Round|Lab Grown|IGI

2.78ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG762545352

Shape and cutting style on the report: Round brilliant

Certificate IGI LG762545352

Diamond specifications and retailer prices

From $1,161 USD

As of November 1, 2026

Save $6,189 USD (84%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: $7,350 USD at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 2.78ct lab-grown round diamond

This 2.78ct lab-grown round sits in the two to three carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG762545352 or 762545352. Listed at 17 retailers as of October 31, 2026, with prices from $1,161 to $7,350, a $6,189 spread on the same certified stone. Brilliant Earth lists it at $7,350. 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

2.78

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.4°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG762545352

Dimensions9.10 × 9.14 × 5.47 mm

L/W Ratio1.00

Girdle conditionFaceted

Culet sizePointed

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG762545352

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: Nov 1

Current: $7,350 USD|Low: $1,161 USD|High: $9,210 USD|Avg: $3,218 USD|-20.2%

Brilliant Earth

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

November 1, 2026

Retailer 4$1,161 USD

Retailer 12$1,455 USD

Retailer 2$1,476 USD

Retailer 9$1,500 USD

Retailer 7$1,541 USD

Retailer 5$1,809 USD

Retailer 6$2,471 USD

Retailer 8$2,487 USD

Retailer 14$2,953 USD

Retailer 10$3,633 USD

Retailer 11$4,083 USD

Retailer 13$5,210 USD

Retailer 3$7,091 USD

Brilliant Earth$7,350 USD

42 data points across 14 retailers

17 retailers$1,161 USD to $7,350 USD

Cheapest Retailer

$1,161 USD

Retailer 2

$1,254 USD

HK$9,800 HKD

View

Retailer 3

$1,455 USD

View

Retailer 4

$1,462 USD

£1,152 GBP

View

Price last confirmed 16 days ago

Retailer 5

$1,476 USD

£1,162 GBP

View

Retailer 6

$1,500 USD

A$2,308 AUD

View

Retailer 7

$1,541 USD

€1,468 EUR

View

Retailer 8

$1,809 USD

View

B+

Retailer 9

$2,471 USD

View

B+

Retailer 10

$2,487 USD

ZAR 40,182 ZAR

View

B+

Retailer 11

$2,953 USD

View

B+

Retailer 12

$3,442 USD

View

B+

Retailer 13

$3,633 USD

£2,861 GBP

View

Retailer 14

$4,083 USD

A$6,281 AUD

View

Price last confirmed 23 days ago

Retailer 15

$5,210 USD

View

Price last confirmed 17 days ago

Retailer 16

$7,091 USD

View

Most Expensive

Brilliant Earth

19080341Y · Oct 31

$7,350 USD

View

16 more retailers have this diamond

Prices start from $1,161 USDSave up to $6,189 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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2.78ct Round

$1,161 USD