Best Diamond Shapes for Lab Grown Diamonds (Complete Buying Guide)

Choosing the right diamond shape is one of the most important decisions when buying lab grown diamonds. The shape not only defines the overall look of the jewellery but also affects brilliance, size appearance, price, and personal style.

This complete buying guide explains the best diamond shapes for lab grown diamonds, helping you select the perfect option for engagement rings, earrings, pendants, and custom jewellery.

Why Diamond Shape Matters in Lab Grown Diamonds

Lab grown diamonds offer excellent quality, consistency, and value, making them ideal for exploring a wide range of shapes. Since lab diamonds are more affordable than natural diamonds, buyers can choose premium shapes and larger sizes without exceeding their budget.

Diamond shape affects:

• Sparkle and brilliance

• Visual size appearance

• Overall jewellery design

• Pricing

1. Round Brilliant Cut

The round brilliant cut is the most popular and timeless diamond shape.

Why it works well for lab grown diamonds:

• Maximum brilliance and sparkle

• Ideal for engagement rings

• Excellent symmetry and light performance

Round lab grown diamonds are usually priced slightly higher than other shapes, but they deliver unmatched brilliance.

Best for: Engagement rings, solitaire rings, classic jewellery designs.

2. Oval Shape

Oval diamonds are elegant and modern.

Advantages of oval lab grown diamonds:

• Appear larger than round diamonds of the same carat

• Elongated shape makes fingers look slimmer

• Excellent brilliance similar to round cut

Oval lab grown diamonds offer great value and are highly popular among modern buyers.

Best for: Engagement rings, statement rings.

3. Cushion Cut

Cushion-cut diamonds have a soft, romantic appearance.

Why choose cushion lab grown diamonds:

• Vintage-inspired look

• Rounded corners for durability

• Beautiful fire and depth

Cushion shapes work very well with lab grown diamonds because clarity and color can be optimized at a better price.

Best for: Engagement rings, vintage-style jewellery.

4. Princess Cut

The princess cut is a square-shaped diamond known for sharp brilliance.

Benefits of princess lab grown diamonds:

• Modern and bold appearance

• Excellent sparkle

• More affordable than round diamonds

This shape is perfect for buyers who prefer clean lines and contemporary design.

Best for: Engagement rings, solitaire rings.

5. Emerald Cut

Emerald-cut diamonds are all about elegance and clarity.

Why emerald lab grown diamonds stand out:

• Step-cut facets create a mirror-like effect

• Sophisticated and luxurious appearance

• Highlights diamond clarity

Lab grown diamonds are ideal for emerald cuts because higher clarity grades are more accessible.

Best for: High-end rings, pendants, luxury jewellery.

6. Pear Shape

Pear-shaped diamonds combine round and marquise styles.

Advantages of pear lab grown diamonds:

• Unique and eye-catching design

• Elongated shape gives a larger appearance

• Great brilliance when well cut

Pear shapes are excellent for buyers seeking something distinctive.

Best for: Engagement rings, pendants, earrings.

7. Marquise Cut

Marquise diamonds are bold and dramatic.

Why marquise lab grown diamonds are popular:

• Maximizes visual size

• Elongated shape enhances finger appearance

• Vintage yet unique appeal

Lab grown diamonds allow buyers to choose marquise shapes with better proportions and quality.

Best for: Statement rings, designer jewellery.

8. Radiant Cut

Radiant cut combines brilliance with sharp edges.

Why radiant lab grown diamonds work well:

• Strong sparkle

• Square or rectangular shape options

• Durable trimmed corners

Radiant cuts hide inclusions well, making them ideal for lab grown diamonds.

Best for: Engagement rings, modern designs.

How to Choose the Best Shape for You

When selecting a diamond shape, consider:

• Your personal style

• Finger shape and hand size

• Type of jewellery

• Budget and size preference

Lab grown diamonds give you the flexibility to prioritize shape without compromising on quality.