Radiant|Lab Grown|IGI

1.55ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG754517897

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG754517897

Diamond specifications and retailer prices

From $396 USD
As of October 30, 2026
Save $3,494 USD (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,890 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant 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 LG754517897 or 754517897. Listed at 11 retailers as of October 29, 2026, with prices from $396 to $3,890, a $3,494 spread on the same certified stone. Brilliant Earth lists it at $3,890. 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 angle47.5°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754517897
Dimensions7.78 × 5.67 × 3.92 mm
L/W Ratio1.37
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
7.78 mm5.67 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754517897
Side View
Table 65.0%Crown 47.5°Girdle: MED-STKPavilion 36.1°Culet: NoneDepth 69.1%

Caratlytics Score

How it works →
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 30
Current: $3,890 USD|Low: $396 USD|High: $4,550 USD|Avg: $2,107 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
October 28, 2026
Retailer 9$396 USD
Retailer 15$444 USD
Retailer 3$574 USD
Retailer 13$779 USD
Retailer 2$790 USD
Retailer 12$1,310 USD
Retailer 16$1,734 USD
Retailer 14$1,744 USD
Retailer 8$1,861 USD
Retailer 10$1,995 USD
Retailer 4$2,001 USD
Retailer 5$2,017 USD
Retailer 7$2,066 USD
Retailer 11$3,520 USD
Retailer 6$3,597 USD
Brilliant Earth$3,890 USD

26 data points across 16 retailers

11 retailers$396 USD to $3,890 USD

A
Cheapest Retailer
-
$396 USD
A
Retailer 2
-
$444 USD
View
A
Retailer 3
-
$574 USD
View
Final sale: no returns
A
Retailer 4
-
$779 USD
View
A
Retailer 5
-
$790 USD
View
B+
Retailer 6
-
$1,310 USD
View
B+
Retailer 7
-
$1,734 USD
View
B+
Retailer 8
-
$1,744 USD
View
B+
Retailer 9
-
$1,995 USD
£1,571 GBP
View
B
Retailer 10
-
$3,520 USD
View
Most Expensive
B
Brilliant Earth
21410934Y · Oct 29
$3,890 USD
View
10 more retailers have this diamond
Prices start from $396 USDSave up to $3,494 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 Radiant
$396 USD