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Heart|Lab Grown|IGI

1.69ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG846662429

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG846662429

Diamond specifications and retailer prices

From £681 GBP
As of October 30, 2026
Save £3,484 GBP (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,165 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.69ct lab-grown heart diamond

This 1.69ct 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 LG846662429 or 846662429. Listed at 10 retailers as of October 29, 2026, with prices from £681 to £4,165, a £3,484 spread on the same certified stone. Do Amore Diamonds lists it at £4,165. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.69
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662429
Dimensions8.05 × 7.57 × 4.87 mm
L/W Ratio1.06
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
8.05 mm7.57 mm1.69 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662429
Side View
Table 58.0%Crown 35.6°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 60.5%

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: £4,165 GBP|Low: £680 GBP|High: £4,754 GBP|Avg: £1,842 GBP|-12.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 3£681 GBP
Retailer 6£694 GBP
Retailer 10£798 GBP
Retailer 7£890 GBP
Retailer 4£1,015 GBP
Retailer 8£1,390 GBP
Retailer 9£1,804 GBP
Retailer 5£2,371 GBP
Retailer 2£2,963 GBP
Do Amore Diamonds£4,165 GBP

13 data points across 10 retailers

10 retailers£681 GBP to £4,165 GBP

A
Cheapest Retailer
-
£681 GBP
A
Retailer 2
-
£694 GBP
$930 USD
View
A
Retailer 3
-
£798 GBP
$1,069 USD
View
A
Retailer 4
-
£890 GBP
$1,193 USD
View
A
Retailer 5
-
£1,015 GBP
€1,295 EUR
View
B+
Retailer 6
-
£1,390 GBP
$1,862 USD
View
B
Retailer 7
-
£1,804 GBP
$2,417 USD
View
B
Retailer 8
-
£2,371 GBP
View
B
Retailer 9
-
£2,963 GBP
$3,970 USD
View
Most Expensive
B
Do Amore Diamonds
27-76C779F08 · Oct 29
£4,165 GBP
$5,580 USD
View
9 more retailers have this diamond
Prices start from £681 GBPSave up to £3,484 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
1.69ct Heart
£681 GBP