CaratHunter
Plans
Round|Lab Grown|GIA

0.51ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • GIA 2558495929

Certificate GIA 2558495929

Diamond specifications and retailer prices

From $975 AUD
£539 GBP
As of November 2, 2026
Save $802 AUD (45%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,777 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2558495929. Listed at 3 retailers as of November 1, 2026, with prices from $975 to $1,777, a $802 spread on the same certified stone. MOH London lists it at $1,777. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 2558495929
Dimensions5.15 × 5.13 × 3.18 mm
L/W Ratio1.00
Top View
5.15 mm5.13 mm0.51 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558495929
Side View
Table 56.0%CrownGirdlePavilionCulet: NoneDepth 61.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $1,777 AUD|Low: $924 AUD|High: $1,844 AUD|Avg: $1,275 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
November 2, 2026
Retailer 2$975 AUD
Retailer 3$999 AUD
MOH London$1,777 AUD

39 data points across 3 retailers

3 retailers$975 AUD to $1,777 AUD

B+
Cheapest Retailer
-
$975 AUD
£539 GBP
B+
Retailer 2
-
$999 AUD
€668 EUR
View
Most Expensive
B
MOH London
DB336F46E · Nov 1
$1,777 AUD
£983 GBP
View
2 more retailers have this diamond
Prices start from $975 AUDSave up to $802 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
$975 AUD