Rough Color Grading

How the service works is described in Rough Color Grading. In Cutwise, the Estimate Color menu shows the current prices under Prices, and About process and pricing opens the full table.

Rough Color Grading

One charge per rough, covering the four example diamonds. It depends on the ViBox 2.0 scanner that captured the rough and on how much of the frame was cropped away around the rough.

A wide scanner sees a 19.7 mm field of view, a narrow one 10.6 mm. A capture is counted as the scanner whose field of view is nearer to the measured one. A capture whose field of view is unknown is charged as wide, cropped up to 30%: €1.00.

Plan estimation

Each planned diamond is charged by its verdict, so the final price is known only after grading. Before you start, the selection dialog shows the range from the cheapest to the dearest outcome.

D–Z and borderline diamonds

A D–Z or borderline diamond is charged only when HP Carbon has measured its DZLite spectrum. A diamond graded D–Z by Cutwise alone is free and does not count in the sequence below.

The count includes the charged D–Z diamonds of this rough estimated earlier, so a later batch continues the sequence rather than starting it again.

Fancy diamonds

Each fancy diamond is charged by its own grade: €2 per carat, the same rate as the fancy color grade in Cut Evolution, multiplied by size, saturation and hue factors.

The rate is €0.75 to €36 per carat, times the carat weight of the planned diamond. A diamond of exactly 1 ct or 3 ct is in the 1–3 ct row. The rate never exceeds the upper limit below.

Upper limit per carat

Rough Color Grading always grades a large radiant example cut of the rough (radiant, about 40% yield). It is the most color-intense, and so the dearest, solution a rough is expected to give. A fancy diamond planned from the rough is never charged more per carat than that radiant would be: €2 per carat times the radiant's size, saturation and hue factors.

The solution grading menu shows the limit before you start, as "up to €X per ct". The bill line of a capped diamond says "capped at €X/ct".

• If your diamond grades lower than the radiant (lighter saturation, yellow or brown hue, a smaller size bracket), the regular formula applies and its per-carat price can be below the limit.
• If the large radiant itself is not graded fancy, there is no limit and the regular formula applies.
• D–Z and borderline diamonds are priced per diamond as before. The limit does not apply to them.

When the charge is made

• Only for finished work. A failed or cancelled Rough Color Grading is not charged.
• In a plan estimation, only diamonds that received an estimate are charged.
• Uploading and converting an STL or ASC file is free.
• Plan estimation checks the balance before it starts.