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Heart|Lab Grown|IGI

1.71ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG830620123

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG830620123

Diamond specifications and retailer prices

From $1,425 AUD
£788 GBP
As of November 1, 2026
Save $4,354 AUD (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,780 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.71ct lab-grown heart diamond

This 1.71ct 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 very-good cut grade and certified by IGI LG830620123 or 830620123. Listed at 8 retailers as of October 31, 2026, with prices from $1,425 to $5,780, a $4,354 spread on the same certified stone. Brilliant Earth lists it at $5,780. 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

1.71
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830620123
Dimensions7.42 × 8.32 × 4.78 mm
L/W Ratio1.12
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
7.42 mm8.32 mm1.71 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830620123
Side View
Table 56.0%Crown 37.3°Girdle: STK-THKPavilion 38.3°Culet: NoneDepth 57.5%

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: Nov 1
Current: $5,780 AUD|Low: $1,425 AUD|High: $7,801 AUD|Avg: $3,352 AUD|-25.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2$1,425 AUD
Retailer 3$1,932 AUD
Retailer 8$2,020 AUD
Retailer 5$2,040 AUD
Retailer 4$2,998 AUD
Retailer 7$4,353 AUD
Retailer 6$5,141 AUD
Brilliant Earth$5,780 AUD

4 data points across 8 retailers

8 retailers$1,425 AUD to $5,780 AUD

A
Cheapest Retailer
-
$1,425 AUD
£788 GBP
B+
Retailer 2
-
$1,932 AUD
£1,069 GBP
View
B+
Retailer 3
-
$2,020 AUD
$1,419 USD
View
B+
Retailer 4
-
$2,040 AUD
$1,433 USD
View
B
Retailer 5
-
$2,998 AUD
$2,106 USD
View
B
Retailer 6
-
$4,353 AUD
$3,058 USD
View
B
Retailer 7
-
$5,141 AUD
$3,611 USD
View
Most Expensive
B
Brilliant Earth
22348642A · Oct 31
$5,780 AUD
$4,060 USD
View
7 more retailers have this diamond
Prices start from $1,425 AUDSave up to $4,354 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
1.71ct Heart
$1,425 AUD