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Round|Lab Grown|IGI

4.26ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG578312997

Shape and cutting style on the report: Round brilliant

Certificate IGI LG578312997

Diamond specifications and retailer prices

From €2,743 EUR
$3,064 USD
As of November 1, 2026
Save €17,787 EUR (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €20,530 EUR at Mervis Diamond Importers · As of October 31, 2026
View at Mervis Diamond Importers

About this 4.26ct lab-grown round diamond

This 4.26ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG578312997 or 578312997. Listed at 22 retailers as of October 31, 2026, with prices from €2,743 to €20,530, a €17,787 spread on the same certified stone. Mervis Diamond Importers lists it at €20,530. 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
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578312997
Dimensions10.32 × 10.34 × 6.44 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.32 mm10.34 mm4.26 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578312997
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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: €20,530 EUR|Low: €2,743 EUR|High: €20,530 EUR|Avg: €7,384 EUR
Mervis Diamond Importers
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
November 1, 2026
Retailer 13€2,743 EUR
Retailer 5€3,071 EUR
Retailer 11€3,182 EUR
Retailer 6€3,263 EUR
Retailer 12€4,477 EUR
Retailer 9€4,665 EUR
Retailer 3€4,943 EUR
Retailer 10€7,473 EUR
Retailer 8€7,570 EUR
Retailer 15€7,968 EUR
Retailer 2€8,900 EUR
Retailer 14€9,318 EUR
Retailer 4€9,951 EUR
Retailer 7€10,143 EUR
Mervis Diamond Importers€20,530 EUR

41 data points across 15 retailers

22 retailers€2,743 EUR to €20,530 EUR

A
Cheapest Retailer
-
€2,743 EUR
$3,064 USD
A
Retailer 2
-
€2,983 EUR
$3,333 USD
View
A
Retailer 3
-
€3,071 EUR
$3,431 USD
View
Final sale: no returns
Retailer 4
-
€3,181 EUR
$3,554 USD
View
Price last confirmed 20 days ago
A
Retailer 5
-
€3,181 EUR
$3,554 USD
View
A
Retailer 6
-
€3,182 EUR
$3,555 USD
View
A
Retailer 7
-
€3,263 EUR
$3,645 USD
View
A
Retailer 8
-
€3,718 EUR
$4,154 USD
View
B+
Retailer 9
-
€4,388 EUR
$4,902 USD
View
B+
Retailer 10
-
€4,477 EUR
$5,002 USD
View
B+
Retailer 11
-
€4,665 EUR
£4,104 GBP
View
B+
Retailer 12
-
€4,943 EUR
$5,522 USD
View
B+
Retailer 13
-
€7,473 EUR
ZAR 134,869 ZAR
View
B+
Retailer 14
-
€7,570 EUR
A$13,011 AUD
View
B
Retailer 15
-
€7,968 EUR
$8,902 USD
View
B+
Retailer 16
-
€8,900 EUR
£7,829 GBP
View
B
Retailer 17
-
€9,318 EUR
$10,410 USD
View
B
Retailer 18
-
€9,951 EUR
$11,117 USD
View
B
Retailer 19
-
€10,143 EUR
$11,332 USD
View
B
Retailer 20
-
€12,324 EUR
$13,769 USD
View
B
Retailer 21
-
€18,868 EUR
$21,080 USD
View
Most Expensive
B
Mervis Diamond Importers
1985409124 · Oct 31
€20,530 EUR
$22,936 USD
View
21 more retailers have this diamond
Prices start from €2,743 EURSave up to €17,787 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
€2,743 EUR