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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 $1,193 USD
As of November 6, 2026
Save $1,882 USD (61%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,075 USD 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 $1,193 to $3,075, a $1,882 spread on the same certified stone. MOH London lists it at $3,075. 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: $3,075 USD|Low: $1,193 USD|High: $3,075 USD|Avg: $1,672 USD
MOH London
Retailer 2
November 1, 2026
Retailer 2$1,193 USD
MOH London$3,075 USD

3 data points across 2 retailers

2 retailers$1,193 USD to $3,075 USD

B
Cheapest Retailer
-
$1,193 USD
Most Expensive
C
MOH London
2557991606 · Nov 3
$3,075 USD
£2,421 GBP
View
1 more retailer has this diamond
Prices start from $1,193 USDSave up to $1,882 USD

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
$1,193 USD