CaratHunter
Plans
Heart|Lab Grown|IGI

1.68ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG818641476

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818641476

Diamond specifications and retailer prices

From £466 GBP
$625 USD
As of October 30, 2026
Save £3,676 GBP (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,142 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.68ct lab-grown heart diamond

This 1.68ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818641476 or 818641476. Listed at 11 retailers as of October 30, 2026, with prices from £466 to £4,142, a £3,676 spread on the same certified stone. Do Amore Diamonds lists it at £4,142. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.68
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818641476
Dimensions7.68 × 8.27 × 4.59 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
7.68 mm8.27 mm1.68 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818641476
Side View
Table 63.0%Crown 33.3°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 55.5%

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 30
Current: £4,142 GBP|Low: £466 GBP|High: £5,963 GBP|Avg: £1,962 GBP|-30.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 7£466 GBP
Retailer 12£522 GBP
Retailer 2£694 GBP
Retailer 3£790 GBP
Retailer 8£885 GBP
Retailer 6£1,009 GBP
Retailer 9£1,382 GBP
Retailer 10£1,679 GBP
Retailer 11£2,349 GBP
Retailer 5£2,941 GBP
Do Amore Diamonds£4,142 GBP
Retailer 4£4,354 GBP

25 data points across 12 retailers

11 retailers£466 GBP to £4,142 GBP

A
Cheapest Retailer
-
£466 GBP
$625 USD
A
Retailer 2
-
£522 GBP
$700 USD
View
A
Retailer 3
-
£694 GBP
$930 USD
View
A
Retailer 4
-
£790 GBP
$1,058 USD
View
A
Retailer 5
-
£885 GBP
$1,186 USD
View
B+
Retailer 6
-
£1,009 GBP
€1,288 EUR
View
B+
Retailer 7
-
£1,382 GBP
$1,852 USD
View
B
Retailer 8
-
£1,679 GBP
$2,250 USD
View
B
Retailer 9
-
£2,349 GBP
View
B
Retailer 10
-
£2,941 GBP
$3,940 USD
View
Most Expensive
B
Do Amore Diamonds
27-16E4E631D · Oct 31
£4,142 GBP
$5,550 USD
View
10 more retailers have this diamond
Prices start from £466 GBPSave up to £3,676 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
1.68ct Heart
£466 GBP