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Radiant|Lab Grown|IGI

1.55ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG783638121

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

Certificate IGI LG783638121

Diamond specifications and retailer prices

From $1,771 CAD
$1,268 USD
As of October 31, 2026
Save $2,308 CAD (57%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,868 CAD at Rare Carat · As of October 18, 2026
View at Rare Carat

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 LG783638121 or 783638121. Listed at 3 retailers as of October 30, 2026, with a 130% 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

1.55
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.2°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783638121
Dimensions7.85 × 5.74 × 4.11 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
7.85 mm5.74 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783638121
Side View
Table 67.0%Crown 43.2°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 71.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $4,868 CAD|Low: $1,274 CAD|High: $7,488 CAD|Avg: $3,722 CAD|+4.7%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 8$1,274 CAD
Retailer 7$1,523 CAD
Retailer 6$1,771 CAD
Retailer 4$2,600 CAD
Retailer 11$2,796 CAD
Retailer 12$2,818 CAD
Retailer 3$2,887 CAD
Retailer 9$3,123 CAD
Retailer 2$4,079 CAD
Rare Carat$4,868 CAD
Retailer 13$5,024 CAD
Retailer 10$6,677 CAD
Retailer 5$7,488 CAD

12 data points across 13 retailers

3 retailers$1,771 CAD to $4,079 CAD

B+
Cheapest Retailer
-
$1,771 CAD
$1,268 USD
B
Retailer 2
-
$4,079 CAD
$2,920 USD
View
Most Expensive
Rare Carat
PD-172705 · Oct 18
$4,868 CAD
$3,485 USD
View
Price last confirmed 12 days ago
2 more retailers have this diamond
Prices start from $1,771 CADSave up to $2,308 CAD

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.

B+
1.55ct Radiant
$1,771 CAD