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Round|Lab Grown|IGI

1.78ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG645443632

Shape and cutting style on the report: Round brilliant

Certificate IGI LG645443632

Diamond specifications and retailer prices

From $326 SGD
$254 USD
As of October 28, 2026
Save $1,088 SGD (77%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,413 SGD at MOH London · As of October 26, 2026
View at MOH London

About this 1.78ct lab-grown round diamond

This 1.78ct 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 LG645443632 or 645443632. Listed at 12 retailers as of October 26, 2026, with prices from $326 to $1,413, a $1,088 spread on the same certified stone. MOH London lists it at $1,413. 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

1.78
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645443632
Dimensions7.81 × 7.76 × 4.77 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
7.81 mm7.76 mm1.78 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645443632
Side View
Table 58.0%Crown 33.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.4%

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 28
Current: $1,413 SGD|Low: $233 SGD|High: $1,462 SGD|Avg: $742 SGD|-2.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 28, 2026
Retailer 8$326 SGD
Retailer 9$356 SGD
Retailer 6$464 SGD
Retailer 2$650 SGD
Retailer 10$684 SGD
Retailer 4$691 SGD
Retailer 5$722 SGD
Retailer 7$1,096 SGD
Retailer 3$1,136 SGD
MOH London$1,413 SGD

36 data points across 10 retailers

12 retailers$326 SGD to $1,413 SGD

A
Retailer 1
-
$291 SGD
$227 USD
Price last confirmed 30 days ago
A
Retailer 2
-
$326 SGD
$254 USD
View
Final sale: no returns
A
Retailer 3
-
$337 SGD
$263 USD
View
Price last confirmed 37 days ago
A
Retailer 4
-
$356 SGD
$278 USD
View
Price last confirmed 30 days ago
B+
Retailer 5
-
$464 SGD
$362 USD
View
A
Retailer 6
-
$650 SGD
£399 GBP
View
A
Retailer 7
-
$691 SGD
$539 USD
View
A
Retailer 8
-
$722 SGD
$563 USD
View
B+
Retailer 9
-
$1,096 SGD
$855 USD
View
B
Retailer 10
-
$1,136 SGD
$886 USD
View
B
Retailer 11
-
$1,159 SGD
$904 USD
View
Price last confirmed 28 days ago
Most Expensive
B
MOH London
LG645443632 · Oct 26
$1,413 SGD
£868 GBP
View
11 more retailers have this diamond
Prices start from $326 SGDSave up to $1,088 SGD

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
1.78ct Round
$326 SGD