Radiant|Lab Grown|IGI

3.51ct D IF Radiant Lab Grown Diamond

- • D/IF • IGI LG772621143

Certificate IGI LG772621143

Diamond specifications and retailer prices

From $2,478 USD
Save $9,512 USD (79%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $11,990 USD at Brilliant Earth
View at Brilliant Earth

About this 3.51ct lab-grown radiant diamond

This 3.51ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG772621143 or 772621143. Listed at 22 retailers, with prices from $2,478 to $11,990 at Brilliant Earth, a $9,512 spread on the same certified stone. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.51
Carat
D
Color
IF
Clarity
-
Cut

Specifications

Cut-
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle29.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG772621143
Dimensions9.59 × 7.39 × 9.59 mm
L/W Ratio1.30
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.59 mm7.39 mm3.51 ctD / IF
OriginLab Grown
Cut-
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG772621143
Side View
Table 65.0%Crown 42.6°Girdle: STK-THKPavilion 29.7°Culet: NoneDepth 68.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $11,990 USD|Low: $1,610 USD|High: $12,170 USD|Avg: $5,107 USD|-1.5%
Brilliant Earth
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
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Retailer 19
Retailer 20
October 1, 2026
Retailer 6$2,478 USD
Retailer 3$2,695 USD
Retailer 7$2,730 USD
Retailer 11$2,970 USD
Retailer 14$3,593 USD
Retailer 5$3,670 USD
Retailer 15$3,681 USD
Retailer 19$3,977 USD
Retailer 9$3,993 USD
Retailer 8$4,877 USD
Retailer 18$5,804 USD
Retailer 16$5,853 USD
Retailer 10$6,371 USD
Retailer 17$7,050 USD
Retailer 4$7,408 USD
Retailer 12$7,618 USD
Retailer 13$8,494 USD
Retailer 2$8,535 USD
Retailer 20$8,591 USD
Brilliant Earth$11,990 USD

42 data points across 20 retailers

22 retailers$2,478 USD to $11,990 USD

A
Cheapest Retailer
-
$2,478 USD
A
Retailer 2
-
$2,695 USD
View
A
Retailer 3
-
$2,730 USD
View
A
Retailer 4
-
$2,970 USD
HK$23,200 HKD
View
A
Retailer 5
-
$3,510 USD
View
Price last confirmed 45 days ago
B+
Retailer 6
-
$3,601 USD
£2,836 GBP
View
A
Retailer 7
-
$3,670 USD
View
A
Retailer 8
-
$3,681 USD
View
B+
Retailer 9
-
$3,977 USD
€3,788 EUR
View
B+
Retailer 10
-
$3,993 USD
View
B+
Retailer 11
-
$4,877 USD
£3,840 GBP
View
B+
Retailer 12
-
$5,804 USD
A$8,929 AUD
View
B+
Retailer 13
-
$5,853 USD
ZAR 94,562 ZAR
View
B+
Retailer 14
-
$6,371 USD
View
B+
Retailer 15
-
$7,050 USD
£5,551 GBP
View
B
Retailer 16
-
$7,104 USD
View
B
Retailer 17
-
$7,408 USD
View
B
Retailer 18
-
$7,618 USD
View
B
Retailer 19
-
$8,494 USD
A$13,068 AUD
View
B
Retailer 20
-
$8,535 USD
View
B
Retailer 21
-
$8,591 USD
SGD 11,609 SGD
View
Most Expensive
B
Brilliant Earth
18059004A · Oct 1
$11,990 USD
View
21 more retailers have this diamond
Prices start from $2,478 USDSave up to $9,512 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.

A
3.51ct Radiant
$2,478 USD