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Heart|Lab Grown|IGI

0.40ct D VS1 Heart Lab Grown Diamond

GD • D/VS1 • IGI LG677506127

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG677506127

Diamond specifications and retailer prices

From £59 GBP
$79 USD
As of October 30, 2026
Save £478 GBP (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £536 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.4ct lab-grown heart diamond

This 0.4ct lab-grown heart sits in the sub-half-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG677506127 or 677506127. Listed at 14 retailers as of October 29, 2026, with prices from £59 to £536, a £478 spread on the same certified stone. MOH London lists it at £536. 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

0.40
Carat
D
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.4°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677506127
Dimensions4.79 × 5.24 × 2.68 mm
L/W Ratio1.09
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
4.79 mm5.24 mm0.40 ctD / VS1
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG677506127
Side View
Table 61.0%Crown 34.4°Girdle: MED-STKPavilion 35°Culet: NoneDepth 51.1%

Caratlytics Score

How it works →
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 30
Current: £536 GBP|Low: £59 GBP|High: £696 GBP|Avg: £208 GBP|-22.8%
MOH London
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
October 30, 2026
Retailer 12£59 GBP
Retailer 10£68 GBP
Retailer 3£78 GBP
Retailer 9£78 GBP
Retailer 2£126 GBP
Retailer 8£131 GBP
Retailer 5£160 GBP
Retailer 14£181 GBP
Retailer 7£187 GBP
Retailer 6£231 GBP
Retailer 11£234 GBP
Retailer 13£244 GBP
Retailer 4£279 GBP
MOH London£536 GBP

42 data points across 14 retailers

14 retailers£59 GBP to £536 GBP

A
Cheapest Retailer
-
£59 GBP
$79 USD
A
Retailer 2
-
£68 GBP
$91 USD
View
A
Retailer 3
-
£78 GBP
$104 USD
View
A
Retailer 4
-
£78 GBP
$104 USD
View
B+
Retailer 5
-
£126 GBP
View
B+
Retailer 6
-
£131 GBP
ZAR 2,841 ZAR
View
B+
Retailer 7
-
£160 GBP
$215 USD
View
B
Retailer 8
-
£187 GBP
View
Retailer 9
-
£231 GBP
$310 USD
View
Price last confirmed 11 days ago
B
Retailer 10
-
£234 GBP
$313 USD
View
B
Retailer 11
-
£244 GBP
$327 USD
View
B
Retailer 12
-
£279 GBP
$373 USD
View
C
Retailer 13
-
£396 GBP
View
Most Expensive
C
MOH London
LG677506127 · Oct 29
£536 GBP
View
13 more retailers have this diamond
Prices start from £59 GBPSave up to £478 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
0.40ct Heart
£59 GBP