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Heart|Lab Grown|IGI

1.03ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG818658618

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818658618

Diamond specifications and retailer prices

From $577 AUD
$403 USD
As of November 3, 2026
Save $3,089 AUD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,666 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG818658618 or 818658618. Listed at 18 retailers as of November 2, 2026, with prices from $577 to $3,666, a $3,089 spread on the same certified stone. Brilliant Earth lists it at $3,666. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818658618
Dimensions6.12 × 6.91 × 4.10 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
6.12 mm6.91 mm1.03 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818658618
Side View
Table 56.0%Crown 38.7°Girdle: STK-THKPavilion 38.1°Culet: NoneDepth 59.3%

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: Nov 3
Current: $3,666 AUD|Low: $577 AUD|High: $3,880 AUD|Avg: $1,637 AUD|-5.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 4$577 AUD
Retailer 6$659 AUD
Retailer 9$859 AUD
Retailer 13$892 AUD
Retailer 11$902 AUD
Retailer 7$1,104 AUD
Retailer 2$1,154 AUD
Retailer 3$1,461 AUD
Retailer 10$1,581 AUD
Retailer 5$2,116 AUD
Retailer 12$2,443 AUD
Retailer 8$2,502 AUD
Brilliant Earth$3,666 AUD

30 data points across 13 retailers

18 retailers$577 AUD to $3,666 AUD

A
Cheapest Retailer
-
$577 AUD
$403 USD
Final sale: no returns
Retailer 2
-
$599 AUD
$418 USD
View
Price last confirmed 26 days ago
A
Retailer 3
-
$659 AUD
£362 GBP
View
Retailer 4
-
$669 AUD
$467 USD
View
Price last confirmed 35 days ago
Retailer 5
-
$743 AUD
$519 USD
View
Price last confirmed 31 days ago
Retailer 6
-
$743 AUD
$519 USD
View
Price last confirmed 22 days ago
B+
Retailer 7
-
$859 AUD
$600 USD
View
B+
Retailer 8
-
$892 AUD
$623 USD
View
B+
Retailer 9
-
$902 AUD
$630 USD
View
B+
Retailer 10
-
$1,104 AUD
ZAR 12,456 ZAR
View
B+
Retailer 11
-
$1,154 AUD
£635 GBP
View
Retailer 12
-
$1,461 AUD
$1,020 USD
View
Price last confirmed 7 days ago
B
Retailer 13
-
$1,581 AUD
$1,104 USD
View
B
Retailer 14
-
$2,116 AUD
$1,478 USD
View
Retailer 15
-
$2,388 AUD
$1,668 USD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$2,443 AUD
$1,706 USD
View
B
Retailer 17
-
$2,502 AUD
£1,376 GBP
View
Most Expensive
B
Brilliant Earth
21580679A · Nov 2
$3,666 AUD
$2,560 USD
View
17 more retailers have this diamond
Prices start from $577 AUDSave up to $3,089 AUD

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
$577 AUD