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Oval|Lab Grown|IGI

1.80ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG451057750

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057750

Diamond specifications and retailer prices

From $1,409 AUD
$990 USD
As of October 31, 2026
Save $5,907 AUD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,317 AUD at MOH London · As of October 27, 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 LG451057750 or 451057750. Listed at 12 retailers as of October 27, 2026, with prices from $1,409 to $7,317, a $5,907 spread on the same certified stone. MOH London lists it at $7,317. 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 angle36.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057750
Dimensions9.27 × 6.98 × 4.40 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.27 mm6.98 mm1.80 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057750
Side View
Table 58.0%Crown 36.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 63.0%

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: $7,317 AUD|Low: $1,409 AUD|High: $7,405 AUD|Avg: $3,684 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
Retailer 13
Retailer 14
October 30, 2026
Retailer 9$1,409 AUD
Retailer 8$2,205 AUD
Retailer 13$2,400 AUD
Retailer 14$2,470 AUD
Retailer 3$2,558 AUD
Retailer 10$2,558 AUD
Retailer 4$2,804 AUD
Retailer 5$3,465 AUD
Retailer 2$3,664 AUD
Retailer 11$4,026 AUD
Retailer 7$4,524 AUD
Retailer 12$4,796 AUD
MOH London$7,317 AUD
Retailer 6$7,326 AUD

36 data points across 14 retailers

12 retailers$1,409 AUD to $7,317 AUD

A
Cheapest Retailer
-
$1,409 AUD
$990 USD
B+
Retailer 2
-
$2,205 AUD
$1,549 USD
View
B+
Retailer 3
-
$2,400 AUD
$1,686 USD
View
B+
Retailer 4
-
$2,470 AUD
$1,735 USD
View
Final sale: no returns
Retailer 5
-
$2,558 AUD
$1,797 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$2,558 AUD
$1,797 USD
View
B+
Retailer 7
-
$2,804 AUD
$1,970 USD
View
B+
Retailer 8
-
$3,664 AUD
£2,027 GBP
View
B
Retailer 9
-
$4,026 AUD
$2,828 USD
View
B
Retailer 10
-
$4,524 AUD
$3,178 USD
View
B
Retailer 11
-
$4,796 AUD
$3,369 USD
View
Most Expensive
B
MOH London
LG451057750 · Oct 27
$7,317 AUD
£4,047 GBP
View
11 more retailers have this diamond
Prices start from $1,409 AUDSave up to $5,907 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
1.80ct Oval
$1,409 AUD