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0.51ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • GIA 2566108414

Certificate GIA 2566108414

Diamond specifications and retailer prices

From $1,227 AUD
As of November 6, 2026
Save $1,645 AUD (57%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,872 AUD at MOH London · As of November 1, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566108414. Listed at 2 retailers as of November 1, 2026, with prices from $1,227 to $2,872, a $1,645 spread on the same certified stone. MOH London lists it at $2,872. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginLab Grown
Grading LabGIA
CertificateGIA 2566108414
Dimensions5.16 × 5.15 × 3.20 mm
L/W Ratio1.00
Top View
5.16 mm5.15 mm0.51 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2566108414
Side View
Table 58.0%CrownGirdlePavilionCuletDepth 62.1%

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: $2,872 AUD|Low: $1,227 AUD|High: $2,972 AUD|Avg: $1,989 AUD|-3.4%
MOH London
Retailer 2
November 1, 2026
Retailer 2$1,227 AUD
MOH London$2,872 AUD

5 data points across 2 retailers

2 retailers$1,227 AUD to $2,872 AUD

B
Cheapest Retailer
-
$1,227 AUD
Most Expensive
C
MOH London
2566108414 · Nov 1
$2,872 AUD
£1,583 GBP
View
1 more retailer has this diamond
Prices start from $1,227 AUDSave up to $1,645 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
$1,227 AUD