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Round|Lab Grown|IGI

4.27ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG739546597

Shape and cutting style on the report: Round brilliant

Certificate IGI LG739546597

Diamond specifications and retailer prices

From £1,849 GBP
$2,477 USD
As of October 29, 2026
Save £8,816 GBP (83%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £10,665 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.27ct lab-grown round diamond

This 4.27ct 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 LG739546597 or 739546597. Listed at 26 retailers as of October 29, 2026, with prices from £1,849 to £10,665, a £8,816 spread on the same certified stone. Brilliant Earth lists it at £10,665. 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

4.27
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739546597
Dimensions10.44 × 10.36 × 6.41 mm
L/W Ratio1.01
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
10.44 mm10.36 mm4.27 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739546597
Side View
Table 56.0%Crown 33.8°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.6%

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 29
Current: £10,665 GBP|Low: £1,667 GBP|High: £18,554 GBP|Avg: £4,707 GBP|-42.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
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Retailer 23
October 30, 2026
Retailer 3£1,667 GBP
Retailer 22£1,849 GBP
Retailer 21£2,011 GBP
Retailer 17£2,070 GBP
Retailer 4£2,144 GBP
Retailer 14£2,241 GBP
Retailer 15£2,608 GBP
Retailer 2£2,883 GBP
Retailer 23£2,947 GBP
Retailer 6£3,064 GBP
Retailer 5£3,214 GBP
Retailer 8£3,224 GBP
Retailer 19£3,421 GBP
Retailer 9£3,733 GBP
Retailer 13£4,564 GBP
Retailer 20£4,601 GBP
Retailer 16£5,609 GBP
Retailer 11£5,725 GBP
Retailer 18£5,771 GBP
Retailer 10£6,019 GBP
Retailer 7£8,399 GBP
Retailer 12£10,181 GBP
Brilliant Earth£10,665 GBP

29 data points across 23 retailers

26 retailers£1,849 GBP to £10,665 GBP

Retailer 1
-
£1,667 GBP
Price last confirmed 13 days ago
A
Retailer 2
-
£1,849 GBP
$2,477 USD
View
A
Retailer 3
-
£2,011 GBP
$2,695 USD
View
A
Retailer 4
-
£2,070 GBP
$2,773 USD
View
Final sale: no returns
A
Retailer 5
-
£2,144 GBP
$2,873 USD
View
A
Retailer 6
-
£2,241 GBP
$3,003 USD
View
A
Retailer 7
-
£2,608 GBP
HK$27,300 HKD
View
A
Retailer 8
-
£2,883 GBP
View
A
Retailer 9
-
£2,947 GBP
$3,949 USD
View
A
Retailer 10
-
£3,064 GBP
$4,105 USD
View
A
Retailer 11
-
£3,214 GBP
$4,307 USD
View
A
Retailer 12
-
£3,224 GBP
$4,320 USD
View
A
Retailer 13
-
£3,421 GBP
€4,365 EUR
View
A
Retailer 14
-
£3,733 GBP
$5,002 USD
View
A
Retailer 15
-
£4,564 GBP
ZAR 98,792 ZAR
View
Retailer 16
-
£4,601 GBP
A$9,484 AUD
View
Price last confirmed 8 days ago
B+
Retailer 17
-
£5,609 GBP
$7,515 USD
View
B+
Retailer 18
-
£5,725 GBP
$7,671 USD
View
B+
Retailer 19
-
£5,771 GBP
View
B+
Retailer 20
-
£6,019 GBP
$8,065 USD
View
B+
Retailer 21
-
£7,482 GBP
$10,026 USD
View
B+
Retailer 22
-
£7,562 GBP
SGD 13,692 SGD
View
B
Retailer 23
-
£8,283 GBP
$11,098 USD
View
Retailer 24
-
£8,399 GBP
A$17,314 AUD
View
Price last confirmed 22 days ago
B
Retailer 25
-
£10,181 GBP
$13,641 USD
View
Most Expensive
B
Brilliant Earth
16177765A · Oct 30
£10,665 GBP
$14,290 USD
View
25 more retailers have this diamond
Prices start from £1,849 GBPSave up to £8,816 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
4.27ct Round
£1,849 GBP