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Heart|Lab Grown|IGI

1.16ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG846663659

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG846663659

Diamond specifications and retailer prices

From £280 GBP
$376 USD
As of November 1, 2026
Save £1,560 GBP (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,841 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.16ct lab-grown heart diamond

This 1.16ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846663659 or 846663659. Listed at 11 retailers as of November 1, 2026, with prices from £280 to £1,841, a £1,560 spread on the same certified stone. Brilliant Earth lists it at £1,841. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.16
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663659
Dimensions6.70 × 7.24 × 4.23 mm
L/W Ratio1.08
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
6.70 mm7.24 mm1.16 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663659
Side View
Table 57.0%Crown 33°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 58.4%

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 1
Current: £1,841 GBP|Low: £252 GBP|High: £1,841 GBP|Avg: £715 GBP|+16.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 5£280 GBP
Retailer 4£309 GBP
Retailer 9£414 GBP
Retailer 3£448 GBP
Retailer 7£487 GBP
Retailer 10£571 GBP
Retailer 2£879 GBP
Retailer 8£964 GBP
Retailer 6£1,201 GBP
Retailer 11£1,206 GBP
Brilliant Earth£1,841 GBP

7 data points across 11 retailers

11 retailers£280 GBP to £1,841 GBP

A
Cheapest Retailer
-
£280 GBP
$376 USD
A
Retailer 2
-
£309 GBP
View
A
Retailer 3
-
£414 GBP
$555 USD
View
A
Retailer 4
-
£448 GBP
€572 EUR
View
B+
Retailer 5
-
£487 GBP
$653 USD
View
B+
Retailer 6
-
£571 GBP
$766 USD
View
B
Retailer 7
-
£879 GBP
$1,180 USD
View
B
Retailer 8
-
£964 GBP
$1,293 USD
View
B
Retailer 9
-
£1,201 GBP
View
B
Retailer 10
-
£1,206 GBP
$1,618 USD
View
Most Expensive
B
Brilliant Earth
22319254A · Nov 2
£1,841 GBP
$2,470 USD
View
10 more retailers have this diamond
Prices start from £280 GBPSave up to £1,560 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
1.16ct Heart
£280 GBP