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 $4,662 USD
As of October 29, 2026
Save $12,511 USD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $28,430 USD 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 29, 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
Color
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

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $28,430 USD|Low: $3,915 USD|High: $28,430 USD|Avg: $9,535 USD
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 29, 2026
Retailer 12$3,924 USD
Retailer 3$4,662 USD
Retailer 5$4,829 USD
Retailer 9$4,830 USD
Retailer 14$4,975 USD
Retailer 11$6,284 USD
Retailer 8$6,353 USD
Retailer 2$7,474 USD
Retailer 15$7,475 USD
Retailer 13$9,012 USD
Retailer 10$9,116 USD
Retailer 6$10,941 USD
Retailer 4$13,414 USD
Retailer 7$17,173 USD
Brilliant Earth$28,430 USD

17 data points across 15 retailers

15 retailers$4,662 USD to $17,173 USD

Retailer 1
-
$3,924 USD
£3,089 GBP
Price last confirmed 18 days ago
A
Retailer 2
-
$4,662 USD
View
Final sale: no returns
Retailer 3
-
$4,829 USD
View
Price last confirmed 19 days ago
A
Retailer 4
-
$4,830 USD
View
B+
Retailer 5
-
$4,975 USD
View
B+
Retailer 6
-
$6,284 USD
View
B+
Retailer 7
-
$6,353 USD
£5,003 GBP
View
B+
Retailer 8
-
$7,474 USD
ZAR 120,746 ZAR
View
B+
Retailer 9
-
$7,475 USD
View
B
Retailer 10
-
$9,012 USD
View
Retailer 11
-
$9,116 USD
A$14,025 AUD
View
Price last confirmed 7 days ago
B
Retailer 12
-
$10,941 USD
View
B
Retailer 13
-
$13,414 USD
View
B
Retailer 14
-
$17,173 USD
View
Most Expensive
Brilliant Earth
11953179A · Oct 30
$28,430 USD
View
Price under review
14 more retailers have this diamond
Prices start from $4,662 USDSave up to $12,511 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
12.28ct Heart
$4,662 USD