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Heart|Lab Grown|IGI

1.71ct I SI2 Heart Lab Grown Diamond

GD • I/SI2 • IGI LG436044977

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG436044977

Diamond specifications and retailer prices

From $421 USD
As of November 6, 2026
Save $1,408 USD (77%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,829 USD at MOH London · As of November 3, 2026
View at MOH London

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 I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI LG436044977 or 436044977. Listed at 5 retailers as of November 3, 2026, with prices from $421 to $1,829, a $1,408 spread on the same certified stone. MOH London lists it at $1,829. 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
I
Color
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436044977
Dimensions6.91 × 6.85 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.91 mm6.85 mm1.71 ctI / SI2
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436044977
Side View
Table 61.0%Crown 34.3°Girdle: STK-VTKPavilion 40.2°Culet: NoneDepth 66.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,829 USD|Low: $421 USD|High: $1,850 USD|Avg: $972 USD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 5$421 USD
Retailer 2$468 USD
Retailer 4$721 USD
Retailer 3$746 USD
Retailer 6$1,515 USD
MOH London$1,829 USD

9 data points across 6 retailers

5 retailers$421 USD to $1,829 USD

B+
Cheapest Retailer
-
$421 USD
Final sale: no returns
Retailer 2
-
$468 USD
View
Price last confirmed 12 days ago
B+
Retailer 3
-
$721 USD
View
B+
Retailer 4
-
$746 USD
View
Most Expensive
B
MOH London
436044977 · Nov 3
$1,829 USD
£1,440 GBP
View
4 more retailers have this diamond
Prices start from $421 USDSave up to $1,408 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.

B+
1.71ct Heart
$421 USD