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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 $990 USD
As of October 29, 2026
Save $4,150 USD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,140 USD 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 $990 to $5,140, a $4,150 spread on the same certified stone. MOH London lists it at $5,140. 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
Color
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 29
Current: $5,140 USD|Low: $990 USD|High: $5,202 USD|Avg: $2,585 USD|+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$990 USD
Retailer 8$1,549 USD
Retailer 13$1,686 USD
Retailer 14$1,735 USD
Retailer 3$1,797 USD
Retailer 10$1,797 USD
Retailer 4$1,970 USD
Retailer 5$2,434 USD
Retailer 2$2,574 USD
Retailer 11$2,828 USD
Retailer 7$3,178 USD
Retailer 12$3,369 USD
MOH London$5,140 USD
Retailer 6$5,146 USD

37 data points across 14 retailers

12 retailers$990 USD to $5,140 USD

A
Cheapest Retailer
-
$990 USD
B+
Retailer 2
-
$1,549 USD
View
B+
Retailer 3
-
$1,686 USD
View
B+
Retailer 4
-
$1,735 USD
View
Final sale: no returns
Retailer 5
-
$1,797 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,797 USD
View
B+
Retailer 7
-
$1,970 USD
View
B+
Retailer 8
-
$2,574 USD
£2,027 GBP
View
B
Retailer 9
-
$2,828 USD
View
B
Retailer 10
-
$3,178 USD
View
B
Retailer 11
-
$3,369 USD
View
Most Expensive
B
MOH London
LG451057750 · Oct 27
$5,140 USD
£4,047 GBP
View
11 more retailers have this diamond
Prices start from $990 USDSave up to $4,150 USD

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
$990 USD