Radiant|Lab Grown|IGI

3.15ct E VVS1 Radiant Lab Grown Diamond

EX • E/VVS1 • IGI LG821651330

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

Certificate IGI LG821651330

Diamond specifications and retailer prices

From $636 USD

As of October 29, 2026

Save $3,019 USD (83%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: $3,655 USD at Rare Carat · As of October 28, 2026

View at Rare Carat

About this 3.15ct lab-grown radiant diamond

This 3.15ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG821651330 or 821651330. Listed at 17 retailers as of October 28, 2026, with prices from $636 to $3,655, a $3,019 spread on the same certified stone. Rare Carat lists it at $3,655. 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

3.15

Carat

Color

VVS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.6°

Pavilion angle35.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG821651330

Dimensions9.86 × 7.11 × 4.86 mm

L/W Ratio1.39

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG821651330

Side View

Caratlytics Score

How it works →

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: $3,655 USD|Low: $636 USD|High: $3,655 USD|Avg: $1,906 USD|+1.5%

Rare Carat

Retailer 2

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Retailer 17

October 28, 2026

Retailer 14$636 USD

Retailer 10$835 USD

Retailer 17$948 USD

Retailer 2$1,092 USD

Retailer 5$1,203 USD

Retailer 7$1,515 USD

Retailer 3$1,521 USD

Retailer 6$1,754 USD

Retailer 11$1,892 USD

Retailer 12$2,042 USD

Retailer 13$2,281 USD

Retailer 8$2,313 USD

Retailer 4$2,333 USD

Retailer 15$2,809 USD

Retailer 9$2,946 USD

Retailer 16$3,073 USD

Rare Carat$3,655 USD

21 data points across 17 retailers

17 retailers$636 USD to $3,655 USD

Cheapest Retailer

$636 USD

Final sale: no returns

Retailer 2

$835 USD

View

Retailer 3

$948 USD

View

Retailer 4

$1,092 USD

£860 GBP

View

Retailer 5

$1,203 USD

€1,146 EUR

View

Retailer 6

$1,515 USD

A$2,330 AUD

View

Price last confirmed 9 days ago

Retailer 7

$1,521 USD

ZAR 24,571 ZAR

View

Retailer 8

$1,754 USD

View

Retailer 9

$1,892 USD

View

B+

Retailer 10

$2,042 USD

£1,608 GBP

View

B+

Retailer 11

$2,281 USD

View

B+

Retailer 12

$2,313 USD

View

B+

Retailer 13

$2,333 USD

View

B+

Retailer 14

$2,809 USD

SGD 3,796 SGD

View

B+

Retailer 15

$2,946 USD

A$4,532 AUD

View

Price last confirmed 21 days ago

B+

Retailer 16

$3,073 USD

£2,420 GBP

View

Most Expensive

Rare Carat

CN215-15A · Oct 28

$3,655 USD

View

16 more retailers have this diamond

Prices start from $636 USDSave up to $3,019 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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3.15ct Radiant

$636 USD