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Oval|Lab Grown|IGI

1.43ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • IGI LG557240888

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG557240888

Diamond specifications and retailer prices

From $437 USD
As of October 30, 2026
Save $748 USD (63%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,185 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.43ct lab-grown oval diamond

This 1.43ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG557240888 or 557240888. Listed at 6 retailers as of October 29, 2026, with prices from $437 to $1,185, a $748 spread on the same certified stone. MOH London lists it at $1,185. 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

1.43
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557240888
Dimensions8.94 × 6.37 × 4.01 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.94 mm6.37 mm1.43 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557240888
Side View
Table 59.0%Crown 34.2°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,185 USD|Low: $412 USD|High: $1,193 USD|Avg: $679 USD|+12.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 4$437 USD
Retailer 2$463 USD
Retailer 6$580 USD
Retailer 5$596 USD
Retailer 3$845 USD
MOH London$1,185 USD

41 data points across 6 retailers

6 retailers$437 USD to $1,185 USD

A
Cheapest Retailer
-
$437 USD
A
Retailer 2
-
$463 USD
£365 GBP
View
B+
Retailer 3
-
$580 USD
View
B+
Retailer 4
-
$596 USD
View
Retailer 5
-
$845 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
LG557240888 · Oct 29
$1,185 USD
£933 GBP
View
5 more retailers have this diamond
Prices start from $437 USDSave up to $748 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
1.43ct Oval
$437 USD