Radiant|Lab Grown|IGI

3.51ct D IF Radiant Lab Grown Diamond

- • D/IF • IGI LG754594992

Certificate IGI LG754594992

Diamond specifications and retailer prices

From $2,432 USD
Save $13,358 USD (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $15,790 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 LG754594992 or 754594992. Listed at 22 retailers, with prices from $2,432 to $15,790 at Brilliant Earth, a $13,358 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 angle41.6°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594992
Dimensions7.50 × 7.50 × 10.89 mm
L/W Ratio1.00
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
7.50 mm7.50 mm3.51 ctD / IF
OriginLab Grown
Cut-
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594992
Side View
Table 61.0%Crown 41.6°Girdle: MED-STKPavilion 33.4°Culet: NoneDepth 66.7%

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: $15,790 USD|Low: $2,432 USD|High: $15,840 USD|Avg: $7,326 USD|-0.3%
Brilliant Earth
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
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Retailer 20
October 1, 2026
Retailer 14$2,432 USD
Retailer 20$2,646 USD
Retailer 3$2,782 USD
Retailer 6$2,925 USD
Retailer 15$3,097 USD
Retailer 2$3,163 USD
Retailer 4$3,770 USD
Retailer 8$3,878 USD
Retailer 16$4,294 USD
Retailer 7$5,364 USD
Retailer 12$5,414 USD
Retailer 19$6,060 USD
Retailer 17$7,099 USD
Retailer 9$8,185 USD
Retailer 18$8,437 USD
Retailer 13$8,752 USD
Retailer 5$10,855 USD
Retailer 10$11,243 USD
Retailer 11$12,963 USD
Brilliant Earth$15,790 USD

33 data points across 20 retailers

22 retailers$2,432 USD to $15,790 USD

A
Cheapest Retailer
-
$2,432 USD
A
Retailer 2
-
$2,646 USD
View
A
Retailer 3
-
$2,782 USD
View
A
Retailer 4
-
$2,925 USD
View
A
Retailer 5
-
$3,097 USD
View
A
Retailer 6
-
$3,163 USD
View
A
Retailer 7
-
$3,770 USD
View
A
Retailer 8
-
$3,878 USD
HK$30,300 HKD
View
B+
Retailer 9
-
$4,280 USD
View
B+
Retailer 10
-
$4,304 USD
£3,389 GBP
View
B+
Retailer 11
-
$4,622 USD
£3,640 GBP
View
Price last confirmed 21 days ago
B+
Retailer 12
-
$5,364 USD
£4,224 GBP
View
B+
Retailer 13
-
$5,414 USD
€5,156 EUR
View
Price last confirmed 47 days ago
B
Retailer 14
-
$6,060 USD
View
B
Retailer 15
-
$7,099 USD
ZAR 114,679 ZAR
View
B
Retailer 16
-
$8,185 USD
View
B
Retailer 17
-
$8,437 USD
£6,643 GBP
View
B
Retailer 18
-
$8,752 USD
A$13,464 AUD
View
B
Retailer 19
-
$10,855 USD
View
B
Retailer 20
-
$11,243 USD
SGD 15,193 SGD
View
B
Retailer 21
-
$12,963 USD
View
Price last confirmed 19 days ago
Most Expensive
B
Brilliant Earth
21476096Y · Oct 1
$15,790 USD
View
21 more retailers have this diamond
Prices start from $2,432 USDSave up to $13,358 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
$2,432 USD