Radiant|Lab Grown|IGI

3.51ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG823672387

Certificate IGI LG823672387

Diamond specifications and retailer prices

From $3,319 USD
£2,614 GBP
Save $4,964 USD (60%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,283 USD at Taylor and Hart
View at Taylor and Hart

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 top-tier cut grade and certified by IGI LG823672387 or 823672387. Listed at 9 retailers, with prices from $3,319 to $8,283 at Taylor and Hart, a $4,964 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

3.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.9°
Pavilion angle31.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823672387
Dimensions10.52 × 7.28 × 4.91 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.52 mm7.28 mm3.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823672387
Side View
Table 64.0%Crown 44.9°Girdle: Slightly ThickPavilion 31.4°Culet: NoneDepth 67.4%

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: Oct 1
Current: $3,938 USD|Low: $3,092 USD|High: $8,495 USD|Avg: $4,927 USD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Taylor and Hart
September 29, 2026
Retailer 2$3,312 USD
Retailer 5$3,385 USD
Retailer 1$3,938 USD
Retailer 8$3,945 USD
Retailer 6$4,496 USD
Retailer 3$5,398 USD
Retailer 4$6,843 USD
Retailer 7$7,910 USD
Taylor and Hart$8,283 USD

33 data points across 9 retailers

9 retailers$3,319 USD to $8,283 USD

B+
Cheapest Retailer
-
$3,319 USD
£2,614 GBP
B+
Retailer 2
-
$3,385 USD
View
B+
Retailer 3
-
$3,938 USD
View
B+
Retailer 4
-
$3,945 USD
€3,757 EUR
View
B+
Retailer 5
-
$4,496 USD
£3,540 GBP
View
B
Retailer 6
-
$5,398 USD
ZAR 87,205 ZAR
View
B
Retailer 7
-
$6,843 USD
£5,388 GBP
View
C
Retailer 8
-
$7,910 USD
SGD 10,689 SGD
View
Most Expensive
C
Taylor and Hart
9VX7EKB · Oct 1
$8,283 USD
View
8 more retailers have this diamond
Prices start from $3,319 USDSave up to $4,964 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
$3,319 USD