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Round|Lab Grown|IGI

1.50ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG788681343

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788681343

Diamond specifications and retailer prices

From $307 AUD
$216 USD
As of October 27, 2026
Save $931 AUD (75%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,603 AUD at MOH London · As of October 19, 2026
View at MOH London

About this 1.5ct lab-grown round diamond

This 1.5ct 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 LG788681343 or 788681343. Listed at 18 retailers as of October 27, 2026, with a 303% 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

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788681343
Dimensions7.32 × 7.25 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.32 mm7.25 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788681343
Side View
Table 55.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.0%

Caratlytics Score

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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 27
Current: $1,603 AUD|Low: $307 AUD|High: $1,708 AUD|Avg: $808 AUD|+9.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 13$307 AUD
Retailer 12$383 AUD
Retailer 2$554 AUD
Retailer 9$591 AUD
Retailer 4$596 AUD
Retailer 11$611 AUD
Retailer 10$617 AUD
Retailer 5$707 AUD
Retailer 3$775 AUD
Retailer 14$877 AUD
Retailer 7$1,039 AUD
Retailer 8$1,101 AUD
Retailer 6$1,238 AUD
MOH London$1,603 AUD

42 data points across 14 retailers

18 retailers$307 AUD to $1,238 AUD

Retailer 1
-
$292 AUD
$205 USD
Price last confirmed 19 days ago
A
Retailer 2
-
$307 AUD
$216 USD
View
Final sale: no returns
Retailer 3
-
$337 AUD
$237 USD
View
Price last confirmed 16 days ago
Retailer 4
-
$362 AUD
$254 USD
View
Price last confirmed 27 days ago
A
Retailer 5
-
$383 AUD
HK$2,100 HKD
View
A
Retailer 6
-
$554 AUD
€371 EUR
View
A
Retailer 7
-
$591 AUD
£327 GBP
View
B+
Retailer 8
-
$596 AUD
$419 USD
View
A
Retailer 9
-
$611 AUD
$429 USD
View
A
Retailer 10
-
$617 AUD
£341 GBP
View
A
Retailer 11
-
$707 AUD
$497 USD
View
B+
Retailer 12
-
$775 AUD
View
B+
Retailer 13
-
$877 AUD
$616 USD
View
B+
Retailer 14
-
$1,039 AUD
$730 USD
View
B+
Retailer 15
-
$1,101 AUD
SGD 1,045 SGD
View
Retailer 16
-
$1,161 AUD
$816 USD
View
Price last confirmed 22 days ago
B
Retailer 17
-
$1,238 AUD
$870 USD
View
Most Expensive
MOH London
LG788681343 · Oct 19
$1,603 AUD
£887 GBP
View
Price last confirmed 11 days ago
17 more retailers have this diamond
Prices start from $307 AUDSave up to $931 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
1.50ct Round
$307 AUD