Round|Lab Grown|IGI

4.20ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG807639396

Shape and cutting style on the report: Round brilliant

Certificate IGI LG807639396

Diamond specifications and retailer prices

From €2,821 EUR
£2,482 GBP
As of November 1, 2026
Save €4,444 EUR (61%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €7,265 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.2ct lab-grown round diamond

This 4.2ct 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 LG807639396 or 807639396. Listed at 7 retailers as of October 31, 2026, with prices from €2,821 to €7,265, a €4,444 spread on the same certified stone. Taylor and Hart lists it at €7,265. 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

4.20
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807639396
Dimensions10.44 × 10.40 × 6.35 mm
L/W Ratio1.00
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
10.44 mm10.40 mm4.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG807639396
Side View
Table 58.0%Crown 33.1°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 60.9%

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: Nov 1
Current: €5,929 EUR|Low: €2,429 EUR|High: €9,626 EUR|Avg: €4,222 EUR|-2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
November 1, 2026
Retailer 6€2,429 EUR
Retailer 2€2,821 EUR
Retailer 4€2,967 EUR
Retailer 3€3,230 EUR
Retailer 5€4,216 EUR
Retailer 1€5,929 EUR
Taylor and Hart€7,265 EUR

34 data points across 7 retailers

7 retailers€2,821 EUR to €7,265 EUR

Retailer 1
-
€2,429 EUR
HK$21,200 HKD
Price last confirmed 41 days ago
A
Retailer 2
-
€2,821 EUR
£2,482 GBP
View
A
Retailer 3
-
€2,967 EUR
$3,315 USD
View
A
Retailer 4
-
€3,230 EUR
View
A
Retailer 5
-
€4,216 EUR
$4,710 USD
View
B+
Retailer 6
-
€5,929 EUR
£5,216 GBP
View
Most Expensive
B+
Taylor and Hart
76D2FDW · Oct 31
€7,265 EUR
$8,117 USD
View
6 more retailers have this diamond
Prices start from €2,821 EURSave up to €4,444 EUR

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
4.20ct Round
€2,821 EUR