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Round|Lab Grown|IGI

1.57ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG645410374

Shape and cutting style on the report: Round brilliant

Certificate IGI LG645410374

Diamond specifications and retailer prices

From €255 EUR
$286 USD
As of November 1, 2026
Save €1,054 EUR (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €1,730 EUR at Rare Carat · As of October 21, 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 LG645410374 or 645410374. Listed at 20 retailers as of November 1, 2026, with a 413% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645410374
Dimensions7.45 × 7.43 × 4.61 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
Top View
7.45 mm7.43 mm1.57 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645410374
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.9%

Caratlytics Score

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A
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: €1,730 EUR|Low: €255 EUR|High: €1,752 EUR|Avg: €690 EUR|-1.3%
Rare Carat
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
Retailer 15
Retailer 16
November 2, 2026
Retailer 14€255 EUR
Retailer 6€284 EUR
Retailer 13€296 EUR
Retailer 3€317 EUR
Retailer 11€317 EUR
Retailer 2€449 EUR
Retailer 8€521 EUR
Retailer 15€522 EUR
Retailer 10€546 EUR
Retailer 9€557 EUR
Retailer 4€743 EUR
Retailer 5€972 EUR
Retailer 12€1,017 EUR
Retailer 7€1,217 EUR
Retailer 16€1,275 EUR
Rare Carat€1,730 EUR

34 data points across 16 retailers

20 retailers€255 EUR to €1,309 EUR

A
Cheapest Retailer
-
€255 EUR
$286 USD
A
Retailer 2
-
€284 EUR
$319 USD
View
Final sale: no returns
A
Retailer 3
-
€296 EUR
$332 USD
View
A
Retailer 4
-
€317 EUR
$355 USD
View
Retailer 5
-
€317 EUR
$355 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
€449 EUR
£397 GBP
View
A
Retailer 7
-
€521 EUR
$584 USD
View
A
Retailer 8
-
€522 EUR
$585 USD
View
A
Retailer 9
-
€546 EUR
ZAR 9,885 ZAR
View
A
Retailer 10
-
€551 EUR
$618 USD
View
A
Retailer 11
-
€557 EUR
£492 GBP
View
Retailer 12
-
€743 EUR
A$1,282 AUD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
€810 EUR
$909 USD
View
B+
Retailer 14
-
€972 EUR
$1,090 USD
View
B+
Retailer 15
-
€1,017 EUR
$1,141 USD
View
B+
Retailer 16
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€1,061 EUR
$1,190 USD
View
B+
Retailer 17
-
€1,217 EUR
$1,365 USD
View
B+
Retailer 18
-
€1,275 EUR
£1,126 GBP
View
B
Retailer 19
-
€1,309 EUR
$1,469 USD
View
Most Expensive
Rare Carat
8804_l_645410374 · Oct 21
€1,730 EUR
$1,940 USD
View
Price last confirmed 12 days ago
19 more retailers have this diamond
Prices start from €255 EURSave up to €1,054 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.

A
1.57ct Round
€255 EUR