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Round|Lab Grown|IGI

1.51ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG674507997

Shape and cutting style on the report: Round brilliant

Certificate IGI LG674507997

Diamond specifications and retailer prices

From £287 GBP
$385 USD
As of November 1, 2026
Save £2,049 GBP (88%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £2,336 GBP at Brilliant Earth · As of October 31, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG674507997 or 674507997. Listed at 24 retailers as of October 31, 2026, with prices from £287 to £2,336, a £2,049 spread on the same certified stone. Brilliant Earth lists it at £2,336. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG674507997
Dimensions7.44 × 7.39 × 4.51 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
Top View
7.44 mm7.39 mm1.51 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG674507997
Side View
Table 56.0%Crown 34°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.8%

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 1
Current: £2,336 GBP|Low: £183 GBP|High: £2,336 GBP|Avg: £632 GBP|+1.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 11£183 GBP
Retailer 6£287 GBP
Retailer 19£299 GBP
Retailer 9£317 GBP
Retailer 12£453 GBP
Retailer 16£481 GBP
Retailer 7£505 GBP
Retailer 18£510 GBP
Retailer 3£513 GBP
Retailer 13£550 GBP
Retailer 14£572 GBP
Retailer 17£649 GBP
Retailer 8£736 GBP
Retailer 2£799 GBP
Retailer 5£1,058 GBP
Retailer 10£1,198 GBP
Retailer 4£1,236 GBP
Retailer 15£1,247 GBP
Brilliant Earth£2,336 GBP

27 data points across 19 retailers

24 retailers£287 GBP to £2,336 GBP

Retailer 1
-
£183 GBP
$245 USD
Price last confirmed 15 days ago
Retailer 2
-
£246 GBP
$329 USD
View
Price last confirmed 25 days ago
A
Retailer 3
-
£287 GBP
$385 USD
View
Final sale: no returns
Retailer 4
-
£296 GBP
$397 USD
View
Price last confirmed 24 days ago
A
Retailer 5
-
£299 GBP
$400 USD
View
Retailer 6
-
£317 GBP
$425 USD
View
Price last confirmed 31 days ago
Retailer 7
-
£317 GBP
$425 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
£453 GBP
View
A
Retailer 9
-
£481 GBP
$645 USD
View
A
Retailer 10
-
£505 GBP
€644 EUR
View
A
Retailer 11
-
£510 GBP
$683 USD
View
A
Retailer 12
-
£513 GBP
$688 USD
View
A
Retailer 13
-
£550 GBP
ZAR 11,913 ZAR
View
B+
Retailer 14
-
£572 GBP
View
B+
Retailer 15
-
£649 GBP
$870 USD
View
B+
Retailer 16
-
£736 GBP
A$1,517 AUD
View
B+
Retailer 17
-
£799 GBP
$1,071 USD
View
Retailer 18
-
£1,019 GBP
$1,365 USD
View
Price last confirmed 25 days ago
B
Retailer 19
-
£1,058 GBP
$1,417 USD
View
B
Retailer 20
-
£1,198 GBP
$1,605 USD
View
B
Retailer 21
-
£1,236 GBP
$1,656 USD
View
B
Retailer 22
-
£1,247 GBP
View
Retailer 23
-
£1,488 GBP
$1,994 USD
View
Price last confirmed 67 days ago
Most Expensive
B
Brilliant Earth
14081461A · Oct 31
£2,336 GBP
$3,130 USD
View
23 more retailers have this diamond
Prices start from £287 GBPSave up to £2,049 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
£287 GBP