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Oval|Lab Grown|IGI

1.55ct F IF Oval Lab Grown Diamond

ID • F/IF • IGI LG711518321

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG711518321

Diamond specifications and retailer prices

From $475 USD
As of November 4, 2026
Save $2,135 USD (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,610 USD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.55ct lab-grown oval diamond

This 1.55ct lab-grown oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG711518321 or 711518321. Listed at 21 retailers as of November 3, 2026, with prices from $475 to $2,610, a $2,135 spread on the same certified stone. Brilliant Earth lists it at $2,610. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG711518321
Dimensions9.09 × 6.77 × 4.05 mm
L/W Ratio1.34
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
9.09 mm6.77 mm1.55 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG711518321
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 59.8%

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: Nov 4
Current: $2,610 USD|Low: $331 USD|High: $2,620 USD|Avg: $993 USD|-0.4%
Brilliant Earth
Retailer 2
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Retailer 20
November 5, 2026
Retailer 12$331 USD
Retailer 5$352 USD
Retailer 3$364 USD
Retailer 11$427 USD
Retailer 6$475 USD
Retailer 17$510 USD
Retailer 16$568 USD
Retailer 14$607 USD
Retailer 2$616 USD
Retailer 4$690 USD
Retailer 13$826 USD
Retailer 18$848 USD
Retailer 20$1,047 USD
Retailer 7$1,133 USD
Retailer 9$1,183 USD
Retailer 8$1,355 USD
Retailer 10$1,371 USD
Retailer 15$1,412 USD
Retailer 19$2,275 USD
Brilliant Earth$2,610 USD

40 data points across 20 retailers

21 retailers$475 USD to $2,610 USD

Retailer 1
-
$331 USD
Price last confirmed 35 days ago
Retailer 2
-
$352 USD
View
Price last confirmed 11 days ago
Retailer 3
-
$400 USD
View
Price last confirmed 41 days ago
Retailer 4
-
$427 USD
View
Price last confirmed 34 days ago
A
Retailer 5
-
$475 USD
View
A
Retailer 6
-
$510 USD
View
A
Retailer 7
-
$568 USD
View
A
Retailer 8
-
$607 USD
View
A
Retailer 9
-
$616 USD
View
A
Retailer 10
-
$690 USD
View
A
Retailer 11
-
$826 USD
View
A
Retailer 12
-
$848 USD
View
B+
Retailer 13
-
$1,047 USD
View
B+
Retailer 14
-
$1,133 USD
View
B+
Retailer 15
-
$1,183 USD
View
B+
Retailer 16
-
$1,355 USD
View
B+
Retailer 17
-
$1,371 USD
View
Retailer 18
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$1,374 USD
View
Price last confirmed 29 days ago
B+
Retailer 19
-
$1,412 USD
View
Retailer 20
-
$2,275 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
18208194A · Nov 3
$2,610 USD
View
20 more retailers have this diamond
Prices start from $475 USDSave up to $2,135 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
1.55ct Oval
$475 USD