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Round|Lab Grown|IGI

1.57ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG776679751

Shape and cutting style on the report: Round brilliant

Certificate IGI LG776679751

Diamond specifications and retailer prices

From £575 GBP
$770 USD
As of November 2, 2026
Save £2,254 GBP (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,829 GBP at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

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 LG776679751 or 776679751. Listed at 12 retailers as of November 1, 2026, with prices from £575 to £2,829, a £2,254 spread on the same certified stone. Brilliant Earth lists it at £2,829. 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
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776679751
Dimensions7.44 × 7.48 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.44 mm7.48 mm1.57 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776679751
Side View
Table 57.0%Crown 34.4°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
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: Nov 2
Current: £2,829 GBP|Low: £525 GBP|High: £2,829 GBP|Avg: £1,253 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7£525 GBP
Retailer 11£694 GBP
Retailer 10£742 GBP
Retailer 2£904 GBP
Retailer 5£995 GBP
Retailer 8£1,190 GBP
Retailer 6£1,519 GBP
Retailer 9£1,687 GBP
Retailer 3£1,956 GBP
Retailer 4£2,281 GBP
Brilliant Earth£2,829 GBP

42 data points across 11 retailers

12 retailers£575 GBP to £2,829 GBP

Retailer 1
-
£525 GBP
$703 USD
Price last confirmed 16 days ago
A
Retailer 2
-
£575 GBP
$770 USD
View
B+
Retailer 3
-
£694 GBP
$930 USD
View
B+
Retailer 4
-
£742 GBP
$994 USD
View
B+
Retailer 5
-
£904 GBP
View
B+
Retailer 6
-
£995 GBP
ZAR 21,530 ZAR
View
Retailer 7
-
£1,190 GBP
A$2,453 AUD
View
Price last confirmed 25 days ago
Retailer 8
-
£1,519 GBP
$2,035 USD
View
Price last confirmed 11 days ago
B
Retailer 9
-
£1,687 GBP
$2,261 USD
View
B
Retailer 10
-
£1,956 GBP
$2,621 USD
View
B
Retailer 11
-
£2,281 GBP
View
Most Expensive
B
Brilliant Earth
19671652A · Nov 1
£2,829 GBP
$3,790 USD
View
11 more retailers have this diamond
Prices start from £575 GBPSave up to £2,254 GBP

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
£575 GBP