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Heart|Lab Grown|IGI

1.03ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG627410532

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG627410532

Diamond specifications and retailer prices

From £173 GBP
$230 USD
As of October 27, 2026
Save £1,308 GBP (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,481 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.03ct lab-grown heart diamond

This 1.03ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG627410532 or 627410532. Listed at 22 retailers as of October 27, 2026, with prices from £173 to £1,481, a £1,308 spread on the same certified stone. Queensmith lists it at £1,481. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627410532
Dimensions6.42 × 6.42 × 3.97 mm
L/W Ratio1.00
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
6.42 mm6.42 mm1.03 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627410532
Side View
Table 61.0%Crown 27.1°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 56.1%

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: Oct 27
Current: £348 GBP|Low: £144 GBP|High: £1,317 GBP|Avg: £600 GBP|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
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Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
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Retailer 15
October 29, 2026
Retailer 3£194 GBP
Retailer 13£201 GBP
Retailer 4£290 GBP
Retailer 1£348 GBP
Retailer 9£370 GBP
Retailer 8£403 GBP
Retailer 14£435 GBP
Retailer 15£447 GBP
Retailer 10£525 GBP
Retailer 12£694 GBP
Retailer 2£731 GBP
Retailer 11£863 GBP
Retailer 5£971 GBP
Retailer 6£1,092 GBP
Retailer 7£1,279 GBP

35 data points across 15 retailers

22 retailers£173 GBP to £1,481 GBP

A
Cheapest Retailer
-
£173 GBP
$230 USD
A
Retailer 2
-
£194 GBP
$258 USD
View
Final sale: no returns
A
Retailer 3
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£201 GBP
$267 USD
View
A
Retailer 4
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£215 GBP
$286 USD
View
A
Retailer 5
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£215 GBP
$286 USD
View
A
Retailer 6
-
£290 GBP
$385 USD
View
A
Retailer 7
-
£348 GBP
€440 EUR
View
A
Retailer 8
-
£370 GBP
ZAR 7,932 ZAR
View
A
Retailer 9
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£395 GBP
View
Price last confirmed 10 days ago
A
Retailer 10
-
£403 GBP
View
A
Retailer 11
-
£435 GBP
$578 USD
View
A
Retailer 12
-
£447 GBP
$594 USD
View
B+
Retailer 13
-
£525 GBP
A$1,073 AUD
View
B+
Retailer 14
-
£563 GBP
$748 USD
View
B+
Retailer 15
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£692 GBP
$919 USD
View
B+
Retailer 16
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£694 GBP
$922 USD
View
Price last confirmed 7 days ago
B+
Retailer 17
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£731 GBP
$971 USD
View
B+
Retailer 18
-
£863 GBP
View
B
Retailer 19
-
£971 GBP
$1,291 USD
View
B
Retailer 20
-
£1,092 GBP
A$2,233 AUD
View
Price last confirmed 21 days ago
B
Retailer 21
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£1,279 GBP
$1,700 USD
View
Most Expensive
B
Queensmith
LG627410532 · Oct 27
£1,481 GBP
View
21 more retailers have this diamond
Prices start from £173 GBPSave up to £1,308 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
1.03ct Heart
£173 GBP