Radiant|Lab Grown|IGI

4.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG847660231

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG847660231

Diamond specifications and retailer prices

From $1,173 USD
£923 GBP
As of October 29, 2026
Save $3,612 USD (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,785 USD at Rare Carat · As of October 28, 2026
View at Rare Carat

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG847660231 or 847660231. Listed at 8 retailers as of October 28, 2026, with prices from $1,173 to $4,785, a $3,612 spread on the same certified stone. Rare Carat lists it at $4,785. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.2°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847660231
Dimensions11.74 × 8.10 × 5.33 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.74 mm8.10 mm4.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847660231
Side View
Table 68.0%Crown 42.2°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $4,785 USD|Low: $1,173 USD|High: $4,785 USD|Avg: $2,937 USD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 3$1,173 USD
Retailer 2$1,235 USD
Retailer 8$1,953 USD
Retailer 5$2,560 USD
Retailer 6$2,583 USD
Retailer 7$4,176 USD
Retailer 4$4,396 USD
Rare Carat$4,785 USD

4 data points across 8 retailers

8 retailers$1,173 USD to $4,785 USD

A
Cheapest Retailer
-
$1,173 USD
£923 GBP
A
Retailer 2
-
$1,235 USD
View
A
Retailer 3
-
$1,953 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$2,560 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$2,583 USD
View
Price last confirmed 7 days ago
B
Retailer 6
-
$4,176 USD
£3,288 GBP
View
Price last confirmed 8 days ago
B
Retailer 7
-
$4,396 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Rare Carat
2082646 · Oct 28
$4,785 USD
View
7 more retailers have this diamond
Prices start from $1,173 USDSave up to $3,612 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
4.51ct Radiant
$1,173 USD