Heart|Lab Grown|IGI

1.57ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG528207699

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG528207699

Diamond specifications and retailer prices

From $241 USD

As of October 27, 2026

Save $1,085 USD (82%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $1,326 USD at Reve Diamonds · As of October 28, 2026

View at Reve Diamonds

About this 1.57ct lab-grown heart diamond

This 1.57ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG528207699 or 528207699. Listed at 16 retailers as of October 27, 2026, with prices from $241 to $1,326, a $1,085 spread on the same certified stone. Reve Diamonds lists it at $1,326. 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

1.57

Carat

Color

SI1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35°

Pavilion angle38.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG528207699

Dimensions8.11 × 6.90 × 4.63 mm

L/W Ratio1.18

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 LG528207699

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 27

Current: $565 USD|Low: $232 USD|High: $1,326 USD|Avg: $602 USD|+5.4%

Retailer 1

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Retailer 16

Reve Diamonds

October 29, 2026

Retailer 13$241 USD

Retailer 7$270 USD

Retailer 16$280 USD

Retailer 3$299 USD

Retailer 14$299 USD

Retailer 9$385 USD

Retailer 2$402 USD

Retailer 8$469 USD

Retailer 6$499 USD

Retailer 4$552 USD

Retailer 1$565 USD

Retailer 11$584 USD

Retailer 15$962 USD

Retailer 12$965 USD

Retailer 5$1,014 USD

Retailer 10$1,200 USD

Reve Diamonds$1,326 USD

38 data points across 17 retailers

16 retailers$241 USD to $1,326 USD

Cheapest Retailer

$241 USD

Retailer 2

$270 USD

View

Final sale: no returns

Retailer 3

$280 USD

View

Retailer 4

$299 USD

View

Retailer 5

$299 USD

View

Retailer 6

$385 USD

£303 GBP

View

B+

Retailer 7

$402 USD

View

B+

Retailer 8

$499 USD

View

B+

Retailer 9

$552 USD

View

B+

Retailer 10

$565 USD

£445 GBP

View

B+

Retailer 11

$584 USD

A$898 AUD

View

Retailer 12

$962 USD

View

Retailer 13

$965 USD

View

Retailer 14

$1,014 USD

View

Retailer 15

$1,200 USD

£945 GBP

View

Most Expensive

Reve Diamonds

F23C86C3D · Oct 28

$1,326 USD

View

15 more retailers have this diamond

Prices start from $241 USDSave up to $1,085 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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1.57ct Heart

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