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Round|Lab Grown|IGI

4.18ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG691525873

Shape and cutting style on the report: Round brilliant

Certificate IGI LG691525873

Diamond specifications and retailer prices

From £2,472 GBP
As of October 29, 2026
Save £16,474 GBP (87%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £18,946 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 4.18ct lab-grown round diamond

This 4.18ct 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 LG691525873 or 691525873. Listed at 24 retailers as of October 29, 2026, with prices from £2,472 to £18,946, a £16,474 spread on the same certified stone. Do Amore Diamonds lists it at £18,946. 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

4.18
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691525873
Dimensions10.30 × 10.34 × 6.38 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
10.30 mm10.34 mm4.18 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691525873
Side View
Table 57.0%Crown 35.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.9%

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: £6,763 GBP|Low: £2,383 GBP|High: £17,617 GBP|Avg: £5,640 GBP|+1.9%
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
October 29, 2026
Retailer 12£2,472 GBP
Retailer 16£2,482 GBP
Retailer 8£2,700 GBP
Retailer 3£2,879 GBP
Retailer 13£2,880 GBP
Retailer 7£2,884 GBP
Retailer 15£3,971 GBP
Retailer 9£4,122 GBP
Retailer 5£4,469 GBP
Retailer 11£5,032 GBP
Retailer 1£6,763 GBP
Retailer 10£6,844 GBP
Retailer 14£6,892 GBP
Retailer 4£7,242 GBP
Retailer 6£10,954 GBP
Retailer 2£17,617 GBP

37 data points across 16 retailers

24 retailers£2,472 GBP to £18,946 GBP

A
Cheapest Retailer
-
£2,472 GBP
A
Retailer 2
-
£2,482 GBP
$3,305 USD
View
A
Retailer 3
-
£2,700 GBP
$3,596 USD
View
A
Retailer 4
-
£2,780 GBP
$3,702 USD
View
Final sale: no returns
A
Retailer 5
-
£2,879 GBP
$3,834 USD
View
Retailer 6
-
£2,879 GBP
$3,834 USD
View
Price last confirmed 17 days ago
A
Retailer 7
-
£2,880 GBP
$3,835 USD
View
A
Retailer 8
-
£2,884 GBP
$3,840 USD
View
A
Retailer 9
-
£2,913 GBP
$3,879 USD
View
A
Retailer 10
-
£3,971 GBP
$5,288 USD
View
A
Retailer 11
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£3,971 GBP
$5,288 USD
View
A
Retailer 12
-
£4,122 GBP
View
A
Retailer 13
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£4,469 GBP
$5,951 USD
View
B+
Retailer 14
-
£5,032 GBP
€6,382 EUR
View
B+
Retailer 15
-
£6,763 GBP
ZAR 145,498 ZAR
View
B+
Retailer 16
-
£6,844 GBP
View
Retailer 17
-
£6,892 GBP
A$14,119 AUD
View
Price last confirmed 7 days ago
B+
Retailer 18
-
£7,242 GBP
$9,644 USD
View
B+
Retailer 19
-
£7,610 GBP
$10,134 USD
View
B
Retailer 20
-
£10,954 GBP
SGD 19,712 SGD
View
B
Retailer 21
-
£11,212 GBP
$14,930 USD
View
B
Retailer 22
-
£17,076 GBP
$22,740 USD
View
B
Retailer 23
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£17,617 GBP
$23,460 USD
View
Most Expensive
B
Do Amore Diamonds
23-691525873 · Oct 29
£18,946 GBP
$25,230 USD
View
23 more retailers have this diamond
Prices start from £2,472 GBPSave up to £16,474 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
4.18ct Round
£2,472 GBP