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Round|Lab Grown|IGI

1.55ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG816613920

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816613920

Diamond specifications and retailer prices

From $245 SGD
$192 USD
As of November 1, 2026
Save $1,177 SGD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,422 SGD at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816613920 or 816613920. Listed at 15 retailers as of November 1, 2026, with prices from $245 to $1,422, a $1,177 spread on the same certified stone. MOH London lists it at $1,422. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816613920
Dimensions7.46 × 7.40 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.46 mm7.40 mm1.55 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816613920
Side View
Table 55.0%Crown 34.8°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.6%

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 1
Current: $1,422 SGD|Low: $245 SGD|High: $1,438 SGD|Avg: $701 SGD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$245 SGD
Retailer 9$304 SGD
Retailer 4$510 SGD
Retailer 10$531 SGD
Retailer 3$542 SGD
Retailer 2$552 SGD
Retailer 6$772 SGD
Retailer 5$908 SGD
Retailer 8$1,125 SGD
MOH London$1,422 SGD

44 data points across 10 retailers

15 retailers$245 SGD to $1,422 SGD

A
Cheapest Retailer
-
$245 SGD
$192 USD
A
Retailer 2
-
$285 SGD
$223 USD
View
Retailer 3
-
$304 SGD
$238 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$304 SGD
$238 USD
View
A
Retailer 5
-
$510 SGD
€380 EUR
View
B+
Retailer 6
-
$531 SGD
$415 USD
View
A
Retailer 7
-
$542 SGD
£334 GBP
View
A
Retailer 8
-
$552 SGD
£340 GBP
View
A
Retailer 9
-
$605 SGD
$473 USD
View
B+
Retailer 10
-
$772 SGD
$604 USD
View
B+
Retailer 11
-
$908 SGD
$710 USD
View
B
Retailer 12
-
$978 SGD
$765 USD
View
B+
Retailer 13
-
$1,046 SGD
$818 USD
View
B
Retailer 14
-
$1,125 SGD
$880 USD
View
Most Expensive
B
MOH London
LG816613920 · Nov 1
$1,422 SGD
£876 GBP
View
14 more retailers have this diamond
Prices start from $245 SGDSave up to $1,177 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
$245 SGD