the platform to help you

select & reject

the best cut diamonds

The best cut diamonds look LARGER & sparkle MORE. If you or your customers are looking for diamonds with maximum light return, HCA will help you to select the best of the best XXX GIA & IGI cut diamonds.

CONSUMER BUSINESS PLANS

PREMIUM BULK PLANS

How HCA works

HCA rates a diamond’s cut

Holloway Cut Adviser rates a diamond’s cut in lay terms for its light return, fire, scintillation and spread (how big the diamond is for its weight). A diamond with an HCA grade of excellent is rare and means this diamond is good for further consideration.

Diamonds scoring HCA 1.0 – 2.0 = Superior Sparkle
Diamonds scoring below 1.0 may be more suitable for earrings and pendants

ASSESS

single

round diamond

UPLOAD A SINGLE
ROUND DIAMONDS

Use HCA to select the very best GIA or IGI XXX cut diamonds.You will reject more than 80%.

Reject diamonds with HCA scores greater than 2.0 to 2.5.

SEE BUSINESS PLANS

Or check our GUIDE below for easy steps

ASSESS

bulk

round diamonds

UPLOAD A CSV FILE UP TO
100,000 ROUND DIAMONDS

In minutes receive HCA scores for up to 100,000 round diamonds.

Filter, sort and reject diamonds with a HCA scores greater than 2.0 to 2.5.

Sell the best looking diamonds for a premium and make a better return.

REDUCE YOUR RETURNS HAPPIER CLIENTS

SEE PREMIUM PLANS

Or check our GUIDE below for easy steps

How to use the HCA tool in 3 Easy Steps

Check our GUIDE below

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Emerald cut diamonds are special and faceted in a way that makes them look very distinct.

1

Register a new account and select a Business Plan to assess a Single Diamond
or a Premium Plan for Bulk Diamonds.

See Our Plans or Log in

2

TO ASSESS A SINGLE DIAMOND:

Enter GIA Report Number OR
The Diamond Proportions from the GIA report

TO ASSESS BULK DIAMONDS:

1. Enter a .csv file into HCA of your inventory, a suppliers or competitors.
2. Download the round diamonds you need from RapNet® IDEX® or GetDiamonds®.

Download HCA-Upload-Requirements-v1.2
Download Sample HCA bulk file

3

Get the report with an HCA score of your diamond and its Looks Like size.

IDEAL-SCOPE

The Ideal Scope is a cut quality assessment tool for round diamonds. Its translucent cone and magnifying lens create a structured light environment that reveals areas of brightness, leakage, and contrast when placed over a diamond.

When you have narrowed your search to a few candidates, with help of the HCA tool, we suggest you request Ideal-Scope images, or buy your own Ideal-scope.

Ideal-Scope is a simple bright colored reflector with a viewing hole and lens. It creates what is known as a structured light environment.

Learn more about Ideal-scope

HOW DOES HCA WORK?

All of the information and how the backend works can be discovered at www.diamond-cut.com.au or (U.S. Patent 7,251,619)