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Round|Lab Grown|IGI

1.55ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG787638566

Shape and cutting style on the report: Round brilliant

Certificate IGI LG787638566

Diamond specifications and retailer prices

From $531 USD
As of October 29, 2026
Save $4,029 USD (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,560 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG787638566 or 787638566. Listed at 23 retailers as of October 29, 2026, with prices from $531 to $4,560, a $4,029 spread on the same certified stone. Brilliant Earth lists it at $4,560. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787638566
Dimensions7.47 × 7.42 × 4.60 mm
L/W Ratio1.01
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
7.47 mm7.42 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787638566
Side View
Table 55.0%Crown 34.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.8%

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: Oct 29
Current: $4,560 USD|Low: $510 USD|High: $4,700 USD|Avg: $1,493 USD|-3.0%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 19$531 USD
Retailer 11$594 USD
Retailer 9$595 USD
Retailer 4$658 USD
Retailer 16$717 USD
Retailer 15$795 USD
Retailer 8$879 USD
Retailer 3$922 USD
Retailer 12$988 USD
Retailer 2$1,018 USD
Retailer 6$1,019 USD
Retailer 14$1,132 USD
Retailer 18$1,479 USD
Retailer 10$1,732 USD
Retailer 7$2,082 USD
Retailer 5$2,441 USD
Retailer 17$2,705 USD
Retailer 13$2,764 USD
Brilliant Earth$4,560 USD

44 data points across 19 retailers

23 retailers$531 USD to $4,560 USD

A
Cheapest Retailer
-
$531 USD
A
Retailer 2
-
$594 USD
View
Final sale: no returns
A
Retailer 3
-
$595 USD
View
Retailer 4
-
$658 USD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$658 USD
View
A
Retailer 6
-
$717 USD
HK$5,600 HKD
View
A
Retailer 7
-
$795 USD
View
A
Retailer 8
-
$879 USD
View
A
Retailer 9
-
$922 USD
A$1,418 AUD
View
A
Retailer 10
-
$988 USD
€941 EUR
View
A
Retailer 11
-
$993 USD
View
B+
Retailer 12
-
$1,018 USD
£802 GBP
View
A
Retailer 13
-
$1,019 USD
View
B+
Retailer 14
-
$1,132 USD
ZAR 18,282 ZAR
View
B+
Retailer 15
-
$1,479 USD
View
B+
Retailer 16
-
$1,732 USD
View
B
Retailer 17
-
$2,082 USD
SGD 2,813 SGD
View
B
Retailer 18
-
$2,139 USD
View
B
Retailer 19
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$2,250 USD
View
B
Retailer 20
-
$2,441 USD
View
Retailer 21
-
$2,705 USD
View
Price last confirmed 10 days ago
B
Retailer 22
-
$2,764 USD
£2,176 GBP
View
Most Expensive
B
Brilliant Earth
20914830A · Oct 31
$4,560 USD
View
22 more retailers have this diamond
Prices start from $531 USDSave up to $4,029 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 Round
$531 USD