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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 $9,373 NZD
£4,153 GBP
As of November 2, 2026
Save $31,737 NZD (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $41,111 NZD 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 $9,373 to $41,111, a $31,737 spread on the same certified stone. Taylor and Hart lists it at $41,111. 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: $14,845 NZD|Low: $9,370 NZD|High: $29,638 NZD|Avg: $15,055 NZD|-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 12$9,373 NZD
Retailer 4$10,061 NZD
Retailer 2$10,545 NZD
Retailer 9$11,266 NZD
Retailer 8$11,405 NZD
Retailer 7$11,672 NZD
Retailer 15$11,672 NZD
Retailer 5$11,677 NZD
Retailer 10$13,360 NZD
Retailer 16$13,854 NZD
Retailer 1$14,845 NZD
Retailer 6$18,020 NZD
Retailer 14$18,066 NZD
Retailer 17$19,031 NZD
Retailer 11$19,149 NZD
Retailer 3$22,047 NZD
Retailer 13$22,266 NZD

39 data points across 17 retailers

21 retailers$9,373 NZD to $41,111 NZD

A
Cheapest Retailer
-
$9,373 NZD
£4,153 GBP
A
Retailer 2
-
$10,061 NZD
$5,661 USD
View
A
Retailer 3
-
$10,545 NZD
$5,933 USD
View
B+
Retailer 4
-
$11,266 NZD
$6,339 USD
View
Final sale: no returns
B+
Retailer 5
-
$11,405 NZD
$6,417 USD
View
Retailer 6
-
$11,672 NZD
$6,567 USD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$11,672 NZD
$6,567 USD
View
A
Retailer 8
-
$11,677 NZD
$6,570 USD
View
B+
Retailer 9
-
$13,360 NZD
$7,517 USD
View
B+
Retailer 10
-
$13,854 NZD
$7,795 USD
View
B+
Retailer 11
-
$14,845 NZD
£6,577 GBP
View
Retailer 12
-
$14,906 NZD
$8,387 USD
View
Price last confirmed 20 days ago
B
Retailer 13
-
$18,020 NZD
$10,139 USD
View
B+
Retailer 14
-
$18,066 NZD
ZAR 164,211 ZAR
View
B
Retailer 15
-
$19,031 NZD
$10,708 USD
View
B
Retailer 16
-
$19,149 NZD
€10,261 EUR
View
B
Retailer 17
-
$22,047 NZD
$12,405 USD
View
B
Retailer 18
-
$22,266 NZD
A$19,274 AUD
View
B
Retailer 19
-
$28,085 NZD
$15,802 USD
View
B
Retailer 20
-
$32,464 NZD
$18,266 USD
View
Most Expensive
B
Taylor and Hart
8BL32P5 · Oct 31
$41,111 NZD
$23,131 USD
View
20 more retailers have this diamond
Prices start from $9,373 NZDSave up to $31,737 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.

A
12.80ct Heart
$9,373 NZD