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Round|Lab Grown|IGI

1.53ct F FL Round Lab Grown Diamond

EX • F/FL • IGI LG800620435

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800620435

Diamond specifications and retailer prices

From £363 GBP
As of November 3, 2026
Save £1,615 GBP (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,978 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.53ct lab-grown round diamond

This 1.53ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800620435 or 800620435. Listed at 19 retailers as of November 3, 2026, with prices from £363 to £1,978, a £1,615 spread on the same certified stone. Brilliant Earth lists it at £1,978. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.53
Carat
F
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800620435
Dimensions7.33 × 7.30 × 4.59 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.33 mm7.30 mm1.53 ctF / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800620435
Side View
Table 58.0%Crown 36.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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 3
Current: £1,978 GBP|Low: £348 GBP|High: £2,993 GBP|Avg: £985 GBP|-33.9%
Brilliant Earth
Retailer 2
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Retailer 12
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Retailer 18
November 4, 2026
Retailer 12£363 GBP
Retailer 14£407 GBP
Retailer 7£450 GBP
Retailer 16£450 GBP
Retailer 11£552 GBP
Retailer 5£604 GBP
Retailer 8£623 GBP
Retailer 3£673 GBP
Retailer 9£696 GBP
Retailer 2£739 GBP
Retailer 18£776 GBP
Retailer 17£1,059 GBP
Retailer 13£1,184 GBP
Retailer 10£1,467 GBP
Retailer 6£1,683 GBP
Retailer 15£1,879 GBP
Retailer 4£1,963 GBP
Brilliant Earth£1,978 GBP

44 data points across 18 retailers

19 retailers£363 GBP to £1,978 GBP

A
Cheapest Retailer
-
£363 GBP
A
Retailer 2
-
£407 GBP
View
A
Retailer 3
-
£450 GBP
View
Retailer 4
-
£450 GBP
View
Price last confirmed 19 days ago
A
Retailer 5
-
£552 GBP
View
A
Retailer 6
-
£604 GBP
View
B+
Retailer 7
-
£623 GBP
View
B+
Retailer 8
-
£673 GBP
View
B+
Retailer 9
-
£696 GBP
View
B+
Retailer 10
-
£739 GBP
View
B+
Retailer 11
-
£776 GBP
View
B
Retailer 12
-
£1,059 GBP
View
B
Retailer 13
-
£1,184 GBP
View
Retailer 14
-
£1,210 GBP
View
Price last confirmed 9 days ago
B
Retailer 15
-
£1,467 GBP
View
B
Retailer 16
-
£1,683 GBP
View
B
Retailer 17
-
£1,879 GBP
View
Retailer 18
-
£1,963 GBP
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
20478029A · Nov 3
£1,978 GBP
$2,670 USD
View
18 more retailers have this diamond
Prices start from £363 GBPSave up to £1,615 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
1.53ct Round
£363 GBP