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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 $2,417 NZD
As of November 6, 2026
Save $2,805 NZD (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,972 NZD at NZ Jewellers · As of November 6, 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 November 6, 2026, with a 116% 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $5,222 NZD|Low: $2,417 NZD|High: $10,764 NZD|Avg: $5,126 NZD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$2,417 NZD
Retailer 5$3,206 NZD
Retailer 8$3,588 NZD
Retailer 6$3,720 NZD
Retailer 9$4,023 NZD
Retailer 1$5,222 NZD
Retailer 7$5,836 NZD
Retailer 4$6,256 NZD
Retailer 2$10,593 NZD

45 data points across 9 retailers

12 retailers$2,417 NZD to $5,222 NZD

B
Cheapest Retailer
-
$2,417 NZD
B
Retailer 2
-
$3,206 NZD
View
B
Retailer 3
-
$3,489 NZD
View
B
Retailer 4
-
$3,588 NZD
View
Final sale: no returns
B
Retailer 5
-
$3,720 NZD
View
Retailer 6
-
$3,720 NZD
View
Price last confirmed 25 days ago
B
Retailer 7
-
$4,023 NZD
View
B
Retailer 8
-
$5,222 NZD
View
Retailer 9
-
$5,836 NZD
View
Price under review
Retailer 10
-
$6,256 NZD
View
Price under review
Most Expensive
NZ Jewellers
62f363ad-9986-41de-940e-37d6d1351228 · Nov 6
$6,972 NZD
$3,865 USD
View
Price under review
10 more retailers have this diamond
Prices start from $2,417 NZDSave up to $2,805 NZD

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
$2,417 NZD