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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 $1,526 NZD
$860 USD
As of October 31, 2026
Save $6,857 NZD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,383 NZD 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 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 31, 2026, with prices from $1,526 to $8,383, a $6,857 spread on the same certified stone. MOH London lists it at $8,383. 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: $8,383 NZD|Low: $1,526 NZD|High: $8,495 NZD|Avg: $3,815 NZD
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 1, 2026
Retailer 2$1,526 NZD
Retailer 5$2,250 NZD
Retailer 8$2,447 NZD
Retailer 10$2,520 NZD
Retailer 6$2,610 NZD
Retailer 3$3,057 NZD
Retailer 12$3,612 NZD
Retailer 7$4,131 NZD
Retailer 11$4,863 NZD
Retailer 9$4,890 NZD
Retailer 4$5,840 NZD
MOH London$8,383 NZD

15 data points across 12 retailers

10 retailers$1,526 NZD to $8,383 NZD

A
Cheapest Retailer
-
$1,526 NZD
$860 USD
A
Retailer 2
-
$2,250 NZD
$1,268 USD
View
B+
Retailer 3
-
$2,447 NZD
$1,379 USD
View
B+
Retailer 4
-
$2,520 NZD
$1,420 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,610 NZD
$1,471 USD
View
Retailer 6
-
$2,610 NZD
$1,471 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
$4,131 NZD
$2,328 USD
View
B
Retailer 8
-
$4,863 NZD
$2,741 USD
View
B
Retailer 9
-
$4,890 NZD
$2,756 USD
View
Most Expensive
B
MOH London
LG485161772 · Nov 1
$8,383 NZD
£3,720 GBP
View
9 more retailers have this diamond
Prices start from $1,526 NZDSave up to $6,857 NZD

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
$1,526 NZD