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Insights & Guides

The Guru Diam Blog

Expert articles on lab-grown diamonds, wholesale sourcing strategies, and the latest trends shaping the jewelry industry.

Round Brilliant Diamonds Wholesale NYC
16 min read

Round Brilliant Diamonds Wholesale NYC

A round brilliant is the standard 57–58 facet diamond cut — a circular outline faceted specifically to maximize light return, producing the highest fire and brilliance of any diamond shape. Guru...

Princess Cut Lab-Grown Diamonds Wholesale Guide
17 min read

Princess Cut Lab-Grown Diamonds Wholesale Guide

A princess cut is a square (or slightly rectangular) brilliant-faceted diamond with sharp, uncropped corners — the second-most-requested engagement ring shape after round brilliant, prized for its...

Emerald Cut Diamonds Wholesale NYC
16 min read

Emerald Cut Diamonds Wholesale NYC

An emerald cut is a rectangular step-cut diamond with cropped corners, a large open table, and long parallel facets instead of brilliant-cut wedges — producing broad, mirror-like flashes of light...

Asscher Cut Lab-Grown Diamonds Wholesale
16 min read

Asscher Cut Lab-Grown Diamonds Wholesale

An Asscher cut is a square step-cut diamond with cropped corners and a deep pavilion — essentially a square emerald cut, faceted in concentric layers that produce a distinctive windmill-shaped...

Pear Shape Diamonds Wholesale NYC
16 min read

Pear Shape Diamonds Wholesale NYC

A pear shape diamond is a teardrop-outline brilliant cut — one rounded end like a round brilliant, tapering to a single point like a marquise — faceted for fire rather than the broad flat planes...

Oval Cut Diamonds Wholesale NYC
18 min read

Oval Cut Diamonds Wholesale NYC

An oval cut diamond is an elongated brilliant-cut diamond — essentially a round brilliant stretched along one axis — with no points or corners, full brilliant faceting for round-level fire, and a...

Heart Shape Diamonds Wholesale
17 min read

Heart Shape Diamonds Wholesale

A heart shape diamond is a modified brilliant cut — two symmetrical lobes meeting at a defined cleft at the top, narrowing through the wings to a single point at the bottom — faceted for fire and...

Radiant Cut Diamonds Wholesale NYC
18 min read

Radiant Cut Diamonds Wholesale NYC

A radiant cut diamond is a rectangular or square outline with trimmed corners and a full brilliant facet pattern — combining an emerald cut's clean silhouette with a round brilliant's fire. Guru...