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Round|Lab Grown|IGI

1.51ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG816610502

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816610502

Diamond specifications and retailer prices

From £389 GBP
As of November 4, 2026
Save £2,159 GBP (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £2,548 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct 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 LG816610502 or 816610502. Listed at 23 retailers as of November 4, 2026, with prices from £389 to £2,548, a £2,159 spread on the same certified stone. Brilliant Earth lists it at £2,548. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816610502
Dimensions7.51 × 7.45 × 4.49 mm
L/W Ratio1.01
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
7.51 mm7.45 mm1.51 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816610502
Side View
Table 56.0%Crown 32.8°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
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 4
Current: £2,548 GBP|Low: £383 GBP|High: £2,956 GBP|Avg: £1,115 GBP|-13.6%
Brilliant Earth
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 4, 2026
Retailer 6£389 GBP
Retailer 12£537 GBP
Retailer 3£606 GBP
Retailer 16£658 GBP
Retailer 5£676 GBP
Retailer 11£705 GBP
Retailer 13£742 GBP
Retailer 15£990 GBP
Retailer 7£1,001 GBP
Retailer 2£1,211 GBP
Retailer 8£1,364 GBP
Retailer 9£1,448 GBP
Retailer 10£1,514 GBP
Retailer 4£1,519 GBP
Retailer 14£1,582 GBP
Brilliant Earth£2,548 GBP

36 data points across 16 retailers

23 retailers£389 GBP to £2,548 GBP

Retailer 1
-
£342 GBP
Price last confirmed 43 days ago
Retailer 2
-
£342 GBP
View
Price last confirmed 25 days ago
Retailer 3
-
£383 GBP
View
Price last confirmed 43 days ago
A
Retailer 4
-
£389 GBP
View
Final sale: no returns
Retailer 5
-
£419 GBP
View
Price last confirmed 41 days ago
Retailer 6
-
£424 GBP
View
Price last confirmed 33 days ago
Retailer 7
-
£424 GBP
View
Price last confirmed 23 days ago
A
Retailer 8
-
£537 GBP
View
A
Retailer 9
-
£606 GBP
View
B+
Retailer 10
-
£658 GBP
View
B+
Retailer 11
-
£676 GBP
View
B+
Retailer 12
-
£705 GBP
View
B+
Retailer 13
-
£742 GBP
View
B+
Retailer 14
-
£990 GBP
View
B
Retailer 15
-
£1,001 GBP
View
B+
Retailer 16
-
£1,211 GBP
View
Retailer 17
-
£1,364 GBP
View
Price last confirmed 28 days ago
Retailer 18
-
£1,364 GBP
View
Price last confirmed 44 days ago
B
Retailer 19
-
£1,448 GBP
View
B
Retailer 20
-
£1,514 GBP
View
B
Retailer 21
-
£1,519 GBP
View
B
Retailer 22
-
£1,582 GBP
View
Most Expensive
B
Brilliant Earth
21019166A · Nov 4
£2,548 GBP
$3,440 USD
View
22 more retailers have this diamond
Prices start from £389 GBPSave up to £2,159 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
1.51ct Round
£389 GBP