply
Canada Canada: British Columbia / NWT / Labrador
Significant

Known for nephrite jade, diamonds and labradorite.

5% est. supply
Treatments

Enhancement & treatment

Color Enhancement HPHT Color Treatment High pressure high temperature treatment can remove brown color or create fancy colors in… Color Enhancement Irradiation, Diamond Irradiation changes diamond color by creating color centers, often followed by annealing. Disclosure is…
Inclusions

Inclusions & features

Crystals Crystal Inclusions Under 10x loupe: solid, well-formed mineral crystals trapped inside the host gem. They may… Clouds Pinpoint Clouds Under 10x loupe: concentrations of extremely tiny bright dots that individually are too small… Fractures Feathers and Fractures Under 10x loupe: irregular internal surfaces that catch light and appear bright, wing-like, or…
Identification

Instruments used

10x Loupe Your most-used instrument, start every examination here Thermal Probe Confirms diamond, but always follow up with a moissanite tester UV Lamp, Long Wave and Short Wave Fluorescence exposes treatments, synthetics, and origin DiamondView UV Imaging Deep UV imaging for diamond growth structure, HPHT clues, and lab-grown screening FTIR Spectrometer Laboratory infrared fingerprinting for polymers, fillers, coatings, and some treatments Raman and Photoluminescence Spectrometer Advanced spectral testing for gem ID, diamond color centers, and treatment evidence