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Oval|Lab Grown|IGI

1.55ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG818630035

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818630035

Diamond specifications and retailer prices

From $279 USD
As of October 26, 2026
Save $4,651 USD (94%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,930 USD at Brilliant Earth · As of October 28, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818630035 or 818630035. Listed at 23 retailers as of October 26, 2026, with prices from $279 to $4,930, a $4,651 spread on the same certified stone. Brilliant Earth lists it at $4,930. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818630035
Dimensions9.61 × 6.55 × 3.98 mm
L/W Ratio1.47
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
9.61 mm6.55 mm1.55 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818630035
Side View
Table 60.0%Crown 33.5°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 60.8%

Caratlytics Score

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A+
Exceptional
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 26
Current: $407 USD|Low: $312 USD|High: $2,480 USD|Avg: $1,168 USD|-0.6%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
October 29, 2026
Retailer 7$312 USD
Retailer 1$407 USD
Retailer 14$505 USD
Retailer 8$573 USD
Retailer 12$657 USD
Retailer 13$678 USD
Retailer 10$701 USD
Retailer 5$824 USD
Retailer 11$892 USD
Retailer 16$961 USD
Retailer 2$1,332 USD
Retailer 6$1,393 USD
Retailer 3$1,430 USD
Retailer 4$1,494 USD
Retailer 15$1,534 USD
Retailer 9$1,931 USD
Retailer 17$2,395 USD
Retailer 18$2,480 USD

38 data points across 18 retailers

23 retailers$279 USD to $4,930 USD

A+
Cheapest Retailer
-
$279 USD
A
Retailer 2
-
$312 USD
View
Final sale: no returns
A
Retailer 3
-
$324 USD
View
A
Retailer 4
-
$347 USD
View
A
Retailer 5
-
$407 USD
£320 GBP
View
A
Retailer 6
-
$505 USD
View
A
Retailer 7
-
$573 USD
View
A
Retailer 8
-
$657 USD
ZAR 10,617 ZAR
View
A
Retailer 9
-
$678 USD
£534 GBP
View
A
Retailer 10
-
$701 USD
A$1,078 AUD
View
A
Retailer 11
-
$824 USD
View
A
Retailer 12
-
$892 USD
A$1,372 AUD
View
B+
Retailer 13
-
$961 USD
View
B+
Retailer 14
-
$1,230 USD
View
B+
Retailer 15
-
$1,332 USD
View
B+
Retailer 16
-
$1,393 USD
View
B+
Retailer 17
-
$1,430 USD
SGD 1,933 SGD
View
B+
Retailer 18
-
$1,494 USD
£1,176 GBP
View
B+
Retailer 19
-
$1,534 USD
£1,208 GBP
View
B+
Retailer 20
-
$1,931 USD
A$2,970 AUD
View
Price last confirmed 20 days ago
B+
Retailer 21
-
$2,395 USD
View
Price last confirmed 7 days ago
B
Retailer 22
-
$2,480 USD
View
Most Expensive
B
Brilliant Earth
22138336Y · Oct 28
$4,930 USD
View
22 more retailers have this diamond
Prices start from $279 USDSave up to $4,651 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
$279 USD