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Heart|Lab Grown|IGI

12.80ct G VS1 Heart Lab Grown Diamond

ID • G/VS1 • IGI LG617449446

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG617449446

Diamond specifications and retailer prices

From HK$41,379 HKD
£4,153 GBP
As of November 2, 2026
Save HK$140,109 HKD (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$181,488 HKD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 12.8ct lab-grown heart diamond

This 12.8ct 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 LG617449446 or 617449446. Listed at 21 retailers as of October 31, 2026, with prices from HK$41,379 to HK$181,488, a HK$140,109 spread on the same certified stone. Taylor and Hart lists it at HK$181,488. 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

12.80
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG617449446
Dimensions15.99 × 14.40 × 9.42 mm
L/W Ratio1.11
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
15.99 mm14.40 mm12.80 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG617449446
Side View
Table 59.0%Crown 37.1°Girdle: MED-THKPavilion 39.9°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 2
Current: HK$65,537 HKD|Low: HK$41,366 HKD|High: HK$130,842 HKD|Avg: HK$66,461 HKD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 3, 2026
Retailer 12HK$41,379 HKD
Retailer 4HK$44,417 HKD
Retailer 2HK$46,551 HKD
Retailer 9HK$49,736 HKD
Retailer 8HK$50,348 HKD
Retailer 7HK$51,525 HKD
Retailer 15HK$51,525 HKD
Retailer 5HK$51,549 HKD
Retailer 10HK$58,979 HKD
Retailer 16HK$61,160 HKD
Retailer 1HK$65,537 HKD
Retailer 6HK$79,552 HKD
Retailer 14HK$79,753 HKD
Retailer 17HK$84,016 HKD
Retailer 11HK$84,534 HKD
Retailer 3HK$97,331 HKD
Retailer 13HK$98,297 HKD

39 data points across 17 retailers

21 retailersHK$41,379 HKD to HK$181,488 HKD

A
Cheapest Retailer
-
HK$41,379 HKD
£4,153 GBP
A
Retailer 2
-
HK$44,417 HKD
$5,661 USD
View
A
Retailer 3
-
HK$46,551 HKD
$5,933 USD
View
B+
Retailer 4
-
HK$49,736 HKD
$6,339 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$50,348 HKD
$6,417 USD
View
Retailer 6
-
HK$51,525 HKD
$6,567 USD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
HK$51,525 HKD
$6,567 USD
View
A
Retailer 8
-
HK$51,549 HKD
$6,570 USD
View
B+
Retailer 9
-
HK$58,979 HKD
$7,517 USD
View
B+
Retailer 10
-
HK$61,160 HKD
$7,795 USD
View
B+
Retailer 11
-
HK$65,537 HKD
£6,577 GBP
View
Retailer 12
-
HK$65,805 HKD
$8,387 USD
View
Price last confirmed 19 days ago
B
Retailer 13
-
HK$79,552 HKD
$10,139 USD
View
B+
Retailer 14
-
HK$79,753 HKD
ZAR 164,211 ZAR
View
B
Retailer 15
-
HK$84,016 HKD
$10,708 USD
View
B
Retailer 16
-
HK$84,534 HKD
€10,261 EUR
View
B
Retailer 17
-
HK$97,331 HKD
$12,405 USD
View
B
Retailer 18
-
HK$98,297 HKD
A$19,274 AUD
View
B
Retailer 19
-
HK$123,984 HKD
$15,802 USD
View
B
Retailer 20
-
HK$143,316 HKD
$18,266 USD
View
Most Expensive
B
Taylor and Hart
8BL32P5 · Oct 31
HK$181,488 HKD
$23,131 USD
View
20 more retailers have this diamond
Prices start from HK$41,379 HKDSave up to HK$140,109 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
12.80ct Heart
HK$41,379 HKD