CaratHunter
Plans
Heart|Lab Grown|IGI

1.28ct E VS1 Heart Lab Grown Diamond

ID • E/VS1 • IGI LG591310915

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG591310915

Diamond specifications and retailer prices

From $188 USD
As of October 30, 2026
Save $1,857 USD (91%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,045 USD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown heart diamond

This 1.28ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG591310915 or 591310915. Listed at 20 retailers as of October 27, 2026, with prices from $188 to $2,045, a $1,857 spread on the same certified stone. Queensmith lists it at $2,045. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591310915
Dimensions7.14 × 7.46 × 4.11 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.14 mm7.46 mm1.28 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591310915
Side View
Table 64.0%Crown 38.3°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 55.1%

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 30
Current: $424 USD|Low: $188 USD|High: $1,104 USD|Avg: $499 USD|-10.2%
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
October 31, 2026
Retailer 8$188 USD
Retailer 6$210 USD
Retailer 5$219 USD
Retailer 2$234 USD
Retailer 4$234 USD
Retailer 11$293 USD
Retailer 12$397 USD
Retailer 13$401 USD
Retailer 7$411 USD
Retailer 1$424 USD
Retailer 3$477 USD
Retailer 14$570 USD
Retailer 10$750 USD
Retailer 17$751 USD
Retailer 16$754 USD
Retailer 9$805 USD
Retailer 15$1,093 USD

35 data points across 17 retailers

20 retailers$188 USD to $2,045 USD

A
Cheapest Retailer
-
$188 USD
A
Retailer 2
-
$210 USD
View
Final sale: no returns
A
Retailer 3
-
$219 USD
View
A
Retailer 4
-
$234 USD
View
A
Retailer 5
-
$234 USD
View
Retailer 6
-
$259 USD
View
Price last confirmed 36 days ago
A
Retailer 7
-
$293 USD
£231 GBP
View
A
Retailer 8
-
$397 USD
€378 EUR
View
A
Retailer 9
-
$401 USD
ZAR 6,481 ZAR
View
A
Retailer 10
-
$411 USD
View
A
Retailer 11
-
$424 USD
£334 GBP
View
B+
Retailer 12
-
$477 USD
View
B+
Retailer 13
-
$570 USD
A$877 AUD
View
B+
Retailer 14
-
$593 USD
View
B+
Retailer 15
-
$750 USD
View
B+
Retailer 16
-
$751 USD
View
Retailer 17
-
$754 USD
View
Price last confirmed 11 days ago
B
Retailer 18
-
$805 USD
View
B
Retailer 19
-
$1,093 USD
£861 GBP
View
Most Expensive
B
Queensmith
LG591310915 · Oct 27
$2,045 USD
£1,610 GBP
View
19 more retailers have this diamond
Prices start from $188 USDSave up to $1,857 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
1.28ct Heart
$188 USD