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0.51ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • GIA 2566402667

Certificate GIA 2566402667

Diamond specifications and retailer prices

From $2,099 AUD
$1,471 USD
As of November 1, 2026
Save $2,796 AUD (57%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,895 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566402667. Listed at 2 retailers as of October 29, 2026, with prices from $2,099 to $4,895, a $2,796 spread on the same certified stone. MOH London lists it at $4,895. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 2566402667
Dimensions5.13 × 5.11 × 3.17 mm
L/W Ratio1.00
Top View
5.13 mm5.11 mm0.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566402667
Side View
Table 57.0%CrownGirdlePavilionCuletDepth 61.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: $4,895 AUD|Low: $2,099 AUD|High: $5,041 AUD|Avg: $3,355 AUD|-2.9%
MOH London
Retailer 2
October 29, 2026
Retailer 2$2,099 AUD
MOH London$4,895 AUD

4 data points across 2 retailers

2 retailers$2,099 AUD to $4,895 AUD

B
Cheapest Retailer
-
$2,099 AUD
$1,471 USD
Most Expensive
B
MOH London
2566402667 · Oct 29
$4,895 AUD
£2,701 GBP
View
1 more retailer has this diamond
Prices start from $2,099 AUDSave up to $2,796 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
0.51ct Round
$2,099 AUD