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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 $658 NZD
As of November 5, 2026
Save $3,883 NZD (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,541 NZD at Brilliant Earth · As of November 4, 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 4, 2026, with prices from $658 to $4,541, a $3,883 spread on the same certified stone. Brilliant Earth lists it at $4,541. 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

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: Nov 5
Current: $4,541 NZD|Low: $658 NZD|High: $4,808 NZD|Avg: $2,017 NZD|-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 5, 2026
Retailer 2$658 NZD
Retailer 7$749 NZD
Retailer 11$1,064 NZD
Retailer 4$1,105 NZD
Retailer 13$1,118 NZD
Retailer 6$1,284 NZD
Retailer 9$1,368 NZD
Retailer 5$1,809 NZD
Retailer 12$1,958 NZD
Retailer 8$2,422 NZD
Retailer 3$3,026 NZD
Retailer 10$3,099 NZD
Brilliant Earth$4,541 NZD

32 data points across 13 retailers

18 retailers$658 NZD to $4,541 NZD

A
Cheapest Retailer
-
$658 NZD
Final sale: no returns
Retailer 2
-
$742 NZD
View
Price last confirmed 28 days ago
A
Retailer 3
-
$749 NZD
View
Retailer 4
-
$828 NZD
View
Price last confirmed 37 days ago
Retailer 5
-
$921 NZD
View
Price last confirmed 33 days ago
Retailer 6
-
$921 NZD
View
Price last confirmed 24 days ago
B+
Retailer 7
-
$1,064 NZD
View
B+
Retailer 8
-
$1,105 NZD
View
B+
Retailer 9
-
$1,118 NZD
View
B+
Retailer 10
-
$1,284 NZD
View
B+
Retailer 11
-
$1,368 NZD
View
B+
Retailer 12
-
$1,809 NZD
View
B
Retailer 13
-
$1,958 NZD
View
B
Retailer 14
-
$2,422 NZD
View
Retailer 15
-
$2,959 NZD
View
Price last confirmed 31 days ago
B
Retailer 16
-
$3,026 NZD
View
B
Retailer 17
-
$3,099 NZD
View
Most Expensive
B
Brilliant Earth
21580679A · Nov 4
$4,541 NZD
$2,560 USD
View
17 more retailers have this diamond
Prices start from $658 NZDSave up to $3,883 NZD

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
$658 NZD