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Round|Lab Grown|IGI

4.26ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG737568627

Shape and cutting style on the report: Round brilliant

Certificate IGI LG737568627

Diamond specifications and retailer prices

From €1,836 EUR
£1,615 GBP
As of October 30, 2026
Save €10,333 EUR (85%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: €12,169 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 4.26ct lab-grown round diamond

This 4.26ct 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 LG737568627 or 737568627. Listed at 26 retailers as of October 30, 2026, with prices from €1,836 to €12,169, a €10,333 spread on the same certified stone. Blue Nile lists it at €12,169. 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

4.26
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737568627
Dimensions10.38 × 10.30 × 6.44 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
10.38 mm10.30 mm4.26 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737568627
Side View
Table 56.0%Crown 35.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A+
Exceptional
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 30
Current: €3,755 EUR|Low: €1,830 EUR|High: €21,527 EUR|Avg: €5,034 EUR|+0.3%
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 31, 2026
Retailer 11€1,836 EUR
Retailer 2€2,040 EUR
Retailer 16€2,220 EUR
Retailer 13€2,284 EUR
Retailer 4€2,367 EUR
Retailer 9€3,246 EUR
Retailer 3€3,253 EUR
Retailer 6€3,433 EUR
Retailer 7€3,554 EUR
Retailer 5€3,627 EUR
Retailer 1€3,755 EUR
Retailer 12€5,038 EUR
Retailer 15€5,079 EUR
Retailer 14€6,456 EUR
Retailer 8€9,933 EUR
Retailer 10€12,057 EUR

30 data points across 16 retailers

26 retailers€1,836 EUR to €12,169 EUR

A+
Cheapest Retailer
-
€1,836 EUR
£1,615 GBP
A
Retailer 2
-
€2,040 EUR
$2,279 USD
View
A
Retailer 3
-
€2,220 EUR
$2,480 USD
View
A
Retailer 4
-
€2,284 EUR
$2,552 USD
View
Final sale: no returns
A
Retailer 5
-
€2,367 EUR
$2,644 USD
View
A
Retailer 6
-
€2,502 EUR
$2,795 USD
View
A
Retailer 7
-
€2,876 EUR
HK$25,100 HKD
View
A
Retailer 8
-
€3,246 EUR
£2,855 GBP
View
A
Retailer 9
-
€3,253 EUR
$3,634 USD
View
A
Retailer 10
-
€3,433 EUR
$3,835 USD
View
A
Retailer 11
-
€3,554 EUR
$3,970 USD
View
A
Retailer 12
-
€3,627 EUR
$4,052 USD
View
A
Retailer 13
-
€3,755 EUR
View
A
Retailer 14
-
€4,402 EUR
$4,918 USD
View
A
Retailer 15
-
€5,038 EUR
ZAR 90,921 ZAR
View
Retailer 16
-
€5,079 EUR
A$8,729 AUD
View
Price last confirmed 9 days ago
B+
Retailer 17
-
€6,174 EUR
$6,898 USD
View
B+
Retailer 18
-
€6,319 EUR
$7,060 USD
View
B+
Retailer 19
-
€6,456 EUR
£5,679 GBP
View
B+
Retailer 20
-
€6,681 EUR
$7,465 USD
View
B+
Retailer 21
-
€8,267 EUR
$9,236 USD
View
B+
Retailer 22
-
€8,325 EUR
SGD 12,568 SGD
View
Retailer 23
-
€9,933 EUR
A$17,072 AUD
View
Price last confirmed 27 days ago
B
Retailer 24
-
€12,057 EUR
$13,470 USD
View
B
Retailer 25
-
€12,157 EUR
$13,582 USD
View
Most Expensive
B
Blue Nile
27482224 · Oct 31
€12,169 EUR
$13,595 USD
View
25 more retailers have this diamond
Prices start from €1,836 EURSave up to €10,333 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+
4.26ct Round
€1,836 EUR