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Heart|Lab Grown|IGI

1.45ct D VVS1 Heart Lab Grown Diamond

VG • D/VVS1 • IGI LG818654273

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818654273

Diamond specifications and retailer prices

From £181 GBP
As of November 4, 2026
Save £1,189 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,370 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.45ct lab-grown heart diamond

This 1.45ct 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 LG818654273 or 818654273. Listed at 19 retailers as of November 4, 2026, with prices from £181 to £1,370, a £1,189 spread on the same certified stone. Brilliant Earth lists it at £1,370. 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

1.45
Carat
D
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654273
Dimensions6.88 × 7.82 × 4.50 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
6.88 mm7.82 mm1.45 ctD / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654273
Side View
Table 58.0%Crown 38.1°Girdle: MED-STKPavilion 37.7°Culet: NoneDepth 57.5%

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: Nov 4
Current: £1,370 GBP|Low: £181 GBP|High: £1,370 GBP|Avg: £515 GBP
Brilliant Earth
Retailer 2
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Retailer 20
November 5, 2026
Retailer 11£181 GBP
Retailer 6£204 GBP
Retailer 3£210 GBP
Retailer 9£225 GBP
Retailer 18£225 GBP
Retailer 14£256 GBP
Retailer 12£352 GBP
Retailer 20£379 GBP
Retailer 17£388 GBP
Retailer 19£409 GBP
Retailer 2£423 GBP
Retailer 15£551 GBP
Retailer 16£570 GBP
Retailer 10£588 GBP
Retailer 4£601 GBP
Retailer 8£724 GBP
Retailer 7£727 GBP
Retailer 5£762 GBP
Retailer 13£900 GBP
Brilliant Earth£1,370 GBP

30 data points across 20 retailers

19 retailers£181 GBP to £1,370 GBP

A
Cheapest Retailer
-
£181 GBP
A
Retailer 2
-
£204 GBP
View
Final sale: no returns
A
Retailer 3
-
£210 GBP
View
A
Retailer 4
-
£225 GBP
View
Retailer 5
-
£225 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£256 GBP
View
A
Retailer 7
-
£379 GBP
View
A
Retailer 8
-
£388 GBP
View
B+
Retailer 9
-
£409 GBP
View
B+
Retailer 10
-
£423 GBP
View
B+
Retailer 11
-
£551 GBP
View
B+
Retailer 12
-
£570 GBP
View
B+
Retailer 13
-
£588 GBP
View
B+
Retailer 14
-
£601 GBP
View
B
Retailer 15
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£724 GBP
View
B
Retailer 16
-
£727 GBP
View
B
Retailer 17
-
£762 GBP
View
B
Retailer 18
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£900 GBP
View
Most Expensive
B
Brilliant Earth
21421783A · Nov 4
£1,370 GBP
$1,850 USD
View
18 more retailers have this diamond
Prices start from £181 GBPSave up to £1,189 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
1.45ct Heart
£181 GBP