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Heart|Lab Grown|IGI

1.71ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG818683416

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818683416

Diamond specifications and retailer prices

From $636 USD
As of October 30, 2026
Save $5,004 USD (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,640 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 top-tier cut grade and certified by IGI LG818683416 or 818683416. Listed at 14 retailers as of October 29, 2026, with prices from $636 to $5,640, a $5,004 spread on the same certified stone. Do Amore Diamonds lists it at $5,640. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818683416
Dimensions8.00 × 7.47 × 4.88 mm
L/W Ratio1.07
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
8.00 mm7.47 mm1.71 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818683416
Side View
Table 57.0%Crown 35°Girdle: STK-THKPavilion 41.3°Culet: NoneDepth 61.0%

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: $5,640 USD|Low: $636 USD|High: $8,130 USD|Avg: $2,502 USD|-30.6%
Do Amore Diamonds
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
October 30, 2026
Retailer 10$636 USD
Retailer 3$692 USD
Retailer 13$900 USD
Retailer 5$940 USD
Retailer 6$1,091 USD
Retailer 12$1,206 USD
Retailer 8$1,376 USD
Retailer 4$1,449 USD
Retailer 14$1,883 USD
Retailer 15$2,288 USD
Retailer 9$3,213 USD
Retailer 11$3,370 USD
Retailer 2$4,020 USD
Retailer 7$4,780 USD
Do Amore Diamonds$5,640 USD

23 data points across 15 retailers

14 retailers$636 USD to $5,640 USD

A
Cheapest Retailer
-
$636 USD
A
Retailer 2
-
$692 USD
View
A
Retailer 3
-
$900 USD
View
A
Retailer 4
-
$940 USD
View
A
Retailer 5
-
$1,091 USD
View
A
Retailer 6
-
$1,206 USD
View
B+
Retailer 7
-
$1,376 USD
€1,310 EUR
View
Retailer 8
-
$1,449 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$1,883 USD
View
B
Retailer 10
-
$2,288 USD
View
B+
Retailer 11
-
$3,213 USD
£2,530 GBP
View
B
Retailer 12
-
$3,370 USD
View
B
Retailer 13
-
$4,020 USD
View
Most Expensive
B
Do Amore Diamonds
27-080828369 · Oct 29
$5,640 USD
View
13 more retailers have this diamond
Prices start from $636 USDSave up to $5,004 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
$636 USD