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Oval|Lab Grown|IGI

1.80ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG450028024

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG450028024

Diamond specifications and retailer prices

From $1,757 NZD
$990 USD
As of October 31, 2026
Save $7,352 NZD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,108 NZD at MOH London · As of November 1, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG450028024 or 450028024. Listed at 12 retailers as of October 31, 2026, with prices from $1,757 to $9,108, a $7,352 spread on the same certified stone. MOH London lists it at $9,108. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG450028024
Dimensions9.20 × 6.81 × 4.47 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD). Type IIa
Top View
9.20 mm6.81 mm1.80 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG450028024
Side View
Table 55.5%Crown 37.3°Girdle: STK-THKPavilion 41.5°Culet: NoneDepth 65.6%

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: $9,108 NZD|Low: $1,757 NZD|High: $9,216 NZD|Avg: $4,592 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
Retailer 13
Retailer 14
November 1, 2026
Retailer 9$1,757 NZD
Retailer 8$2,748 NZD
Retailer 13$2,991 NZD
Retailer 14$3,078 NZD
Retailer 3$3,188 NZD
Retailer 10$3,188 NZD
Retailer 4$3,495 NZD
Retailer 5$4,319 NZD
Retailer 2$4,553 NZD
Retailer 11$5,018 NZD
Retailer 7$5,639 NZD
Retailer 12$5,978 NZD
MOH London$9,108 NZD
Retailer 6$9,131 NZD

38 data points across 14 retailers

12 retailers$1,757 NZD to $9,108 NZD

A
Cheapest Retailer
-
$1,757 NZD
$990 USD
B+
Retailer 2
-
$2,748 NZD
$1,549 USD
View
B+
Retailer 3
-
$2,991 NZD
$1,686 USD
View
B+
Retailer 4
-
$3,078 NZD
$1,735 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,188 NZD
$1,797 USD
View
Retailer 6
-
$3,188 NZD
$1,797 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
$3,495 NZD
$1,970 USD
View
B
Retailer 8
-
$4,553 NZD
£2,021 GBP
View
B
Retailer 9
-
$5,018 NZD
$2,828 USD
View
B
Retailer 10
-
$5,639 NZD
$3,178 USD
View
B
Retailer 11
-
$5,978 NZD
$3,369 USD
View
Most Expensive
B
MOH London
LG450028024 · Nov 1
$9,108 NZD
£4,042 GBP
View
11 more retailers have this diamond
Prices start from $1,757 NZDSave up to $7,352 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