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Heart|Lab Grown|IGI

1.73ct F VS1 Heart Lab Grown Diamond

EX • F/VS1 • IGI LG643421211

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG643421211

Diamond specifications and retailer prices

From $430 USD
As of November 1, 2026
Save $768 USD (64%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,284 USD at MOH London · As of October 25, 2026
View at MOH London

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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG643421211 or 643421211. Listed at 6 retailers as of October 31, 2026, with a 179% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
F
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.3°
Pavilion angle44.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG643421211
Dimensions7.08 × 8.32 × 4.90 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.08 mm8.32 mm1.73 ctF / VS1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG643421211
Side View
Table 63.0%Crown 37.3°Girdle: STK-VTKPavilion 44.6°Culet: NoneDepth 58.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,284 USD|Low: $392 USD|High: $1,312 USD|Avg: $725 USD|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4$430 USD
Retailer 6$506 USD
Retailer 7$520 USD
Retailer 3$550 USD
Retailer 2$611 USD
Retailer 5$1,198 USD
MOH London$1,284 USD

40 data points across 7 retailers

6 retailers$430 USD to $1,198 USD

B+
Cheapest Retailer
-
$430 USD
A
Retailer 2
-
$506 USD
View
A
Retailer 3
-
$550 USD
View
A
Retailer 4
-
$611 USD
£481 GBP
View
B
Retailer 5
-
$1,198 USD
View
Most Expensive
MOH London
LG643421211 · Oct 25
$1,284 USD
£1,011 GBP
View
Price last confirmed 8 days ago
5 more retailers have this diamond
Prices start from $430 USDSave up to $768 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
1.73ct Heart
$430 USD