Lab Grown Diamond Guide

Understand the 4 Cs (Still Apply to Lab Diamonds)

Cut (MOST important)

• Determines how much the diamond sparkles
• Always prioritise Excellent / Ideal cut
• A well-cut diamond will look better even if other factors are slightly lower

 

Colour

• Graded from D (colourless) → Z (yellowish)
• Best value range: G–H (looks white but cheaper)
• D–F = premium pricing, minimal visible difference to most eyes

 

Clarity

• Measures internal flaws (inclusions)
• Best value: VS1–VS2 (usually “eye-clean”)
• Avoid paying extra for flaws you can’t see

 

Carat (Size)

• Bigger = more expensive (but lab diamonds cost ~60–80% less than mined)
• Tip: Slightly under popular weights (e.g. 0.9 instead of 1.0) saves money

 

Lab Diamond Types (Important!)

There are two main growing methods:

• CVD (Chemical Vapor Deposition)
  → More common, usually better value
• HPHT (High Pressure High Temperature)
  → Can produce higher colour grades

Both are real diamonds (not fake), same hardness and sparkle as mined.

 

Certification (non-negotiable)

Please note you do not get this with melee stones ie very small 3mm and smaller, its just not cost effective to send them to the lab. Only buy diamonds with grading from trusted labs:

• GIA (Gemological Institute of America)
• IGI (International Gemological Institute)

Avoid uncertified stones—quality claims may be inflated.

 

Best Value “Sweet Spot” (Recommended Combo)

If you want maximum impact for your money:

• Cut: Excellent
• Colour: G–H
• Clarity: VS1–VS2
• Carat: As large as budget allows

This combo gives a diamond that looks premium without overpaying.