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Round|Lab Grown|IGI

1.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG804636112

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804636112

Diamond specifications and retailer prices

From $594 AUD
As of October 30, 2026
Save $493 AUD (45%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,499 AUD at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG804636112 or 804636112. Listed at 16 retailers as of October 30, 2026, with a 83% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804636112
Dimensions7.45 × 7.41 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.45 mm7.41 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804636112
Side View
Table 59.0%Crown 33.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.2%

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: Oct 30
Current: $1,499 AUD|Low: $249 AUD|High: $1,515 AUD|Avg: $691 AUD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6$259 AUD
Retailer 7$320 AUD
Retailer 9$320 AUD
Retailer 2$553 AUD
Retailer 8$567 AUD
Retailer 3$576 AUD
Retailer 10$799 AUD
Retailer 4$1,064 AUD
Retailer 5$1,087 AUD
MOH London$1,499 AUD

39 data points across 10 retailers

16 retailers$594 AUD to $1,087 AUD

Retailer 1
-
$259 AUD
Price last confirmed 42 days ago
Retailer 2
-
$259 AUD
View
Price last confirmed 8 days ago
Retailer 3
-
$300 AUD
View
Price last confirmed 45 days ago
Retailer 4
-
$316 AUD
View
Price last confirmed 41 days ago
Retailer 5
-
$320 AUD
View
Price last confirmed 10 days ago
Retailer 6
-
$320 AUD
View
Price last confirmed 12 days ago
Retailer 7
-
$553 AUD
View
Price last confirmed 7 days ago
Retailer 8
-
$567 AUD
View
Price last confirmed 9 days ago
Retailer 9
-
$576 AUD
View
Price last confirmed 7 days ago
A
Retailer 10
-
$594 AUD
View
B+
Retailer 11
-
$799 AUD
View
Retailer 12
-
$1,030 AUD
View
Price last confirmed 46 days ago
Retailer 13
-
$1,030 AUD
View
Price last confirmed 10 days ago
Retailer 14
-
$1,064 AUD
View
Price last confirmed 16 days ago
B
Retailer 15
-
$1,087 AUD
View
Most Expensive
MOH London
LG804636112 · Oct 26
$1,499 AUD
£826 GBP
View
Price last confirmed 10 days ago
15 more retailers have this diamond
Prices start from $594 AUDSave up to $493 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
1.51ct Round
$594 AUD