Radiant|Lab Grown|IGI

4.51ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG799676701

Certificate IGI LG799676701

Diamond specifications and retailer prices

From $6,164 USD
Save $18,866 USD (75%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $25,030 USD at Brilliant Earth
View at Brilliant Earth

About this 4.51ct lab-grown radiant diamond

This 4.51ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799676701 or 799676701. Listed at 23 retailers, with prices from $6,164 to $25,030 at Brilliant Earth, a $18,866 spread on the same certified stone. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.51
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.6°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799676701
Dimensions11.66 × 8.17 × 5.40 mm
L/W Ratio1.43
Culet sizePointed
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
11.66 mm8.17 mm4.51 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799676701
Side View
Table 64.0%Crown 47.6°Girdle: MediumPavilion 33.6°Culet: NoneDepth 66.1%

Caratlytics Score

How it works →
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: Sep 30
Current: $25,030 USD|Low: $5,340 USD|High: $27,051 USD|Avg: $12,415 USD
Brilliant Earth
Retailer 2
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Retailer 22
October 1, 2026
Retailer 16$6,164 USD
Retailer 22$6,460 USD
Retailer 6$6,508 USD
Retailer 9$6,902 USD
Retailer 11$7,051 USD
Retailer 5$7,135 USD
Retailer 3$7,150 USD
Retailer 17$8,217 USD
Retailer 13$8,488 USD
Retailer 4$8,602 USD
Retailer 20$8,965 USD
Retailer 19$9,135 USD
Retailer 8$10,196 USD
Retailer 10$11,008 USD
Retailer 2$11,658 USD
Retailer 21$14,724 USD
Retailer 18$14,941 USD
Retailer 15$14,981 USD
Retailer 12$19,894 USD
Retailer 7$24,846 USD
Retailer 14$24,905 USD
Brilliant Earth$25,030 USD

36 data points across 22 retailers

23 retailers$6,164 USD to $25,030 USD

A
Cheapest Retailer
-
$6,164 USD
A
Retailer 2
-
$6,460 USD
View
A
Retailer 3
-
$6,508 USD
View
A
Retailer 4
-
$6,902 USD
View
A
Retailer 5
-
$7,051 USD
View
A
Retailer 6
-
$7,135 USD
View
A
Retailer 7
-
$7,150 USD
View
A
Retailer 8
-
$8,217 USD
View
B+
Retailer 9
-
$8,488 USD
View
B+
Retailer 10
-
$8,602 USD
HK$67,200 HKD
View
B+
Retailer 11
-
$8,965 USD
View
B+
Retailer 12
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$9,156 USD
£7,209 GBP
View
B+
Retailer 13
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$10,196 USD
£8,028 GBP
View
B+
Retailer 14
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$11,008 USD
View
B+
Retailer 15
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$11,658 USD
€11,103 EUR
View
B+
Retailer 16
-
$14,216 USD
View
B+
Retailer 17
-
$14,724 USD
£11,594 GBP
View
B
Retailer 18
-
$14,941 USD
ZAR 241,375 ZAR
View
B
Retailer 19
-
$14,981 USD
View
B
Retailer 20
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$19,894 USD
View
B
Retailer 21
-
$24,846 USD
View
B
Retailer 22
-
$24,905 USD
SGD 33,656 SGD
View
Most Expensive
B
Brilliant Earth
19796083A · Oct 1
$25,030 USD
View
22 more retailers have this diamond
Prices start from $6,164 USDSave up to $18,866 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
4.51ct Radiant
$6,164 USD