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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 $216 USD
As of October 27, 2026
Save $654 USD (75%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,126 USD 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
Color
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

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 27
Current: $1,126 USD|Low: $216 USD|High: $1,200 USD|Avg: $568 USD|+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$216 USD
Retailer 12$269 USD
Retailer 2$390 USD
Retailer 9$415 USD
Retailer 4$419 USD
Retailer 11$429 USD
Retailer 10$433 USD
Retailer 5$497 USD
Retailer 3$545 USD
Retailer 14$616 USD
Retailer 7$730 USD
Retailer 8$773 USD
Retailer 6$870 USD
MOH London$1,126 USD

42 data points across 14 retailers

18 retailers$216 USD to $870 USD

A
Retailer 1
-
$205 USD
Price last confirmed 19 days ago
A
Retailer 2
-
$216 USD
View
Final sale: no returns
A
Retailer 3
-
$237 USD
View
Price last confirmed 16 days ago
A
Retailer 4
-
$254 USD
View
Price last confirmed 27 days ago
A
Retailer 5
-
$269 USD
HK$2,100 HKD
View
A
Retailer 6
-
$390 USD
€371 EUR
View
A
Retailer 7
-
$415 USD
£327 GBP
View
B+
Retailer 8
-
$419 USD
View
A
Retailer 9
-
$429 USD
View
A
Retailer 10
-
$433 USD
£341 GBP
View
A
Retailer 11
-
$497 USD
View
B+
Retailer 12
-
$545 USD
A$838 AUD
View
B+
Retailer 13
-
$616 USD
View
B+
Retailer 14
-
$730 USD
View
B+
Retailer 15
-
$773 USD
SGD 1,045 SGD
View
B
Retailer 16
-
$816 USD
View
Price last confirmed 22 days ago
B
Retailer 17
-
$870 USD
View
Most Expensive
B
MOH London
LG788681343 · Oct 19
$1,126 USD
£887 GBP
View
Price last confirmed 10 days ago
17 more retailers have this diamond
Prices start from $216 USDSave up to $654 USD

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
$216 USD