Are Colar CVD lab-grown diamonds chemically identical to mined diamonds?

Yes, Colar CVD lab-grown diamonds possess the exact same chemical composition, optical brilliance, and isometric crystal structure (Type IIa) as mined natural diamonds.

Do Colar lab-grown diamonds carry IGI and GIA certification?

All Colar wholesale lab-grown diamonds are independently graded and certified by international gemological institutes such as IGI and GIA with laser girdle inscriptions.

Where is Colar Diamond's manufacturing facility located?

Our state-of-the-art CVD growth reactors and lapidary diamond cutting facilities are located in Surat, Gujarat, India.

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CVD Diamond Shape Guide

Asscher Cut
Lab-Grown Diamonds

Developed in 1902 by the Asscher Brothers of Holland, this square step-cut diamond features deeply cropped corners and concentric square pattern facets that produce an hypnotic 'windmill' optical effect.

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Gemological Specifications

Cut StyleSquare Step Cut (Octagonal Profile)

Facet Count58 step facets

Ideal Ratio1.00 - 1.05 (Pure Square Windmill)

Table Range61% - 69%

Depth Range61% - 67%

Brilliance Rating 8.0 / 10 (High Luster & Deep Optical Focus)

Size & Footprint Analysis

Asscher Cut Carat Dimensions & Face-Up Size

Standard millimeter dimensions and visual characteristics across key carat weights for Asscher Cut solitaires.

1.00 Carat5.50 × 5.50 mm

Classic square windmill reflection pattern.

2.00 Carat7.00 × 7.00 mm

Deep step-cut facets showcasing crystal purity.

3.00 Carat8.00 × 8.00 mm

Ultra-luxurious Art Deco statement piece.

5.00 Carat9.80 × 9.80 mm

Collector-grade heritage solitaire.

Manufacturer Standards

Why Source Asscher Cut CVD Diamonds From Colar Diamond?

High clarity Type IIa CVD grown crystal focus (VVS1-VS1)

Strict square ratio with deep cropped corner symmetry

100% Type IIa CVD crystal growth without post-growth treatment strain

Direct factory wholesale prices with global insured express delivery

Gemological Comparison

How Asscher Cut Compares to Alternatives

Asscher Cut vs. Emerald Cut

Asscher is a square step cut with larger windmills, while Emerald is rectangular.

Asscher Cut vs. Princess Cut

Asscher is a step cut with mirror facets, while Princess is a brilliant multi-facet cut.

Wholesale Procurement

Ready to Order Asscher Cut CVD Diamonds?

Access real-time stock lists with 360° HD videos, IGI certificates, and volume wholesale pricing directly from our Surat factory.

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Asscher Cut Lab-Grown Diamonds