Radiant|Lab Grown|IGI

1.39ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG821689054

Certificate IGI LG821689054

Diamond specifications and retailer prices

From $1,420 USD
As of October 28, 2026
Save $1,560 USD (52%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,980 USD at Zales · As of October 30, 2026
View at Zales

About this 1.39ct lab-grown radiant diamond

This 1.39ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821689054 or 821689054. Listed at 4 retailers as of October 28, 2026, with prices from $1,420 to $2,980, a $1,560 spread on the same certified stone. Zales lists it at $2,980. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.39
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG821689054
Dimensions7.91 × 5.59 × 3.69 mm
L/W Ratio1.42
Top View
7.91 mm5.59 mm1.39 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821689054
Side View
Table 60.0%CrownGirdle: MediumPavilionCulet: NoneDepth 66.0%

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 28
Current: $1,420 USD|Low: $1,420 USD|High: $2,980 USD|Avg: $2,426 USD
Retailer 1
Retailer 2
Retailer 3
Zales
October 1, 2026
Retailer 1$1,420 USD
Retailer 2$2,174 USD
Retailer 3$2,980 USD
Zales$2,980 USD

4 data points across 4 retailers

4 retailers$1,420 USD to $2,980 USD

B+
Cheapest Retailer
-
$1,420 USD
B
Retailer 2
-
$2,174 USD
View
B
Retailer 3
-
$2,980 USD
View
Most Expensive
B
Zales
529167858 · Oct 30
$2,980 USD
View
3 more retailers have this diamond
Prices start from $1,420 USDSave up to $1,560 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.

B+
1.39ct Radiant
$1,420 USD