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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 $5,960 SGD
$4,662 USD
As of October 31, 2026
Save $15,994 SGD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $36,345 SGD 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 30, 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

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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 31
Current: $36,345 SGD|Low: $5,005 SGD|High: $36,345 SGD|Avg: $12,167 SGD
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$5,016 SGD
Retailer 3$5,960 SGD
Retailer 5$6,173 SGD
Retailer 9$6,175 SGD
Retailer 14$6,360 SGD
Retailer 11$8,033 SGD
Retailer 2$8,055 SGD
Retailer 8$9,555 SGD
Retailer 15$9,556 SGD
Retailer 13$11,521 SGD
Retailer 10$11,654 SGD
Retailer 6$13,987 SGD
Retailer 4$17,149 SGD
Retailer 7$21,954 SGD
Brilliant Earth$36,345 SGD

18 data points across 15 retailers

15 retailers$5,960 SGD to $21,954 SGD

Retailer 1
-
$5,016 SGD
£3,089 GBP
Price last confirmed 19 days ago
A
Retailer 2
-
$5,960 SGD
$4,662 USD
View
Final sale: no returns
Retailer 3
-
$6,173 SGD
$4,829 USD
View
Price last confirmed 20 days ago
A
Retailer 4
-
$6,175 SGD
$4,830 USD
View
B+
Retailer 5
-
$6,360 SGD
$4,975 USD
View
B+
Retailer 6
-
$8,033 SGD
$6,284 USD
View
B+
Retailer 7
-
$8,055 SGD
£4,961 GBP
View
B+
Retailer 8
-
$9,555 SGD
ZAR 120,746 ZAR
View
B+
Retailer 9
-
$9,556 SGD
$7,475 USD
View
B
Retailer 10
-
$11,521 SGD
$9,012 USD
View
Retailer 11
-
$11,654 SGD
A$14,025 AUD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$13,987 SGD
$10,941 USD
View
B
Retailer 13
-
$17,149 SGD
$13,414 USD
View
B
Retailer 14
-
$21,954 SGD
$17,173 USD
View
Most Expensive
Brilliant Earth
11953179A · Oct 30
$36,345 SGD
$28,430 USD
View
Price under review
14 more retailers have this diamond
Prices start from $5,960 SGDSave up to $15,994 SGD

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
$5,960 SGD