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Round|Lab Grown|IGI

1.55ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG485161772

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485161772

Diamond specifications and retailer prices

From $1,224 AUD
$860 USD
As of October 31, 2026
Save $5,510 AUD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,735 AUD at MOH London · As of October 25, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485161772 or 485161772. Listed at 10 retailers as of October 25, 2026, with prices from $1,224 to $6,735, a $5,510 spread on the same certified stone. MOH London lists it at $6,735. 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
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485161772
Dimensions7.40 × 7.37 × 4.55 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.40 mm7.37 mm1.55 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485161772
Side View
Table 59.5%Crown 36.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $6,735 AUD|Low: $1,224 AUD|High: $6,816 AUD|Avg: $3,059 AUD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2$1,224 AUD
Retailer 5$1,805 AUD
Retailer 8$1,963 AUD
Retailer 10$2,022 AUD
Retailer 6$2,094 AUD
Retailer 3$2,453 AUD
Retailer 12$2,898 AUD
Retailer 7$3,314 AUD
Retailer 11$3,902 AUD
Retailer 9$3,923 AUD
Retailer 4$4,686 AUD
MOH London$6,735 AUD

14 data points across 12 retailers

10 retailers$1,224 AUD to $6,735 AUD

A
Cheapest Retailer
-
$1,224 AUD
$860 USD
B+
Retailer 2
-
$1,805 AUD
$1,268 USD
View
B+
Retailer 3
-
$1,963 AUD
$1,379 USD
View
B+
Retailer 4
-
$2,022 AUD
$1,420 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,094 AUD
$1,471 USD
View
Retailer 6
-
$2,094 AUD
$1,471 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
$3,314 AUD
$2,328 USD
View
B
Retailer 8
-
$3,902 AUD
$2,741 USD
View
B
Retailer 9
-
$3,923 AUD
$2,756 USD
View
Most Expensive
B
MOH London
LG485161772 · Oct 25
$6,735 AUD
£3,725 GBP
View
9 more retailers have this diamond
Prices start from $1,224 AUDSave up to $5,510 AUD

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
$1,224 AUD