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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 $351 SGD
As of November 6, 2026
Save $1,052 SGD (75%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,403 SGD 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 $351 to $1,403, a $1,052 spread on the same certified stone. MOH London lists it at $1,403. 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
Colour
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: $1,403 SGD|Low: $284 SGD|High: $1,423 SGD|Avg: $746 SGD|-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$284 SGD
Retailer 3$351 SGD
Retailer 10$351 SGD
Retailer 12$473 SGD
Retailer 2$577 SGD
Retailer 5$645 SGD
Retailer 4$677 SGD
Retailer 9$711 SGD
Retailer 7$971 SGD
Retailer 8$1,132 SGD
Retailer 6$1,354 SGD
MOH London$1,403 SGD

43 data points across 12 retailers

19 retailers$351 SGD to $1,403 SGD

Retailer 1
-
$284 SGD
Price last confirmed 27 days ago
Retailer 2
-
$328 SGD
View
Price last confirmed 24 days ago
Retailer 3
-
$351 SGD
View
Price last confirmed 12 days ago
Retailer 4
-
$351 SGD
View
Price last confirmed 35 days ago
A
Retailer 5
-
$351 SGD
View
B+
Retailer 6
-
$473 SGD
View
A
Retailer 7
-
$577 SGD
View
A
Retailer 8
-
$594 SGD
View
A
Retailer 9
-
$645 SGD
View
A
Retailer 10
-
$677 SGD
View
B+
Retailer 11
-
$711 SGD
View
B+
Retailer 12
-
$927 SGD
View
B+
Retailer 13
-
$971 SGD
View
Retailer 14
-
$1,128 SGD
View
Price last confirmed 30 days ago
B
Retailer 15
-
$1,132 SGD
View
B
Retailer 16
-
$1,136 SGD
View
B
Retailer 17
-
$1,341 SGD
View
B
Retailer 18
-
$1,354 SGD
View
Most Expensive
B
MOH London
LG783641986 · Nov 5
$1,403 SGD
£865 GBP
View
18 more retailers have this diamond
Prices start from $351 SGDSave up to $1,052 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
1.55ct Round
$351 SGD