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Heart|Lab Grown|IGI

12.31ct G VS1 Heart Lab Grown Diamond

ID • G/VS1 • IGI LG720520483

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG720520483

Diamond specifications and retailer prices

From HK$33,699 HKD
$4,295 USD
As of November 3, 2026
Save HK$133,666 HKD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$167,365 HKD at With Clarity · As of November 2, 2026
View at With Clarity

About this 12.31ct lab-grown heart diamond

This 12.31ct lab-grown heart sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG720520483 or 720520483. Listed at 18 retailers as of November 2, 2026, with prices from HK$33,699 to HK$167,365, a HK$133,666 spread on the same certified stone. With Clarity lists it at HK$167,365. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

12.31
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720520483
Dimensions14.26 × 15.98 × 8.97 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.26 mm15.98 mm12.31 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG720520483
Side View
Table 59.0%Crown 36°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 56.1%

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 3
Current: HK$41,529 HKD|Low: HK$27,885 HKD|High: HK$167,365 HKD|Avg: HK$53,252 HKD|-3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
November 2, 2026
Retailer 10HK$29,046 HKD
Retailer 3HK$33,691 HKD
Retailer 8HK$33,699 HKD
Retailer 4HK$35,268 HKD
Retailer 7HK$36,123 HKD
Retailer 1HK$41,529 HKD
Retailer 5HK$44,055 HKD
Retailer 11HK$48,685 HKD
Retailer 9HK$52,143 HKD
Retailer 6HK$63,127 HKD
Retailer 2HK$80,987 HKD
Retailer 12HK$109,453 HKD
With ClarityHK$167,365 HKD

36 data points across 13 retailers

18 retailersHK$33,699 HKD to HK$167,365 HKD

Retailer 1
-
HK$31,596 HKD
$4,027 USD
Price last confirmed 35 days ago
Retailer 2
-
HK$33,691 HKD
$4,294 USD
View
Price last confirmed 30 days ago
A
Retailer 3
-
HK$33,699 HKD
$4,295 USD
View
A
Retailer 4
-
HK$35,268 HKD
$4,495 USD
View
A
Retailer 5
-
HK$36,123 HKD
$4,604 USD
View
Final sale: no returns
A
Retailer 6
-
HK$41,529 HKD
$5,293 USD
View
Retailer 7
-
HK$42,102 HKD
$5,366 USD
View
Price last confirmed 33 days ago
A
Retailer 8
-
HK$44,055 HKD
£4,421 GBP
View
A
Retailer 9
-
HK$48,685 HKD
$6,205 USD
View
B+
Retailer 10
-
HK$52,143 HKD
ZAR 107,363 ZAR
View
B+
Retailer 11
-
HK$63,127 HKD
A$12,378 AUD
View
B+
Retailer 12
-
HK$73,471 HKD
$9,364 USD
View
B
Retailer 13
-
HK$80,987 HKD
$10,322 USD
View
B
Retailer 14
-
HK$84,808 HKD
$10,809 USD
View
B
Retailer 15
-
HK$93,529 HKD
$11,921 USD
View
B
Retailer 16
-
HK$109,453 HKD
$13,950 USD
View
B
Retailer 17
-
HK$118,967 HKD
$15,163 USD
View
Most Expensive
B
With Clarity
720520483 · Nov 2
HK$167,365 HKD
$21,331 USD
View
17 more retailers have this diamond
Prices start from HK$33,699 HKDSave up to HK$133,666 HKD

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
12.31ct Heart
HK$33,699 HKD