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Oval|Lab Grown|IGI

1.80ct I SI2 Oval Lab Grown Diamond

ID • I/SI2 • IGI LG451055427

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451055427

Diamond specifications and retailer prices

From $1,757 NZD
$990 USD
As of October 31, 2026
Save $7,099 NZD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,856 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.8ct lab-grown oval diamond

This 1.8ct lab-grown oval 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 LG451055427 or 451055427. Listed at 10 retailers as of October 29, 2026, with prices from $1,757 to $8,856, a $7,099 spread on the same certified stone. MOH London lists it at $8,856. 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

1.80
Carat
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055427
Dimensions9.23 × 6.92 × 4.37 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.23 mm6.92 mm1.80 ctI / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055427
Side View
Table 56.0%Crown 35°Girdle: STK-VTKPavilion 41.1°Culet: NoneDepth 63.2%

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: $8,856 NZD|Low: $1,757 NZD|High: $8,926 NZD|Avg: $4,038 NZD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 4$1,757 NZD
Retailer 2$2,363 NZD
Retailer 8$2,571 NZD
Retailer 9$2,645 NZD
Retailer 5$2,741 NZD
Retailer 11$3,786 NZD
Retailer 6$4,336 NZD
Retailer 10$5,110 NZD
Retailer 7$5,138 NZD
Retailer 3$6,137 NZD
MOH London$8,856 NZD

14 data points across 11 retailers

10 retailers$1,757 NZD to $8,856 NZD

A
Cheapest Retailer
-
$1,757 NZD
$990 USD
B+
Retailer 2
-
$2,363 NZD
$1,332 USD
View
B+
Retailer 3
-
$2,571 NZD
$1,449 USD
View
B+
Retailer 4
-
$2,645 NZD
$1,491 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,741 NZD
$1,545 USD
View
Retailer 6
-
$2,741 NZD
$1,545 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
$4,336 NZD
$2,444 USD
View
B
Retailer 8
-
$5,110 NZD
$2,880 USD
View
B
Retailer 9
-
$5,138 NZD
$2,896 USD
View
Most Expensive
B
MOH London
LG451055427 · Oct 29
$8,856 NZD
£3,930 GBP
View
9 more retailers have this diamond
Prices start from $1,757 NZDSave up to $7,099 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
1.80ct Oval
$1,757 NZD