Heart|Lab Grown|IGI

1.09ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG818663190

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818663190

Diamond specifications and retailer prices

From $407 USD
As of October 30, 2026
Save $1,312 USD (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,027 USD at MOH London · As of October 11, 2026
View at MOH London

About this 1.09ct lab-grown heart diamond

This 1.09ct 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 LG818663190 or 818663190. Listed at 17 retailers as of October 30, 2026, with a 322% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663190
Dimensions6.35 × 7.16 × 4.09 mm
L/W Ratio1.13
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
6.35 mm7.16 mm1.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663190
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 57.1%

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: $2,027 USD|Low: $351 USD|High: $2,031 USD|Avg: $1,099 USD|+0.9%
MOH London
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 12$407 USD
Retailer 4$547 USD
Retailer 5$605 USD
Retailer 8$638 USD
Retailer 10$682 USD
Retailer 7$777 USD
Retailer 2$816 USD
Retailer 11$1,033 USD
Retailer 6$1,118 USD
Retailer 3$1,494 USD
Retailer 9$1,719 USD
MOH London$2,027 USD

34 data points across 12 retailers

17 retailers$407 USD to $1,719 USD

A
Cheapest Retailer
-
$407 USD
Final sale: no returns
Retailer 2
-
$440 USD
View
Price last confirmed 23 days ago
Retailer 3
-
$494 USD
View
Price last confirmed 33 days ago
Retailer 4
-
$540 USD
View
Price last confirmed 36 days ago
Retailer 5
-
$545 USD
View
Price last confirmed 28 days ago
Retailer 6
-
$545 USD
View
Price last confirmed 19 days ago
A
Retailer 7
-
$605 USD
View
B+
Retailer 8
-
$638 USD
View
B+
Retailer 9
-
$682 USD
View
B+
Retailer 10
-
$777 USD
ZAR 12,552 ZAR
View
B+
Retailer 11
-
$816 USD
£642 GBP
View
B+
Retailer 12
-
$1,033 USD
View
B+
Retailer 13
-
$1,118 USD
View
B
Retailer 14
-
$1,494 USD
View
B
Retailer 15
-
$1,719 USD
View
Retailer 16
-
$1,752 USD
View
Price last confirmed 27 days ago
Most Expensive
MOH London
LG818663190 · Oct 11
$2,027 USD
£1,596 GBP
View
Price last confirmed 20 days ago
16 more retailers have this diamond
Prices start from $407 USDSave up to $1,312 USD

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
1.09ct Heart
$407 USD