CaratHunter
Plans
Round|Lab Grown|IGI

1.25ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG624403540

Shape and cutting style on the report: Round brilliant

Certificate IGI LG624403540

Diamond specifications and retailer prices

From £190 GBP
$253 USD
As of October 29, 2026
Save £1,209 GBP (86%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,400 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG624403540 or 624403540. Listed at 23 retailers as of October 28, 2026, with prices from £190 to £1,400, a £1,209 spread on the same certified stone. Brilliant Earth lists it at £1,400. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG624403540
Dimensions6.89 × 6.85 × 4.27 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
6.89 mm6.85 mm1.25 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG624403540
Side View
Table 58.0%Crown 34.5°Girdle: ThickPavilion 41.2°Culet: NoneDepth 62.2%

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: Oct 29
Current: £1,400 GBP|Low: £187 GBP|High: £1,400 GBP|Avg: £541 GBP
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
Retailer 17
Retailer 18
October 29, 2026
Retailer 2£190 GBP
Retailer 13£213 GBP
Retailer 6£221 GBP
Retailer 4£236 GBP
Retailer 14£318 GBP
Retailer 17£357 GBP
Retailer 7£382 GBP
Retailer 15£405 GBP
Retailer 12£426 GBP
Retailer 11£434 GBP
Retailer 16£445 GBP
Retailer 18£511 GBP
Retailer 10£612 GBP
Retailer 3£758 GBP
Retailer 5£797 GBP
Retailer 9£888 GBP
Retailer 8£967 GBP
Brilliant Earth£1,400 GBP

34 data points across 18 retailers

23 retailers£190 GBP to £1,400 GBP

A
Cheapest Retailer
-
£190 GBP
$253 USD
A
Retailer 2
-
£213 GBP
$283 USD
View
Final sale: no returns
A
Retailer 3
-
£221 GBP
$293 USD
View
A
Retailer 4
-
£236 GBP
$313 USD
View
A
Retailer 5
-
£241 GBP
$320 USD
View
A
Retailer 6
-
£318 GBP
$422 USD
View
A
Retailer 7
-
£357 GBP
$475 USD
View
A
Retailer 8
-
£382 GBP
View
A
Retailer 9
-
£405 GBP
ZAR 8,696 ZAR
View
A
Retailer 10
-
£426 GBP
$566 USD
View
A
Retailer 11
-
£434 GBP
€549 EUR
View
A
Retailer 12
-
£445 GBP
View
B+
Retailer 13
-
£511 GBP
$679 USD
View
B+
Retailer 14
-
£518 GBP
A$1,058 AUD
View
Price last confirmed 155 days ago
B+
Retailer 15
-
£612 GBP
$813 USD
View
B
Retailer 16
-
£758 GBP
$1,007 USD
View
B
Retailer 17
-
£797 GBP
$1,059 USD
View
B
Retailer 18
-
£847 GBP
$1,125 USD
View
B
Retailer 19
-
£888 GBP
$1,180 USD
View
Price last confirmed 11 days ago
B
Retailer 20
-
£929 GBP
$1,234 USD
View
Price last confirmed 73 days ago
B
Retailer 21
-
£967 GBP
View
B
Retailer 22
-
£1,400 GBP
$1,860 USD
View
Most Expensive
B
Brilliant Earth
14227329A · Oct 28
£1,400 GBP
$1,860 USD
View
22 more retailers have this diamond
Prices start from £190 GBPSave up to £1,209 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
1.25ct Round
£190 GBP