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Round|Lab Grown|IGI

1.25ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG738515597

Shape and cutting style on the report: Round brilliant

Certificate IGI LG738515597

Diamond specifications and retailer prices

From $226 AUD
As of November 1, 2026
Save $1,081 AUD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,306 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 LG738515597 or 738515597. Listed at 12 retailers as of November 1, 2026, with prices from $226 to $1,306, a $1,081 spread on the same certified stone. MOH London lists it at $1,306. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG738515597
Dimensions6.92 × 6.87 × 4.21 mm
L/W Ratio1.01
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
6.92 mm6.87 mm1.25 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG738515597
Side View
Table 58.0%Crown 33.6°Girdle: MED-STKPavilion 40.6°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 1
Current: $1,306 AUD|Low: $226 AUD|High: $1,390 AUD|Avg: $590 AUD|-6.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 8$226 AUD
Retailer 9$253 AUD
Retailer 4$289 AUD
Retailer 7$484 AUD
Retailer 6$486 AUD
Retailer 3$507 AUD
Retailer 12$556 AUD
Retailer 10$640 AUD
Retailer 2$650 AUD
Retailer 5$754 AUD
Retailer 11$829 AUD
MOH London$1,306 AUD

36 data points across 12 retailers

12 retailers$226 AUD to $1,306 AUD

A
Cheapest Retailer
-
$226 AUD
A
Retailer 2
-
$253 AUD
View
Final sale: no returns
Retailer 3
-
$289 AUD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$484 AUD
View
A
Retailer 5
-
$486 AUD
View
B+
Retailer 6
-
$507 AUD
View
A
Retailer 7
-
$556 AUD
View
B+
Retailer 8
-
$640 AUD
View
B+
Retailer 9
-
$650 AUD
View
B+
Retailer 10
-
$754 AUD
View
B+
Retailer 11
-
$829 AUD
View
Most Expensive
B
MOH London
LG738515597 · Nov 2
$1,306 AUD
£720 GBP
View
11 more retailers have this diamond
Prices start from $226 AUDSave up to $1,081 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
$226 AUD