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Heart|Lab Grown|IGI

3.10ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG825660975

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825660975

Diamond specifications and retailer prices

From £1,253 GBP
As of November 3, 2026
Save £8,135 GBP (87%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £9,388 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 3.1ct lab-grown heart diamond

This 3.1ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825660975 or 825660975. Listed at 7 retailers as of November 3, 2026, with prices from £1,253 to £9,388, a £8,135 spread on the same certified stone. Brilliant Earth lists it at £9,388. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.10
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660975
Dimensions8.92 × 9.94 × 6.00 mm
L/W Ratio1.11
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
8.92 mm9.94 mm3.10 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660975
Side View
Table 55.0%Crown 36.3°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 60.4%

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 3
Current: £9,388 GBP|Low: £1,253 GBP|High: £9,388 GBP|Avg: £3,002 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 5£1,253 GBP
Retailer 4£1,644 GBP
Retailer 2£1,834 GBP
Retailer 6£3,474 GBP
Retailer 3£3,710 GBP
Retailer 7£4,345 GBP
Brilliant Earth£9,388 GBP

34 data points across 7 retailers

7 retailers£1,253 GBP to £9,388 GBP

A
Cheapest Retailer
-
£1,253 GBP
Final sale: no returns
A
Retailer 2
-
£1,644 GBP
View
A
Retailer 3
-
£1,834 GBP
View
B+
Retailer 4
-
£3,474 GBP
View
B+
Retailer 5
-
£3,710 GBP
View
B+
Retailer 6
-
£4,345 GBP
View
Most Expensive
B
Brilliant Earth
22469001A · Nov 3
£9,388 GBP
$12,590 USD
View
6 more retailers have this diamond
Prices start from £1,253 GBPSave up to £8,135 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
3.10ct Heart
£1,253 GBP