GIA Melee Analysis Service

To address concerns about laboratory-grown and treated diamonds being mixed into parcels of melee, GIA has developed an automated system to analyse and sort melee-size diamonds quickly and accurately. The GIA Melee Analysis Service separates natural diamonds from simulants, laboratory-grown and potentially HPHT-treated natural diamonds for round and fancy-shaped melee. For round melee only, the screened diamonds can be sorted by colour range for an additional charge. Clients can also specify a size range for their round melee parcel. Once sorted, the melee will be sealed in secure packaging for shipment back to the submitting client. Now you can know with confidence that the diamonds in your supply chain are natural.

Results

Each result type will be delivered in a separate, secure package:

Outside of Service Criteria – The contents of this package are either outside requested of the sorting diameter range or outside of the submission criteria.
Stimulants – The contents of this package have been determined to not be diamond and are stimulants.
Laboratory-Grown – The contents of this package have been identified as laboratory-grown diamonds.
HPHT Treated Natural – The contents of this package have been identified as HPHT treated natural diamonds.
Round Natural – The contents of this package have been identified as round natural diamonds.
Fancy-Shaped Natural – The contents of this package have been identified as fancy-shaped natural diamonds.
Color Sorting Options for round diamonds

D-to-E, F-to-G, H-to-I, J-to-Z
D-to-F, G-to-H, I-to-J, K-to-Z
D-to-F, G-to-I, J-to-L, M-to-Z
D-to-G, H-to-I, J-to-K, L-to-Z
No Color Sorting

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About GIA

Established in 1931, GIA protects the public through gemmological research, education, impartial gem identification and grading services, and instrument development. The world’s foremost authority in gemmology and creator of the 4Cs, GIA sets the standard for determining the quality of diamonds and performs research-based identification of coloured gems and pearls. All of GIA's activities are governed by its mission to serve the public. Learn More