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Heart|Lab Grown|IGI

3.00ct G SI1 Heart Lab Grown Diamond

ID • G/SI1 • IGI LG529246771

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG529246771

Diamond specifications and retailer prices

From £338 GBP
As of November 4, 2026
Save £2,666 GBP (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,003 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 3ct lab-grown heart diamond

This 3ct lab-grown heart sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG529246771 or 529246771. Listed at 17 retailers as of November 4, 2026, with prices from £338 to £3,003, a £2,666 spread on the same certified stone. Do Amore Diamonds lists it at £3,003. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.00
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.2°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529246771
Dimensions8.40 × 10.05 × 6.10 mm
L/W Ratio1.20
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
8.40 mm10.05 mm3.00 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529246771
Side View
Table 59.5%Crown 41.2°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 60.7%

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: £1,216 GBP|Low: £324 GBP|High: £1,953 GBP|Avg: £849 GBP
Retailer 1
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
Retailer 15
November 6, 2026
Retailer 14£338 GBP
Retailer 8£379 GBP
Retailer 7£419 GBP
Retailer 12£419 GBP
Retailer 11£527 GBP
Retailer 13£533 GBP
Retailer 6£622 GBP
Retailer 5£640 GBP
Retailer 2£654 GBP
Retailer 9£762 GBP
Retailer 15£1,127 GBP
Retailer 1£1,216 GBP
Retailer 3£1,651 GBP
Retailer 4£1,694 GBP
Retailer 10£1,925 GBP

46 data points across 15 retailers

17 retailers£338 GBP to £3,003 GBP

A
Cheapest Retailer
-
£338 GBP
A
Retailer 2
-
£379 GBP
View
A
Retailer 3
-
£419 GBP
View
Final sale: no returns
A
Retailer 4
-
£419 GBP
View
A
Retailer 5
-
£527 GBP
View
A
Retailer 6
-
£583 GBP
View
A
Retailer 7
-
£622 GBP
View
A
Retailer 8
-
£640 GBP
View
B+
Retailer 9
-
£654 GBP
View
A
Retailer 10
-
£762 GBP
View
B+
Retailer 11
-
£1,127 GBP
View
B
Retailer 12
-
£1,216 GBP
View
B
Retailer 13
-
£1,594 GBP
View
B
Retailer 14
-
£1,651 GBP
View
B
Retailer 15
-
£1,694 GBP
View
B
Retailer 16
-
£1,925 GBP
View
Most Expensive
B
Do Amore Diamonds
27-DE4E58281 · Nov 6
£3,003 GBP
$4,020 USD
View
16 more retailers have this diamond
Prices start from £338 GBPSave up to £2,666 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
3.00ct Heart
£338 GBP