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Round|Lab Grown|IGI

4.31ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG776690494

Shape and cutting style on the report: Round brilliant

Certificate IGI LG776690494

Diamond specifications and retailer prices

From £1,382 GBP
As of November 1, 2026
Save £8,731 GBP (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £10,113 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.31ct lab-grown round diamond

This 4.31ct lab-grown round 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 LG776690494 or 776690494. Listed at 21 retailers as of October 31, 2026, with prices from £1,382 to £10,113, a £8,731 spread on the same certified stone. Brilliant Earth lists it at £10,113. 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

4.31
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776690494
Dimensions10.41 × 10.44 × 6.46 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.41 mm10.44 mm4.31 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776690494
Side View
Table 57.0%Crown 34.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,428 GBP|Low: £1,381 GBP|High: £9,598 GBP|Avg: £3,577 GBP|-15.0%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 15£1,382 GBP
Retailer 2£1,395 GBP
Retailer 9£1,518 GBP
Retailer 11£1,562 GBP
Retailer 4£1,618 GBP
Retailer 18£1,743 GBP
Retailer 7£1,845 GBP
Retailer 1£2,428 GBP
Retailer 6£2,455 GBP
Retailer 13£2,535 GBP
Retailer 19£2,565 GBP
Retailer 10£2,823 GBP
Retailer 17£3,802 GBP
Retailer 14£3,827 GBP
Retailer 20£4,361 GBP
Retailer 12£4,846 GBP
Retailer 5£6,125 GBP
Retailer 8£6,249 GBP
Retailer 16£8,090 GBP
Retailer 3£9,598 GBP

34 data points across 20 retailers

21 retailers£1,382 GBP to £10,113 GBP

A+
Cheapest Retailer
-
£1,382 GBP
A
Retailer 2
-
£1,395 GBP
$1,869 USD
View
A
Retailer 3
-
£1,518 GBP
$2,034 USD
View
A
Retailer 4
-
£1,562 GBP
$2,093 USD
View
Final sale: no returns
A
Retailer 5
-
£1,618 GBP
$2,168 USD
View
A
Retailer 6
-
£1,743 GBP
$2,335 USD
View
A
Retailer 7
-
£1,845 GBP
$2,472 USD
View
A
Retailer 8
-
£2,428 GBP
View
A
Retailer 9
-
£2,455 GBP
$3,290 USD
View
A
Retailer 10
-
£2,535 GBP
$3,397 USD
View
A
Retailer 11
-
£2,565 GBP
$3,437 USD
View
A
Retailer 12
-
£2,823 GBP
$3,782 USD
View
A
Retailer 13
-
£3,802 GBP
ZAR 82,309 ZAR
View
A
Retailer 14
-
£3,827 GBP
A$7,889 AUD
View
A
Retailer 15
-
£4,361 GBP
$5,843 USD
View
B+
Retailer 16
-
£4,846 GBP
View
B+
Retailer 17
-
£6,125 GBP
SGD 11,090 SGD
View
B+
Retailer 18
-
£6,249 GBP
$8,373 USD
View
B+
Retailer 19
-
£8,090 GBP
A$16,676 AUD
View
B
Retailer 20
-
£9,598 GBP
$12,860 USD
View
Most Expensive
B
Brilliant Earth
22137943Y · Oct 31
£10,113 GBP
$13,550 USD
View
20 more retailers have this diamond
Prices start from £1,382 GBPSave up to £8,731 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+
4.31ct Round
£1,382 GBP