Radiant|Lab Grown|IGI

3.12ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG828684106

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

Certificate IGI LG828684106

Diamond specifications and retailer prices

From $981 USD

As of October 29, 2026

Save $2,991 USD (75%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $4,812 USD at Novita Diamonds · As of October 5, 2026

View at Novita Diamonds

About this 3.12ct lab-grown radiant diamond

This 3.12ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG828684106 or 828684106. Listed at 16 retailers as of October 29, 2026, with a 305% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.12

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle42.2°

Pavilion angle33.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG828684106

Dimensions11.02 × 7.00 × 4.66 mm

L/W Ratio1.57

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 LG828684106

Side View

Caratlytics Score

How it works →

A+

Exceptional

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 29

Current: $1,549 USD|Low: $981 USD|High: $4,100 USD|Avg: $2,331 USD|-5.8%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

October 29, 2026

Retailer 12$981 USD

Retailer 9$1,118 USD

Retailer 2$1,230 USD

Retailer 13$1,455 USD

Retailer 4$1,546 USD

Retailer 1$1,549 USD

Retailer 5$2,272 USD

Retailer 6$2,317 USD

Retailer 7$2,346 USD

Retailer 14$3,062 USD

Retailer 3$3,525 USD

Retailer 11$3,650 USD

Retailer 8$3,807 USD

Retailer 10$3,972 USD

17 data points across 14 retailers

16 retailers$981 USD to $3,972 USD

A+

Cheapest Retailer

$981 USD

Final sale: no returns

Retailer 2

$1,118 USD

£881 GBP

View

Retailer 3

$1,230 USD

View

Retailer 4

$1,455 USD

View

Retailer 5

$1,546 USD

€1,472 EUR

View

Retailer 6

$1,549 USD

£1,220 GBP

View

Retailer 7

$2,272 USD

View

Retailer 8

$2,317 USD

A$3,564 AUD

View

Price last confirmed 8 days ago

Retailer 9

$2,346 USD

ZAR 37,897 ZAR

View

Retailer 10

$3,062 USD

View

B+

Retailer 11

$3,297 USD

View

B+

Retailer 12

$3,525 USD

View

B+

Retailer 13

$3,650 USD

View

B+

Retailer 14

$3,807 USD

£2,998 GBP

View

B+

Retailer 15

$3,972 USD

SGD 5,368 SGD

View

Most Expensive

Novita Diamonds

cert_828684106 · Oct 5

$4,812 USD

A$7,403 AUD

View

Price last confirmed 24 days ago

15 more retailers have this diamond

Prices start from $981 USDSave up to $2,991 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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A+

3.12ct Radiant

$981 USD