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Heart|Lab Grown|IGI

1.28ct D VVS1 Heart Lab Grown Diamond

ID • D/VVS1 • IGI LG839670664

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG839670664

Diamond specifications and retailer prices

From £170 GBP
$228 USD
As of November 2, 2026
Save £944 GBP (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,114 GBP at Michael Trio · As of November 2, 2026
View at Michael Trio

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 top-tier cut grade and certified by IGI LG839670664 or 839670664. Listed at 20 retailers as of November 2, 2026, with prices from £170 to £1,114, a £944 spread on the same certified stone. Michael Trio lists it at £1,114. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839670664
Dimensions6.79 × 7.32 × 4.35 mm
L/W Ratio1.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.79 mm7.32 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839670664
Side View
Table 60.0%Crown 35.7°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
A+
Exceptional
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: Nov 2
Current: £1,114 GBP|Low: £170 GBP|High: £1,127 GBP|Avg: £465 GBP|-1.1%
Michael Trio
Retailer 2
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November 3, 2026
Retailer 19£170 GBP
Retailer 7£191 GBP
Retailer 4£197 GBP
Retailer 2£211 GBP
Retailer 11£213 GBP
Retailer 3£240 GBP
Retailer 9£285 GBP
Retailer 18£339 GBP
Retailer 5£365 GBP
Retailer 13£394 GBP
Retailer 8£449 GBP
Retailer 10£484 GBP
Retailer 14£515 GBP
Retailer 17£680 GBP
Retailer 6£680 GBP
Retailer 12£716 GBP
Retailer 15£729 GBP
Retailer 16£844 GBP
Michael Trio£1,114 GBP

17 data points across 19 retailers

20 retailers£170 GBP to £1,114 GBP

A+
Cheapest Retailer
-
£170 GBP
$228 USD
A
Retailer 2
-
£191 GBP
$256 USD
View
Final sale: no returns
A
Retailer 3
-
£197 GBP
$265 USD
View
A
Retailer 4
-
£211 GBP
$283 USD
View
Retailer 5
-
£213 GBP
$286 USD
View
Price last confirmed 9 days ago
A
Retailer 6
-
£240 GBP
View
B+
Retailer 7
-
£285 GBP
$382 USD
View
A
Retailer 8
-
£339 GBP
€433 EUR
View
A
Retailer 9
-
£365 GBP
ZAR 7,920 ZAR
View
A
Retailer 10
-
£394 GBP
View
B+
Retailer 11
-
£449 GBP
$602 USD
View
B+
Retailer 12
-
£484 GBP
$649 USD
View
B+
Retailer 13
-
£515 GBP
A$1,064 AUD
View
B+
Retailer 14
-
£680 GBP
$912 USD
View
B+
Retailer 15
-
£680 GBP
$913 USD
View
B+
Retailer 16
-
£716 GBP
$961 USD
View
B+
Retailer 17
-
£729 GBP
$978 USD
View
B
Retailer 18
-
£844 GBP
View
Retailer 19
-
£852 GBP
A$1,760 AUD
View
Price last confirmed 25 days ago
Most Expensive
B
Michael Trio
6512483400 · Nov 2
£1,114 GBP
SGD 2,020 SGD
View
19 more retailers have this diamond
Prices start from £170 GBPSave up to £944 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
£170 GBP