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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 $1,004 USD
£791 GBP
As of October 30, 2026
Save $3,056 USD (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,060 USD at Brilliant Earth · As of October 30, 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 30, 2026, with prices from $1,004 to $4,060, a $3,056 spread on the same certified stone. Brilliant Earth lists it at $4,060. 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
Color
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: Oct 30
Current: $4,060 USD|Low: $1,004 USD|High: $5,480 USD|Avg: $2,401 USD|-25.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5$1,004 USD
Retailer 2$1,357 USD
Retailer 8$1,419 USD
Retailer 4$1,433 USD
Retailer 3$2,106 USD
Retailer 7$3,058 USD
Retailer 6$3,611 USD
Brilliant Earth$4,060 USD

3 data points across 8 retailers

8 retailers$1,004 USD to $4,060 USD

A
Cheapest Retailer
-
$1,004 USD
£791 GBP
B+
Retailer 2
-
$1,357 USD
£1,069 GBP
View
B+
Retailer 3
-
$1,419 USD
View
B+
Retailer 4
-
$1,433 USD
View
B
Retailer 5
-
$2,106 USD
View
B
Retailer 6
-
$3,058 USD
View
B
Retailer 7
-
$3,611 USD
View
Most Expensive
B
Brilliant Earth
22348642A · Oct 30
$4,060 USD
View
7 more retailers have this diamond
Prices start from $1,004 USDSave up to $3,056 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
1.71ct Heart
$1,004 USD