Heart|Lab Grown|IGI

1.28ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG752551204

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG752551204

Diamond specifications and retailer prices

From $256 CAD

$183 USD

As of October 27, 2026

Save $1,339 CAD (84%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: $1,596 CAD at Brilliant Earth · As of October 28, 2026

View at Brilliant Earth

About this 1.28ct lab-grown heart diamond

This 1.28ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG752551204 or 752551204. Listed at 18 retailers as of October 27, 2026, with prices from $256 to $1,596, a $1,339 spread on the same certified stone. Brilliant Earth lists it at $1,596. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.28

Carat

Color

SI1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle37.9°

Pavilion angle40.3°

OriginLab Grown

Grading LabIGI

CertificateIGI LG752551204

Dimensions7.49 × 6.58 × 4.49 mm

L/W Ratio1.14

Girdle conditionFaceted

Culet sizePointed

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 LG752551204

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: $1,596 CAD|Low: $245 CAD|High: $1,596 CAD|Avg: $687 CAD

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

October 30, 2026

Retailer 9$256 CAD

Retailer 6$286 CAD

Retailer 10$316 CAD

Retailer 3$427 CAD

Retailer 2$572 CAD

Retailer 4$617 CAD

Retailer 12$666 CAD

Retailer 8$708 CAD

Retailer 7$802 CAD

Retailer 11$1,019 CAD

Retailer 5$1,490 CAD

Brilliant Earth$1,596 CAD

44 data points across 12 retailers

18 retailers$256 CAD to $1,596 CAD

Cheapest Retailer

$256 CAD

$183 USD

Retailer 2

$286 CAD

$204 USD

View

Final sale: no returns

Retailer 3

$297 CAD

$212 USD

View

Retailer 4

$316 CAD

$226 USD

View

Retailer 5

$316 CAD

$226 USD

View

B+

Retailer 6

$427 CAD

$305 USD

View

B+

Retailer 7

$572 CAD

£322 GBP

View

B+

Retailer 8

$617 CAD

$441 USD

View

B+

Retailer 9

$666 CAD

$476 USD

View

Retailer 10

$683 CAD

$488 USD

View

Price last confirmed 31 days ago

B+

Retailer 11

$708 CAD

A$778 AUD

View

Retailer 12

$802 CAD

$573 USD

View

Retailer 13

$1,019 CAD

$728 USD

View

Retailer 14

$1,034 CAD

SGD 998 SGD

View

Retailer 15

$1,095 CAD

$782 USD

View

Retailer 16

$1,490 CAD

£838 GBP

View

Retailer 17

$1,593 CAD

$1,138 USD

View

Most Expensive

Brilliant Earth

16872834A · Oct 28

$1,596 CAD

$1,140 USD

View

17 more retailers have this diamond

Prices start from $256 CADSave up to $1,339 CAD

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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