Round|Lab Grown|IGI

1.57ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG685518428

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685518428

Diamond specifications and retailer prices

From €1,030 EUR

A$1,778 AUD

As of November 2, 2026

7 retailers carry this diamond

Most expensive: €1,775 EUR at Rare Carat · As of September 13, 2026

View at Rare Carat

About this 1.57ct lab-grown round diamond

This 1.57ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG685518428 or 685518428. Listed at 7 retailers as of November 2, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.3°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG685518428

Dimensions7.39 × 7.47 × 4.61 mm

L/W Ratio1.01

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 LG685518428

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2

Current: €1,775 EUR|Low: €411 EUR|High: €3,263 EUR|Avg: €1,285 EUR

Rare Carat

Retailer 2

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Retailer 8

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Retailer 11

Retailer 12

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Retailer 16

October 3, 2026

Retailer 12€411 EUR

Retailer 3€456 EUR

Retailer 9€657 EUR

Retailer 15€660 EUR

Retailer 6€696 EUR

Retailer 13€791 EUR

Retailer 14€845 EUR

Retailer 2€1,030 EUR

Retailer 16€1,175 EUR

Retailer 8€1,616 EUR

Retailer 7€1,658 EUR

Retailer 4€1,748 EUR

Rare Carat€1,775 EUR

Retailer 10€1,847 EUR

Retailer 11€1,863 EUR

Retailer 5€3,263 EUR

6 data points across 16 retailers

7 retailers

Retailer 1

€367 EUR

$412 USD

Price last confirmed 45 days ago

Retailer 2

€449 EUR

$504 USD

View

Price last confirmed 41 days ago

B+

Retailer 3

€1,030 EUR

A$1,778 AUD

View

Retailer 4

€1,175 EUR

$1,318 USD

View

Price last confirmed 41 days ago

Retailer 5

€1,447 EUR

A$2,497 AUD

View

Price last confirmed 97 days ago

Retailer 6

€1,616 EUR

$1,812 USD

View

Price last confirmed 42 days ago

Most Expensive

Rare Carat

V665679LG · Sep 13

€1,775 EUR

$1,991 USD

View

Price last confirmed 50 days ago

6 more retailers have this diamond

Prices start from €1,030 EUR

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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