Radiant|Lab Grown|IGI

3.51ct D IF Radiant Lab Grown Diamond

GD • D/IF • IGI LG828616385

Certificate IGI LG828616385

Diamond specifications and retailer prices

From $3,147 USD
Save $8,941 USD (74%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $12,088 USD at With Clarity
View at With Clarity

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 LG828616385 or 828616385. Listed at 12 retailers, with prices from $3,147 to $12,088 at With Clarity, a $8,941 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
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle32.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828616385
Dimensions11.17 × 7.49 × 4.93 mm
L/W Ratio1.49
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
11.17 mm7.49 mm3.51 ctD / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828616385
Side View
Table 62.0%Crown 39.7°Girdle: MED-STKPavilion 32.8°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $4,149 USD|Low: $3,147 USD|High: $12,088 USD|Avg: $6,595 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
With Clarity
October 1, 2026
Retailer 5$3,147 USD
Retailer 10$3,770 USD
Retailer 6$3,814 USD
Retailer 1$4,149 USD
Retailer 7$4,298 USD
Retailer 2$6,495 USD
Retailer 9$8,185 USD
Retailer 3$8,437 USD
Retailer 4$8,744 USD
Retailer 8$10,855 USD
With Clarity$12,088 USD

3 data points across 11 retailers

12 retailers$3,147 USD to $12,088 USD

B+
Cheapest Retailer
-
$3,147 USD
B+
Retailer 2
-
$3,770 USD
View
B+
Retailer 3
-
$3,814 USD
HK$29,800 HKD
View
B+
Retailer 4
-
$4,149 USD
View
B+
Retailer 5
-
$4,304 USD
£3,389 GBP
View
B
Retailer 6
-
$5,405 USD
View
B
Retailer 7
-
$6,495 USD
View
B
Retailer 8
-
$8,185 USD
View
B
Retailer 9
-
$8,437 USD
£6,643 GBP
View
B
Retailer 10
-
$8,744 USD
A$13,453 AUD
View
C
Retailer 11
-
$10,855 USD
View
Most Expensive
C
With Clarity
828616385 · Sep 30
$12,088 USD
View
11 more retailers have this diamond
Prices start from $3,147 USDSave up to $8,941 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.

B+
3.51ct Radiant
$3,147 USD