CaratHunter
Plans
Heart|Lab Grown|IGI

1.25ct F VS1 Heart Lab Grown Diamond

ID • F/VS1 • IGI LG838656459

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG838656459

Diamond specifications and retailer prices

From £140 GBP
As of November 4, 2026
Save £720 GBP (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £860 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.25ct lab-grown heart diamond

This 1.25ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG838656459 or 838656459. Listed at 19 retailers as of November 4, 2026, with prices from £140 to £860, a £720 spread on the same certified stone. Reve Diamonds lists it at £860. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838656459
Dimensions6.51 × 7.69 × 4.38 mm
L/W Ratio1.18
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
6.51 mm7.69 mm1.25 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838656459
Side View
Table 60.0%Crown 35.8°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 57.0%

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 4
Current: £207 GBP|Low: £137 GBP|High: £860 GBP|Avg: £411 GBP|+0.4%
Retailer 1
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
Reve Diamonds
November 5, 2026
Retailer 4£140 GBP
Retailer 15£163 GBP
Retailer 10£170 GBP
Retailer 8£174 GBP
Retailer 5£181 GBP
Retailer 1£207 GBP
Retailer 16£300 GBP
Retailer 6£305 GBP
Retailer 11£312 GBP
Retailer 2£343 GBP
Retailer 3£414 GBP
Retailer 14£424 GBP
Retailer 13£455 GBP
Retailer 9£510 GBP
Retailer 18£559 GBP
Retailer 12£587 GBP
Retailer 7£599 GBP
Retailer 17£813 GBP
Reve Diamonds£860 GBP

32 data points across 19 retailers

19 retailers£140 GBP to £860 GBP

A
Cheapest Retailer
-
£140 GBP
A
Retailer 2
-
£163 GBP
View
Retailer 3
-
£170 GBP
View
Price last confirmed 11 days ago
A
Retailer 4
-
£174 GBP
View
A
Retailer 5
-
£181 GBP
View
Final sale: no returns
A
Retailer 6
-
£207 GBP
View
A
Retailer 7
-
£300 GBP
View
A
Retailer 8
-
£305 GBP
View
A
Retailer 9
-
£312 GBP
View
A
Retailer 10
-
£343 GBP
View
B+
Retailer 11
-
£414 GBP
View
B+
Retailer 12
-
£424 GBP
View
B+
Retailer 13
-
£455 GBP
View
Retailer 14
-
£510 GBP
View
Price last confirmed 9 days ago
B
Retailer 15
-
£559 GBP
View
B
Retailer 16
-
£587 GBP
View
B
Retailer 17
-
£599 GBP
View
B
Retailer 18
-
£813 GBP
View
Most Expensive
B
Reve Diamonds
CED692F16 · Nov 4
£860 GBP
$1,158 USD
View
18 more retailers have this diamond
Prices start from £140 GBPSave up to £720 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 Heart
£140 GBP