Four-Stone Seamless Radiant Cut Diamond Design

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Solution Overview

Problem

The high cost of larger diamonds is disproportionate to their size, making them expensive and difficult to afford, as the price does not scale linearly with size, prompting a need to reduce the expense associated with larger diamond jewelry.

Innovation Solution

A method for cutting and setting multiple Princess Cut Diamonds to create the appearance of a larger diamond, involving increasing the table size, repositioning the culet, and cutting the girdle facets to form a radiant cut shape, allowing four diamonds to be arranged to resemble a single large diamond, thereby reducing material and cost while maintaining visual appeal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a single large diamond is used, then the visual appeal and size are improved, but the cost increases disproportionately

Engineering Contradiction:
Improvediamond sizeVSAvoidcost
Core Design Contradiction:
Area of stationary objectVSEase of manufacture

Solution Approach 1:

The invention divides a single large diamond into multiple smaller diamond pieces (typically four princess-cut diamonds) that are then arranged and set together to form a radiant-cut appearance. This segmentation allows the use of smaller, more affordable diamonds while creating the visual effect of a larger stone, thereby reducing the disproportionate cost increase associated with obtaining a single large diamond.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If multiple diamonds are used to create a larger appearance, then the cost is reduced, but the structural complexity increases

Engineering Contradiction:
ImprovecostVSAvoidstructure
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The invention merges multiple separate diamond pieces into a unified radiant-cut design by arranging them in a specific pattern and setting them together in a single jewelry setting. The princess-cut diamonds are positioned with their corners meeting at the center, creating a seamless appearance that mimics a single stone. This merging approach consolidates the structural complexity into a standardized setting design, making the process manageable while achieving the cost benefits of using multiple smaller diamonds.

Inventive Principle:
Principle #5Merging (Combining)

3Area of stationary object

If the table size is increased, then the visual appeal is improved, but the material loss during cutting increases

Engineering Contradiction:
Improvetable sizeVSAvoidmaterial loss
Core Design Contradiction:
Area of stationary objectVSLoss of substance

Solution Approach 1:

Instead of cutting a single large diamond with a large table (which would result in significant material loss), the invention segments the original diamond into multiple smaller princess-cut diamonds. Each smaller diamond maintains a proportionate table size relative to its overall dimensions, optimizing the use of material. The combined table area of the multiple diamonds creates the visual appearance of a large table while minimizing the material loss that would occur in attempting to cut a single large-table diamond.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS10244833B2Four-stone seamless radiant cut diamond and method for making the same
Publication Date: 2019.04.02 SHAH SANEAL
  • US10244833B2 patent drawing
  • US10244833B2 patent drawing
  • US10244833B2 patent drawing

AI summary

Presented is a diamond comprising a table, a crown, a girdle, a pavilion, and a culet. The table is rectangular, having a length and a width. The table comprises a first side, adjacent to a second side, adjacent to a third side, and adjacent to a fourth side. The first side of the table is directly connected with a first facet of the girdle. The second side of the table is directly connected with a second facet of the girdle. The crown comprises a plurality of facets connecting the third side and the fourth side of the table to the girdle. The girdle comprises five facets, the five facets comprising the first facet and the second facet, a third facet, a fourth facet, and a radiant facet. The first facet, second facet, third facet, and fourth facet form three substantially 90 degree angles. The radiant facet connects the third facet and the fourth facet. The pavilion is connected to the girdle. The culet is positioned directly below a point having a 1% deviation from the center of the girdle.