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Round|Lab Grown|IGI

3.09ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG815611626

Shape and cutting style on the report: Round brilliant

Certificate IGI LG815611626

Diamond specifications and retailer prices

From €570 EUR
$637 USD
As of November 1, 2026
Save €2,215 EUR (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €5,138 EUR at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815611626 or 815611626. Listed at 18 retailers as of November 1, 2026, with a 388% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.09
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815611626
Dimensions9.39 × 9.43 × 5.72 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
9.39 mm9.43 mm3.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815611626
Side View
Table 59.0%Crown 34.3°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
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: €5,138 EUR|Low: €570 EUR|High: €5,138 EUR|Avg: €1,661 EUR
Rare Carat
Retailer 2
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Retailer 8
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Retailer 11
Retailer 12
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Retailer 18
November 1, 2026
Retailer 18€570 EUR
Retailer 15€620 EUR
Retailer 6€638 EUR
Retailer 17€661 EUR
Retailer 9€936 EUR
Retailer 7€968 EUR
Retailer 14€971 EUR
Retailer 11€1,052 EUR
Retailer 12€1,493 EUR
Retailer 13€1,535 EUR
Retailer 16€1,688 EUR
Retailer 3€1,858 EUR
Retailer 8€1,898 EUR
Retailer 4€2,256 EUR
Retailer 10€2,281 EUR
Retailer 5€2,316 EUR
Retailer 2€2,785 EUR
Rare Carat€5,138 EUR

21 data points across 18 retailers

18 retailers€570 EUR to €2,785 EUR

A
Cheapest Retailer
-
€570 EUR
$637 USD
A
Retailer 2
-
€620 EUR
$693 USD
View
A
Retailer 3
-
€638 EUR
$713 USD
View
Final sale: no returns
A
Retailer 4
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€661 EUR
$739 USD
View
A
Retailer 5
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€936 EUR
$1,046 USD
View
A
Retailer 6
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€968 EUR
$1,082 USD
View
A
Retailer 7
-
€971 EUR
$1,085 USD
View
A
Retailer 8
-
€1,052 EUR
£926 GBP
View
A
Retailer 9
-
€1,493 EUR
A$2,566 AUD
View
A
Retailer 10
-
€1,535 EUR
ZAR 27,701 ZAR
View
A
Retailer 11
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€1,688 EUR
$1,886 USD
View
A
Retailer 12
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€1,858 EUR
$2,076 USD
View
A
Retailer 13
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€1,898 EUR
$2,120 USD
View
A
Retailer 14
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€2,256 EUR
$2,520 USD
View
A
Retailer 15
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€2,281 EUR
$2,549 USD
View
A
Retailer 16
-
€2,316 EUR
$2,587 USD
View
B+
Retailer 17
-
€2,785 EUR
£2,450 GBP
View
Most Expensive
Rare Carat
KK461_l_815611626 · Oct 21
€5,138 EUR
$5,740 USD
View
Price last confirmed 11 days ago
17 more retailers have this diamond
Prices start from €570 EURSave up to €2,215 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
3.09ct Round
€570 EUR