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Heart|Lab Grown|IGI

1.03ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG666442800

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG666442800

Diamond specifications and retailer prices

From $346 USD
As of October 30, 2026
Save $1,332 USD (79%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,678 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.03ct lab-grown heart diamond

This 1.03ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG666442800 or 666442800. Listed at 21 retailers as of October 30, 2026, with prices from $346 to $1,678, a $1,332 spread on the same certified stone. MOH London lists it at $1,678. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666442800
Dimensions6.27 × 6.93 × 4.14 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
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
6.27 mm6.93 mm1.03 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666442800
Side View
Table 56.0%Crown 34.2°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 59.7%

Caratlytics Score

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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: $1,678 USD|Low: $332 USD|High: $1,697 USD|Avg: $798 USD
MOH London
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
November 2, 2026
Retailer 14$346 USD
Retailer 7$386 USD
Retailer 3$429 USD
Retailer 15$429 USD
Retailer 10$582 USD
Retailer 12$585 USD
Retailer 6$665 USD
Retailer 9$698 USD
Retailer 2$740 USD
Retailer 8$771 USD
Retailer 11$1,043 USD
Retailer 5$1,143 USD
Retailer 13$1,259 USD
Retailer 4$1,380 USD
MOH London$1,678 USD

44 data points across 15 retailers

21 retailers$346 USD to $1,678 USD

A
Cheapest Retailer
-
$346 USD
A
Retailer 2
-
$386 USD
View
Final sale: no returns
Retailer 3
-
$402 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$424 USD
View
Price last confirmed 36 days ago
A
Retailer 5
-
$429 USD
View
Retailer 6
-
$429 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$474 USD
HK$3,700 HKD
View
A
Retailer 8
-
$582 USD
View
B+
Retailer 9
-
$585 USD
View
B+
Retailer 10
-
$619 USD
View
B+
Retailer 11
-
$665 USD
View
B+
Retailer 12
-
$698 USD
€665 EUR
View
B+
Retailer 13
-
$740 USD
ZAR 11,957 ZAR
View
B+
Retailer 14
-
$771 USD
£607 GBP
View
B+
Retailer 15
-
$1,043 USD
A$1,604 AUD
View
B
Retailer 16
-
$1,143 USD
SGD 1,545 SGD
View
B
Retailer 17
-
$1,259 USD
View
B
Retailer 18
-
$1,380 USD
View
B
Retailer 19
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$1,422 USD
View
B
Retailer 20
-
$1,660 USD
View
Most Expensive
B
MOH London
LG666442800 · Nov 1
$1,678 USD
£1,321 GBP
View
20 more retailers have this diamond
Prices start from $346 USDSave up to $1,332 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
1.03ct Heart
$346 USD