Radiant|Lab Grown|IGI

1.27ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG831604107

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

Certificate IGI LG831604107

Diamond specifications and retailer prices

From $370 USD
As of November 1, 2026
Save $2,930 USD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,300 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.27ct lab-grown radiant diamond

This 1.27ct 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 LG831604107 or 831604107. Listed at 16 retailers as of October 31, 2026, with prices from $370 to $3,300, a $2,930 spread on the same certified stone. Brilliant Earth lists it at $3,300. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.27
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle32.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604107
Dimensions7.86 × 5.25 × 3.47 mm
L/W Ratio1.50
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
7.86 mm5.25 mm1.27 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604107
Side View
Table 65.0%Crown 42.9°Girdle: MediumPavilion 32.3°Culet: NoneDepth 66.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $3,300 USD|Low: $370 USD|High: $3,300 USD|Avg: $1,183 USD
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
November 1, 2026
Retailer 3$370 USD
Retailer 10$423 USD
Retailer 16$448 USD
Retailer 6$560 USD
Retailer 12$565 USD
Retailer 14$713 USD
Retailer 11$735 USD
Retailer 7$763 USD
Retailer 13$865 USD
Retailer 8$1,057 USD
Retailer 4$1,314 USD
Retailer 15$1,364 USD
Retailer 5$1,482 USD
Retailer 9$1,612 USD
Retailer 2$1,646 USD
Brilliant Earth$3,300 USD

16 data points across 16 retailers

16 retailers$370 USD to $3,300 USD

A
Cheapest Retailer
-
$370 USD
Final sale: no returns
A
Retailer 2
-
$423 USD
£333 GBP
View
A
Retailer 3
-
$448 USD
HK$3,500 HKD
View
A
Retailer 4
-
$560 USD
View
A
Retailer 5
-
$565 USD
View
A
Retailer 6
-
$713 USD
€679 EUR
View
A
Retailer 7
-
$735 USD
£579 GBP
View
A
Retailer 8
-
$763 USD
ZAR 12,319 ZAR
View
B+
Retailer 9
-
$865 USD
View
B+
Retailer 10
-
$1,057 USD
View
B+
Retailer 11
-
$1,314 USD
SGD 1,776 SGD
View
B+
Retailer 12
-
$1,364 USD
View
B+
Retailer 13
-
$1,482 USD
View
B+
Retailer 14
-
$1,612 USD
View
B+
Retailer 15
-
$1,646 USD
£1,296 GBP
View
Most Expensive
B
Brilliant Earth
22154082A · Oct 31
$3,300 USD
View
15 more retailers have this diamond
Prices start from $370 USDSave up to $2,930 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
1.27ct Radiant
$370 USD