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0.51ct F SI2 Round Lab Grown Diamond

EX • F/SI2 • GIA 2557991606

Certificate GIA 2557991606

Diamond specifications and retailer prices

From $1,666 CAD
As of November 6, 2026
Save $2,628 CAD (61%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,294 CAD at MOH London · As of November 3, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557991606. Listed at 2 retailers as of November 3, 2026, with prices from $1,666 to $4,294, a $2,628 spread on the same certified stone. MOH London lists it at $4,294. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 2557991606
Dimensions5.17 × 5.13 × 3.15 mm
L/W Ratio1.01
Top View
5.17 mm5.13 mm0.51 ctF / SI2
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557991606
Side View
Table 59.0%CrownGirdlePavilionCuletDepth 61.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $4,294 CAD|Low: $1,666 CAD|High: $4,294 CAD|Avg: $2,335 CAD
MOH London
Retailer 2
November 1, 2026
Retailer 2$1,666 CAD
MOH London$4,294 CAD

3 data points across 2 retailers

2 retailers$1,666 CAD to $4,294 CAD

B
Cheapest Retailer
-
$1,666 CAD
Most Expensive
C
MOH London
2557991606 · Nov 3
$4,294 CAD
£2,421 GBP
View
1 more retailer has this diamond
Prices start from $1,666 CADSave up to $2,628 CAD

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
$1,666 CAD