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Heart|Lab Grown|IGI

1.28ct D VVS1 Heart Lab Grown Diamond

VG • D/VVS1 • IGI LG831679993

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831679993

Diamond specifications and retailer prices

From £164 GBP
$220 USD
As of November 2, 2026
Save £961 GBP (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,125 GBP at Brilliant Earth · As of October 29, 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 VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG831679993 or 831679993. Listed at 18 retailers as of October 29, 2026, with prices from £164 to £1,125, a £961 spread on the same certified stone. Brilliant Earth lists it at £1,125. 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
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831679993
Dimensions6.70 × 7.65 × 4.19 mm
L/W Ratio1.14
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
6.70 mm7.65 mm1.28 ctD / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831679993
Side View
Table 60.0%Crown 37.6°Girdle: STK-THKPavilion 35.7°Culet: NoneDepth 54.8%

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: Nov 2
Current: £1,125 GBP|Low: £164 GBP|High: £1,125 GBP|Avg: £486 GBP
Brilliant Earth
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
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Retailer 18
November 3, 2026
Retailer 3£164 GBP
Retailer 9£183 GBP
Retailer 13£190 GBP
Retailer 8£203 GBP
Retailer 12£232 GBP
Retailer 4£347 GBP
Retailer 14£351 GBP
Retailer 2£374 GBP
Retailer 18£385 GBP
Retailer 6£481 GBP
Retailer 11£496 GBP
Retailer 16£653 GBP
Retailer 17£655 GBP
Retailer 10£658 GBP
Retailer 7£692 GBP
Retailer 5£697 GBP
Retailer 15£814 GBP
Brilliant Earth£1,125 GBP

6 data points across 18 retailers

18 retailers£164 GBP to £1,125 GBP

A
Cheapest Retailer
-
£164 GBP
$220 USD
A
Retailer 2
-
£183 GBP
$246 USD
View
Final sale: no returns
A
Retailer 3
-
£190 GBP
$255 USD
View
A
Retailer 4
-
£203 GBP
$272 USD
View
A
Retailer 5
-
£232 GBP
View
B+
Retailer 6
-
£347 GBP
$466 USD
View
B+
Retailer 7
-
£351 GBP
ZAR 7,600 ZAR
View
B+
Retailer 8
-
£374 GBP
View
B+
Retailer 9
-
£385 GBP
$517 USD
View
B+
Retailer 10
-
£481 GBP
$645 USD
View
B
Retailer 11
-
£496 GBP
A$1,025 AUD
View
B
Retailer 12
-
£653 GBP
$876 USD
View
B
Retailer 13
-
£655 GBP
$879 USD
View
B
Retailer 14
-
£658 GBP
SGD 1,194 SGD
View
B
Retailer 15
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£692 GBP
$929 USD
View
B
Retailer 16
-
£697 GBP
$935 USD
View
B
Retailer 17
-
£814 GBP
View
Most Expensive
B
Brilliant Earth
22348635A · Oct 29
£1,125 GBP
$1,510 USD
View
17 more retailers have this diamond
Prices start from £164 GBPSave up to £961 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
£164 GBP