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Heart|Lab Grown|IGI

1.73ct G SI1 Heart Lab Grown Diamond

ID • G/SI1 • IGI LG539229329

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG539229329

Diamond specifications and retailer prices

From €1,199 EUR
$1,340 USD
As of October 31, 2026
Save €1,418 EUR (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,460 EUR at NZ Jewellers · As of November 1, 2026
View at NZ Jewellers

About this 1.73ct lab-grown heart diamond

This 1.73ct lab-grown heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG539229329 or 539229329. Listed at 12 retailers as of October 31, 2026, with a 118% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.73
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG539229329
Dimensions8.18 × 7.47 × 4.85 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.18 mm7.47 mm1.73 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG539229329
Side View
Table 62.5%Crown 36.3°Girdle: STK-VTKPavilion 38.7°Culet: NoneDepth 59.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €5,271 EUR|Low: €1,199 EUR|High: €5,342 EUR|Avg: €2,544 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3€1,199 EUR
Retailer 5€1,591 EUR
Retailer 8€1,780 EUR
Retailer 6€1,846 EUR
Retailer 9€1,996 EUR
Retailer 2€2,617 EUR
Retailer 7€2,896 EUR
Retailer 4€3,104 EUR
Retailer 1€5,271 EUR

42 data points across 9 retailers

12 retailers€1,199 EUR to €2,617 EUR

B
Cheapest Retailer
-
€1,199 EUR
$1,340 USD
B
Retailer 2
-
€1,591 EUR
$1,777 USD
View
B
Retailer 3
-
€1,731 EUR
$1,934 USD
View
B
Retailer 4
-
€1,780 EUR
$1,989 USD
View
Final sale: no returns
B
Retailer 5
-
€1,846 EUR
$2,062 USD
View
Retailer 6
-
€1,846 EUR
$2,062 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
€1,996 EUR
$2,230 USD
View
B
Retailer 8
-
€2,617 EUR
£2,302 GBP
View
Retailer 9
-
€2,896 EUR
$3,235 USD
View
Price under review
Retailer 10
-
€3,104 EUR
$3,468 USD
View
Price under review
Most Expensive
NZ Jewellers
62f363ad-9986-41de-940e-37d6d1351228 · Nov 1
€3,460 EUR
$3,865 USD
View
Price under review
10 more retailers have this diamond
Prices start from €1,199 EURSave up to €1,418 EUR

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
1.73ct Heart
€1,199 EUR