Radiant|Lab Grown|IGI

4.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG839647920

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

Certificate IGI LG839647920

Diamond specifications and retailer prices

From $869 USD

As of October 27, 2026

Save $4,171 USD (83%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: $5,040 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 LG839647920 or 839647920. Listed at 18 retailers as of October 27, 2026, with prices from $869 to $5,040, a $4,171 spread on the same certified stone. Rare Carat lists it at $5,040. 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

Color

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle44.2°

Pavilion angle32.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG839647920

Dimensions12.11 × 8.00 × 5.28 mm

L/W Ratio1.51

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG839647920

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27

Current: $5,040 USD|Low: $869 USD|High: $5,095 USD|Avg: $2,308 USD|-1.1%

Rare Carat

Retailer 2

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Retailer 18

October 27, 2026

Retailer 8$869 USD

Retailer 5$869 USD

Retailer 13$1,050 USD

Retailer 6$1,075 USD

Retailer 15$1,363 USD

Retailer 2$1,373 USD

Retailer 17$1,455 USD

Retailer 12$1,900 USD

Retailer 14$1,929 USD

Retailer 16$2,143 USD

Retailer 7$2,458 USD

Retailer 18$2,893 USD

Retailer 9$3,030 USD

Retailer 3$3,046 USD

Retailer 4$3,113 USD

Retailer 11$3,382 USD

Retailer 10$4,298 USD

Rare Carat$5,040 USD

20 data points across 18 retailers

18 retailers$869 USD to $5,040 USD

Retailer 1

$869 USD

£684 GBP

Price last confirmed 21 days ago

Retailer 2

$869 USD

View

Final sale: no returns

Retailer 3

$1,050 USD

HK$8,200 HKD

View

Retailer 4

$1,075 USD

View

Retailer 5

$1,363 USD

€1,298 EUR

View

Retailer 6

$1,373 USD

£1,081 GBP

View

Retailer 7

$1,455 USD

View

Retailer 8

$1,900 USD

ZAR 30,695 ZAR

View

Retailer 9

$1,929 USD

A$2,968 AUD

View

Price last confirmed 7 days ago

B+

Retailer 10

$2,143 USD

View

B+

Retailer 11

$2,458 USD

View

B+

Retailer 12

$2,893 USD

View

B+

Retailer 13

$3,030 USD

SGD 4,095 SGD

View

B+

Retailer 14

$3,046 USD

View

B+

Retailer 15

$3,113 USD

View

B+

Retailer 16

$3,382 USD

£2,663 GBP

View

Retailer 17

$4,298 USD

View

Most Expensive

Rare Carat

172691-BB · Oct 28

$5,040 USD

View

17 more retailers have this diamond

Prices start from $869 USDSave up to $4,171 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.

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4.51ct Radiant

$869 USD