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Round|Lab Grown|IGI

4.26ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG711516896

Shape and cutting style on the report: Round brilliant

Certificate IGI LG711516896

Diamond specifications and retailer prices

From €1,712 EUR
$1,913 USD
As of October 29, 2026
Save €16,977 EUR (91%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: €18,689 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG711516896 or 711516896. Listed at 27 retailers as of October 29, 2026, with prices from €1,712 to €18,689, a €16,977 spread on the same certified stone. Brilliant Earth lists it at €18,689. 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 angle34.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG711516896
Dimensions10.43 × 10.39 × 6.43 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
10.43 mm10.39 mm4.26 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG711516896
Side View
Table 56.0%Crown 34.4°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: €18,689 EUR|Low: €1,712 EUR|High: €21,402 EUR|Avg: €4,983 EUR|-12.7%
Brilliant Earth
Retailer 2
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Retailer 22
October 31, 2026
Retailer 4€1,712 EUR
Retailer 21€1,863 EUR
Retailer 10€1,917 EUR
Retailer 15€1,986 EUR
Retailer 18€2,135 EUR
Retailer 9€2,223 EUR
Retailer 5€2,790 EUR
Retailer 2€3,005 EUR
Retailer 6€3,013 EUR
Retailer 22€3,261 EUR
Retailer 17€3,316 EUR
Retailer 3€3,323 EUR
Retailer 13€4,666 EUR
Retailer 19€4,704 EUR
Retailer 20€5,487 EUR
Retailer 7€5,616 EUR
Retailer 12€5,750 EUR
Retailer 16€5,979 EUR
Retailer 14€7,665 EUR
Retailer 11€10,215 EUR
Retailer 8€11,779 EUR
Brilliant Earth€18,689 EUR

38 data points across 22 retailers

27 retailers€1,712 EUR to €18,689 EUR

A
Cheapest Retailer
-
€1,712 EUR
$1,913 USD
A
Retailer 2
-
€1,863 EUR
$2,081 USD
View
A
Retailer 3
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€1,917 EUR
$2,142 USD
View
Final sale: no returns
A
Retailer 4
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€1,986 EUR
$2,219 USD
View
A
Retailer 5
-
€2,135 EUR
$2,385 USD
View
Retailer 6
-
€2,197 EUR
$2,455 USD
View
Price last confirmed 21 days ago
A
Retailer 7
-
€2,223 EUR
$2,484 USD
View
A
Retailer 8
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€2,790 EUR
$3,117 USD
View
A
Retailer 9
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€3,005 EUR
£2,643 GBP
View
A
Retailer 10
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€3,013 EUR
$3,366 USD
View
A
Retailer 11
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€3,261 EUR
$3,643 USD
View
A
Retailer 12
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€3,316 EUR
View
A
Retailer 13
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€3,323 EUR
$3,713 USD
View
A
Retailer 14
-
€4,666 EUR
ZAR 84,214 ZAR
View
Retailer 15
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€4,704 EUR
A$8,085 AUD
View
Price last confirmed 9 days ago
A
Retailer 16
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€5,038 EUR
$5,629 USD
View
Retailer 17
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€5,487 EUR
$6,130 USD
View
Price last confirmed 11 days ago
B+
Retailer 18
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€5,616 EUR
$6,274 USD
View
B+
Retailer 19
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€5,750 EUR
$6,424 USD
View
B+
Retailer 20
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€5,979 EUR
£5,260 GBP
View
B+
Retailer 21
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€7,665 EUR
$8,564 USD
View
B+
Retailer 22
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€8,915 EUR
$9,960 USD
View
B
Retailer 23
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€10,215 EUR
$11,412 USD
View
B
Retailer 24
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€11,779 EUR
$13,160 USD
View
B
Retailer 25
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€16,756 EUR
$18,720 USD
View
B
Retailer 26
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€16,756 EUR
$18,720 USD
View
Most Expensive
B
Brilliant Earth
16521058A · Oct 31
€18,689 EUR
$20,880 USD
View
26 more retailers have this diamond
Prices start from €1,712 EURSave up to €16,977 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
€1,712 EUR