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Round|Lab Grown|IGI

1.55ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG783641986

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783641986

Diamond specifications and retailer prices

From $384 CAD
As of November 6, 2026
Save $1,150 CAD (75%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,534 CAD at MOH London · As of November 5, 2026
View at MOH London

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG783641986 or 783641986. Listed at 19 retailers as of November 5, 2026, with prices from $384 to $1,534, a $1,150 spread on the same certified stone. MOH London lists it at $1,534. 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

1.55
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783641986
Dimensions7.42 × 7.38 × 4.59 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
7.42 mm7.38 mm1.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783641986
Side View
Table 57.0%Crown 34.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.1%

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: Nov 6
Current: $1,534 CAD|Low: $310 CAD|High: $1,556 CAD|Avg: $816 CAD|-0.2%
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 6, 2026
Retailer 11$310 CAD
Retailer 3$384 CAD
Retailer 10$384 CAD
Retailer 12$517 CAD
Retailer 2$631 CAD
Retailer 5$705 CAD
Retailer 4$740 CAD
Retailer 9$778 CAD
Retailer 7$1,061 CAD
Retailer 8$1,237 CAD
Retailer 6$1,480 CAD
MOH London$1,534 CAD

43 data points across 12 retailers

19 retailers$384 CAD to $1,534 CAD

Retailer 1
-
$310 CAD
Price last confirmed 27 days ago
Retailer 2
-
$359 CAD
View
Price last confirmed 24 days ago
Retailer 3
-
$384 CAD
View
Price last confirmed 12 days ago
Retailer 4
-
$384 CAD
View
Price last confirmed 35 days ago
A
Retailer 5
-
$384 CAD
View
B+
Retailer 6
-
$517 CAD
View
A
Retailer 7
-
$631 CAD
View
A
Retailer 8
-
$649 CAD
View
A
Retailer 9
-
$705 CAD
View
A
Retailer 10
-
$740 CAD
View
B+
Retailer 11
-
$778 CAD
View
B+
Retailer 12
-
$1,014 CAD
View
B+
Retailer 13
-
$1,061 CAD
View
Retailer 14
-
$1,233 CAD
View
Price last confirmed 30 days ago
B
Retailer 15
-
$1,237 CAD
View
B
Retailer 16
-
$1,242 CAD
View
B
Retailer 17
-
$1,466 CAD
View
B
Retailer 18
-
$1,480 CAD
View
Most Expensive
B
MOH London
LG783641986 · Nov 5
$1,534 CAD
£865 GBP
View
18 more retailers have this diamond
Prices start from $384 CADSave up to $1,150 CAD

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
1.55ct Round
$384 CAD