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Heart|Lab Grown|IGI

12.28ct E VS1 Heart Lab Grown Diamond

ID • E/VS1 • IGI LG659441285

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG659441285

Diamond specifications and retailer prices

From $8,272 NZD
$4,662 USD
As of October 31, 2026
Save $22,199 NZD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $50,443 NZD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 12.28ct lab-grown heart diamond

This 12.28ct lab-grown heart sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG659441285 or 659441285. Listed at 15 retailers as of October 31, 2026, with a 268% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

12.28
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659441285
Dimensions16.22 × 14.13 × 9.42 mm
L/W Ratio1.15
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.22 mm14.13 mm12.28 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG659441285
Side View
Table 56.0%Crown 36.1°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 58.1%

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: Oct 31
Current: $50,443 NZD|Low: $6,946 NZD|High: $50,443 NZD|Avg: $16,887 NZD
Brilliant Earth
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
October 31, 2026
Retailer 12$6,962 NZD
Retailer 3$8,272 NZD
Retailer 5$8,568 NZD
Retailer 9$8,570 NZD
Retailer 14$8,827 NZD
Retailer 11$11,150 NZD
Retailer 2$11,179 NZD
Retailer 8$13,261 NZD
Retailer 15$13,263 NZD
Retailer 13$15,990 NZD
Retailer 10$16,175 NZD
Retailer 6$19,413 NZD
Retailer 4$23,801 NZD
Retailer 7$30,470 NZD
Brilliant Earth$50,443 NZD

18 data points across 15 retailers

15 retailers$8,272 NZD to $30,470 NZD

Retailer 1
-
$6,962 NZD
£3,089 GBP
Price last confirmed 19 days ago
A
Retailer 2
-
$8,272 NZD
$4,662 USD
View
Final sale: no returns
Retailer 3
-
$8,568 NZD
$4,829 USD
View
Price last confirmed 20 days ago
A
Retailer 4
-
$8,570 NZD
$4,830 USD
View
B+
Retailer 5
-
$8,827 NZD
$4,975 USD
View
B+
Retailer 6
-
$11,150 NZD
$6,284 USD
View
B+
Retailer 7
-
$11,179 NZD
£4,961 GBP
View
B+
Retailer 8
-
$13,261 NZD
ZAR 120,746 ZAR
View
B+
Retailer 9
-
$13,263 NZD
$7,475 USD
View
B
Retailer 10
-
$15,990 NZD
$9,012 USD
View
Retailer 11
-
$16,175 NZD
A$14,025 AUD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$19,413 NZD
$10,941 USD
View
B
Retailer 13
-
$23,801 NZD
$13,414 USD
View
B
Retailer 14
-
$30,470 NZD
$17,173 USD
View
Most Expensive
Brilliant Earth
11953179A · Oct 30
$50,443 NZD
$28,430 USD
View
Price under review
14 more retailers have this diamond
Prices start from $8,272 NZDSave up to $22,199 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
12.28ct Heart
$8,272 NZD