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1.25ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG776601800

Shape and cutting style on the report: Round brilliant

Certificate IGI LG776601800

Diamond specifications and retailer prices

From $589 AUD
As of November 5, 2026
Save $983 AUD (63%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,571 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG776601800 or 776601800. Listed at 6 retailers as of November 2, 2026, with prices from $589 to $1,571, a $983 spread on the same certified stone. MOH London lists it at $1,571. 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

1.25
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776601800
Dimensions6.93 × 6.91 × 4.23 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.93 mm6.91 mm1.25 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776601800
Side View
Table 61.0%Crown 33.9°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,571 AUD|Low: $517 AUD|High: $1,589 AUD|Avg: $814 AUD|+2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 4, 2026
Retailer 5$589 AUD
Retailer 4$636 AUD
Retailer 2$669 AUD
Retailer 3$720 AUD
Retailer 6$846 AUD
MOH London$1,571 AUD

39 data points across 6 retailers

6 retailers$589 AUD to $1,571 AUD

A
Cheapest Retailer
-
$589 AUD
B+
Retailer 2
-
$636 AUD
View
B+
Retailer 3
-
$669 AUD
View
B+
Retailer 4
-
$720 AUD
View
B
Retailer 5
-
$846 AUD
View
Most Expensive
B
MOH London
LG776601800 · Nov 2
$1,571 AUD
£866 GBP
View
5 more retailers have this diamond
Prices start from $589 AUDSave up to $983 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.

A
1.25ct Round
$589 AUD