Radiant|Lab Grown|IGI

1.38ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG801686053

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

Certificate IGI LG801686053

Diamond specifications and retailer prices

From $450 USD
As of October 30, 2026
Save $3,630 USD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,080 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.38ct lab-grown radiant diamond

This 1.38ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG801686053 or 801686053. Listed at 15 retailers as of October 29, 2026, with prices from $450 to $4,080, a $3,630 spread on the same certified stone. Brilliant Earth lists it at $4,080. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.38
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.9°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801686053
Dimensions7.92 × 5.51 × 3.76 mm
L/W Ratio1.44
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
7.92 mm5.51 mm1.38 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801686053
Side View
Table 64.0%Crown 43.9°Girdle: MED-STKPavilion 36.1°Culet: NoneDepth 68.2%

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: $4,080 USD|Low: $322 USD|High: $4,210 USD|Avg: $1,497 USD|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 4$450 USD
Retailer 2$456 USD
Retailer 6$562 USD
Retailer 12$590 USD
Retailer 9$648 USD
Retailer 11$744 USD
Retailer 3$794 USD
Retailer 8$1,173 USD
Retailer 5$1,727 USD
Retailer 7$2,860 USD
Retailer 10$3,090 USD
Brilliant Earth$4,080 USD

35 data points across 12 retailers

15 retailers$450 USD to $4,080 USD

Retailer 1
-
$340 USD
Price last confirmed 18 days ago
Retailer 2
-
$394 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$450 USD
View
Final sale: no returns
A
Retailer 4
-
$456 USD
£359 GBP
View
A
Retailer 5
-
$562 USD
View
A
Retailer 6
-
$590 USD
View
A
Retailer 7
-
$648 USD
View
A
Retailer 8
-
$744 USD
€709 EUR
View
A
Retailer 9
-
$794 USD
View
B+
Retailer 10
-
$1,173 USD
View
Retailer 11
-
$1,494 USD
View
Price last confirmed 19 days ago
B+
Retailer 12
-
$1,727 USD
£1,360 GBP
View
B
Retailer 13
-
$2,860 USD
View
Retailer 14
-
$3,090 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
20497686Y · Oct 29
$4,080 USD
View
14 more retailers have this diamond
Prices start from $450 USDSave up to $3,630 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
1.38ct Radiant
$450 USD