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Oval|Lab Grown|IGI

1.31ct E IF Oval Lab Grown Diamond

ID • E/IF • IGI LG728540143

Certificate IGI LG728540143

Diamond specifications and retailer prices

From $285 USD
Save $2,435 USD (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,720 USD at Brilliant Earth
View at Brilliant Earth

About this 1.31ct lab-grown oval diamond

This 1.31ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG728540143 or 728540143. Listed at 23 retailers, with prices from $285 to $2,720 at Brilliant Earth, a $2,435 spread on the same certified stone. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728540143
Dimensions8.77 × 6.22 × 3.79 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.77 mm6.22 mm1.31 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728540143
Side View
Table 61.0%Crown 34.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.9%

Caratlytics Score

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

Price History

Last verified: Sep 28
Current: $2,720 USD|Low: $211 USD|High: $2,920 USD|Avg: $890 USD|-6.8%
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 7
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Retailer 11
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Retailer 13
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Retailer 18
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Retailer 20
Retailer 21
September 29, 2026
Retailer 14$211 USD
Retailer 5$319 USD
Retailer 4$349 USD
Retailer 10$354 USD
Retailer 7$475 USD
Retailer 21$535 USD
Retailer 19$566 USD
Retailer 17$600 USD
Retailer 20$606 USD
Retailer 2$617 USD
Retailer 12$668 USD
Retailer 16$859 USD
Retailer 11$917 USD
Retailer 3$924 USD
Retailer 6$992 USD
Retailer 9$1,186 USD
Retailer 13$1,316 USD
Retailer 18$1,431 USD
Retailer 8$1,465 USD
Retailer 15$1,960 USD
Brilliant Earth$2,720 USD

37 data points across 21 retailers

23 retailers$285 USD to $2,720 USD

A
Cheapest Retailer
-
$285 USD
A
Retailer 2
-
$319 USD
View
A
Retailer 3
-
$331 USD
View
A
Retailer 4
-
$349 USD
View
A
Retailer 5
-
$354 USD
View
A
Retailer 6
-
$475 USD
View
A
Retailer 7
-
$535 USD
View
A
Retailer 8
-
$566 USD
€539 EUR
View
A
Retailer 9
-
$600 USD
ZAR 9,698 ZAR
View
A
Retailer 10
-
$606 USD
View
A
Retailer 11
-
$618 USD
£487 GBP
View
A
Retailer 12
-
$668 USD
A$1,028 AUD
View
B+
Retailer 13
-
$859 USD
A$1,321 AUD
View
B+
Retailer 14
-
$917 USD
View
B+
Retailer 15
-
$943 USD
View
B+
Retailer 16
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$992 USD
View
B+
Retailer 17
-
$1,136 USD
View
B+
Retailer 18
-
$1,186 USD
View
B
Retailer 19
-
$1,316 USD
A$2,024 AUD
View
B
Retailer 20
-
$1,431 USD
£1,127 GBP
View
B
Retailer 21
-
$1,465 USD
View
B
Retailer 22
-
$1,960 USD
View
Most Expensive
B
Brilliant Earth
15548884A · Oct 1
$2,720 USD
View
22 more retailers have this diamond
Prices start from $285 USDSave up to $2,435 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.

A
1.31ct Oval
$285 USD