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Oval|Lab Grown|IGI

1.51ct D FL Oval Lab Grown Diamond

EX • D/FL • IGI LG791635158

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG791635158

Diamond specifications and retailer prices

From $439 USD
As of October 29, 2026
Save $3,870 USD (90%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $5,280 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG791635158 or 791635158. Listed at 28 retailers as of October 29, 2026, with a 882% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG791635158
Dimensions9.45 × 6.38 × 3.96 mm
L/W Ratio1.48
Girdle conditionFaceted
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
9.45 mm6.38 mm1.51 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG791635158
Side View
Table 59.0%Crown 33.7°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

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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 29
Current: $5,280 USD|Low: $350 USD|High: $5,280 USD|Avg: $1,380 USD
Brilliant Earth
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
Retailer 15
October 30, 2026
Retailer 6$491 USD
Retailer 4$623 USD
Retailer 10$690 USD
Retailer 14$805 USD
Retailer 12$873 USD
Retailer 8$917 USD
Retailer 15$922 USD
Retailer 13$966 USD
Retailer 2$998 USD
Retailer 9$1,032 USD
Retailer 7$1,329 USD
Retailer 3$1,583 USD
Retailer 5$2,227 USD
Retailer 11$2,511 USD
Brilliant Earth$5,280 USD

43 data points across 15 retailers

28 retailers$439 USD to $4,309 USD

A
Cheapest Retailer
-
$439 USD
A
Retailer 2
-
$491 USD
View
Final sale: no returns
A
Retailer 3
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$491 USD
View
A
Retailer 4
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$544 USD
View
A
Retailer 5
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$544 USD
View
A
Retailer 6
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$623 USD
View
A
Retailer 7
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$690 USD
View
A
Retailer 8
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$805 USD
View
A
Retailer 9
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$819 USD
View
A
Retailer 10
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$825 USD
View
A
Retailer 11
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$877 USD
View
A
Retailer 12
-
$922 USD
A$1,418 AUD
View
B+
Retailer 13
-
$966 USD
View
A
Retailer 14
-
$998 USD
£786 GBP
View
B+
Retailer 15
-
$1,032 USD
ZAR 16,675 ZAR
View
B+
Retailer 16
-
$1,329 USD
View
B+
Retailer 17
-
$1,583 USD
View
B
Retailer 18
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$1,674 USD
CA$2,325 CAD
View
B
Retailer 19
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$1,931 USD
View
B
Retailer 20
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$1,945 USD
View
B
Retailer 21
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$2,074 USD
View
B
Retailer 22
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$2,076 USD
View
B
Retailer 23
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$2,322 USD
View
B
Retailer 24
-
$2,511 USD
£1,977 GBP
View
B
Retailer 25
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$3,350 USD
View
B
Retailer 26
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$3,900 USD
View
B
Retailer 27
-
$4,309 USD
View
Most Expensive
Brilliant Earth
20488162Y · Oct 29
$5,280 USD
View
Price under review
27 more retailers have this diamond
Prices start from $439 USDSave up to $3,870 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
1.51ct Oval
$439 USD