Heart|Lab Grown|IGI

1.28ct D VS2 Heart Lab Grown Diamond

VG • D/VS2 • IGI LG838640953

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG838640953

Diamond specifications and retailer prices

From £185 GBP
$248 USD
As of October 30, 2026
Save £808 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £993 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 D colour (colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG838640953 or 838640953. Listed at 10 retailers as of October 30, 2026, with prices from £185 to £993, a £808 spread on the same certified stone. Brilliant Earth lists it at £993. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
D
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838640953
Dimensions6.43 × 7.38 × 4.63 mm
L/W Ratio1.15
Girdle conditionFaceted
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
6.43 mm7.38 mm1.28 ctD / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838640953
Side View
Table 59.0%Crown 37.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.7%

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: £325 GBP|Low: £184 GBP|High: £878 GBP|Avg: £473 GBP|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 8£185 GBP
Retailer 5£214 GBP
Retailer 3£311 GBP
Retailer 1£325 GBP
Retailer 6£368 GBP
Retailer 2£575 GBP
Retailer 9£613 GBP
Retailer 7£838 GBP
Retailer 4£873 GBP

24 data points across 9 retailers

10 retailers£185 GBP to £993 GBP

A
Cheapest Retailer
-
£185 GBP
$248 USD
Final sale: no returns
A
Retailer 2
-
£214 GBP
View
A
Retailer 3
-
£311 GBP
$417 USD
View
A
Retailer 4
-
£325 GBP
View
B+
Retailer 5
-
£368 GBP
$493 USD
View
B
Retailer 6
-
£575 GBP
$770 USD
View
B
Retailer 7
-
£613 GBP
$821 USD
View
B
Retailer 8
-
£838 GBP
View
B
Retailer 9
-
£873 GBP
$1,170 USD
View
Most Expensive
B
Brilliant Earth
22340644A · Oct 30
£993 GBP
$1,330 USD
View
9 more retailers have this diamond
Prices start from £185 GBPSave up to £808 GBP

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
£185 GBP