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Round|Lab Grown|IGI

1.55ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG544272235

Shape and cutting style on the report: Round brilliant

Certificate IGI LG544272235

Diamond specifications and retailer prices

From $239 USD
As of November 5, 2026
Save $943 USD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,182 USD 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 LG544272235 or 544272235. Listed at 14 retailers as of November 5, 2026, with prices from $239 to $1,182, a $943 spread on the same certified stone. MOH London lists it at $1,182. 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 angle35.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG544272235
Dimensions7.42 × 7.37 × 4.55 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 mm7.37 mm1.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG544272235
Side View
Table 58.5%Crown 35.4°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.5%

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 5
Current: $1,182 USD|Low: $239 USD|High: $1,306 USD|Avg: $593 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
November 6, 2026
Retailer 11$239 USD
Retailer 10$277 USD
Retailer 8$296 USD
Retailer 12$296 USD
Retailer 2$458 USD
Retailer 13$472 USD
Retailer 6$480 USD
Retailer 3$499 USD
Retailer 7$553 USD
Retailer 14$624 USD
Retailer 9$951 USD
Retailer 4$955 USD
Retailer 5$1,003 USD
MOH London$1,182 USD

42 data points across 14 retailers

14 retailers$239 USD to $1,182 USD

A
Cheapest Retailer
-
$239 USD
A
Retailer 2
-
$277 USD
View
A
Retailer 3
-
$291 USD
View
Final sale: no returns
A
Retailer 4
-
$296 USD
View
Retailer 5
-
$296 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$458 USD
View
A
Retailer 7
-
$472 USD
View
A
Retailer 8
-
$499 USD
View
A
Retailer 9
-
$553 USD
View
B+
Retailer 10
-
$624 USD
View
B
Retailer 11
-
$951 USD
View
B
Retailer 12
-
$955 USD
View
B
Retailer 13
-
$1,003 USD
View
Most Expensive
B
MOH London
LG544272235 · Nov 5
$1,182 USD
£931 GBP
View
13 more retailers have this diamond
Prices start from $239 USDSave up to $943 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
1.55ct Round
$239 USD