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Heart|Lab Grown|IGI

1.26ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG836619993

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836619993

Diamond specifications and retailer prices

From £263 GBP
$352 USD
As of October 30, 2026
Save £1,708 GBP (87%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,970 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.26ct lab-grown heart diamond

This 1.26ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836619993 or 836619993. Listed at 18 retailers as of October 30, 2026, with prices from £263 to £1,970, a £1,708 spread on the same certified stone. Brilliant Earth lists it at £1,970. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.26
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619993
Dimensions6.66 × 7.31 × 4.21 mm
L/W Ratio1.10
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
6.66 mm7.31 mm1.26 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619993
Side View
Table 57.0%Crown 36.9°Girdle: MED-STKPavilion 36.8°Culet: NoneDepth 57.6%

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: Oct 30
Current: £1,970 GBP|Low: £263 GBP|High: £2,552 GBP|Avg: £832 GBP|-22.8%
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
November 1, 2026
Retailer 7£263 GBP
Retailer 18£305 GBP
Retailer 4£312 GBP
Retailer 15£325 GBP
Retailer 17£325 GBP
Retailer 14£440 GBP
Retailer 12£515 GBP
Retailer 8£522 GBP
Retailer 13£559 GBP
Retailer 11£586 GBP
Retailer 3£642 GBP
Retailer 9£811 GBP
Retailer 16£1,046 GBP
Retailer 6£1,077 GBP
Retailer 10£1,176 GBP
Retailer 2£1,272 GBP
Retailer 5£1,353 GBP
Brilliant Earth£1,970 GBP

35 data points across 18 retailers

18 retailers£263 GBP to £1,970 GBP

A
Cheapest Retailer
-
£263 GBP
$352 USD
A
Retailer 2
-
£305 GBP
$408 USD
View
A
Retailer 3
-
£312 GBP
$418 USD
View
Final sale: no returns
A
Retailer 4
-
£325 GBP
$436 USD
View
Retailer 5
-
£325 GBP
$436 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
£440 GBP
$590 USD
View
A
Retailer 7
-
£515 GBP
€657 EUR
View
A
Retailer 8
-
£522 GBP
$699 USD
View
A
Retailer 9
-
£559 GBP
ZAR 12,107 ZAR
View
A
Retailer 10
-
£586 GBP
View
B+
Retailer 11
-
£642 GBP
$860 USD
View
B+
Retailer 12
-
£811 GBP
$1,086 USD
View
B+
Retailer 13
-
£1,046 GBP
$1,402 USD
View
B+
Retailer 14
-
£1,077 GBP
$1,444 USD
View
B+
Retailer 15
-
£1,176 GBP
SGD 2,130 SGD
View
B+
Retailer 16
-
£1,272 GBP
View
B
Retailer 17
-
£1,353 GBP
$1,813 USD
View
Most Expensive
B
Brilliant Earth
21588995A · Oct 31
£1,970 GBP
$2,640 USD
View
17 more retailers have this diamond
Prices start from £263 GBPSave up to £1,708 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
1.26ct Heart
£263 GBP