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Radiant|Lab Grown|IGI

1.36ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG816615817

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

Certificate IGI LG816615817

Diamond specifications and retailer prices

From $347 USD
As of October 30, 2026
Save $2,323 USD (87%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,170 USD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.36ct lab-grown radiant diamond

This 1.36ct 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 LG816615817 or 816615817. Listed at 20 retailers as of October 30, 2026, with a 669% 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

1.36
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.4°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615817
Dimensions7.61 × 5.59 × 3.66 mm
L/W Ratio1.36
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
7.61 mm5.59 mm1.36 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615817
Side View
Table 63.0%Crown 47.4°Girdle: MED-STKPavilion 35.3°Culet: NoneDepth 65.5%

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 30
Current: $2,670 USD|Low: $326 USD|High: $4,170 USD|Avg: $1,427 USD|-36.0%
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
October 30, 2026
Retailer 9$347 USD
Retailer 14$520 USD
Retailer 11$593 USD
Retailer 8$621 USD
Retailer 2$638 USD
Retailer 4$671 USD
Retailer 13$959 USD
Retailer 10$1,111 USD
Retailer 12$1,211 USD
Retailer 6$1,331 USD
Retailer 7$1,448 USD
Retailer 15$1,450 USD
Retailer 5$1,506 USD
Brilliant Earth$2,670 USD
Retailer 3$3,060 USD

29 data points across 15 retailers

20 retailers$347 USD to $2,670 USD

A
Cheapest Retailer
-
$347 USD
Final sale: no returns
Retailer 2
-
$386 USD
View
Price last confirmed 28 days ago
Retailer 3
-
$450 USD
View
Price last confirmed 33 days ago
Retailer 4
-
$499 USD
View
Price last confirmed 27 days ago
A
Retailer 5
-
$520 USD
View
A
Retailer 6
-
$593 USD
View
A
Retailer 7
-
$621 USD
ZAR 10,034 ZAR
View
A
Retailer 8
-
$638 USD
£503 GBP
View
Retailer 9
-
$671 USD
€639 EUR
View
Price last confirmed 7 days ago
B+
Retailer 10
-
$959 USD
View
B+
Retailer 11
-
$1,111 USD
View
B+
Retailer 12
-
$1,211 USD
View
B+
Retailer 13
-
$1,331 USD
SGD 1,799 SGD
View
Retailer 14
-
$1,448 USD
£1,140 GBP
View
Price last confirmed 26 days ago
B+
Retailer 15
-
$1,450 USD
£1,142 GBP
View
B
Retailer 16
-
$1,506 USD
View
Retailer 17
-
$1,603 USD
View
Price last confirmed 30 days ago
B
Retailer 18
-
$2,670 USD
View
Retailer 19
-
$3,060 USD
View
Price last confirmed 9 days ago
Most Expensive
Brilliant Earth
21139509A · Sep 28
$4,170 USD
View
Price last confirmed 32 days ago
19 more retailers have this diamond
Prices start from $347 USDSave up to $2,323 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
1.36ct Radiant
$347 USD