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Round|Lab Grown|IGI

3.09ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG734539318

Shape and cutting style on the report: Round brilliant

Certificate IGI LG734539318

Diamond specifications and retailer prices

From €829 EUR
$926 USD
As of October 29, 2026
Save €8,229 EUR (91%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: €9,058 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.09ct lab-grown round diamond

This 3.09ct 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 LG734539318 or 734539318. Listed at 29 retailers as of October 29, 2026, with prices from €829 to €9,058, a €8,229 spread on the same certified stone. Brilliant Earth lists it at €9,058. 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
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG734539318
Dimensions9.29 × 9.35 × 5.77 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
9.29 mm9.35 mm3.09 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG734539318
Side View
Table 57.0%Crown 35.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.9%

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: Oct 29
Current: €9,058 EUR|Low: €829 EUR|High: €9,058 EUR|Avg: €2,634 EUR
Brilliant Earth
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
Retailer 17
November 1, 2026
Retailer 3€829 EUR
Retailer 16€901 EUR
Retailer 11€927 EUR
Retailer 7€961 EUR
Retailer 13€1,119 EUR
Retailer 17€1,147 EUR
Retailer 2€1,476 EUR
Retailer 12€1,530 EUR
Retailer 15€1,983 EUR
Retailer 9€2,138 EUR
Retailer 10€2,171 EUR
Retailer 4€2,232 EUR
Retailer 14€2,702 EUR
Retailer 6€3,265 EUR
Retailer 8€5,174 EUR
Retailer 5€8,681 EUR
Brilliant Earth€9,058 EUR

23 data points across 17 retailers

29 retailers€829 EUR to €9,058 EUR

A
Cheapest Retailer
-
€829 EUR
$926 USD
A
Retailer 2
-
€901 EUR
$1,007 USD
View
A
Retailer 3
-
€927 EUR
$1,036 USD
View
Final sale: no returns
A
Retailer 4
-
€961 EUR
$1,074 USD
View
A
Retailer 5
-
€1,119 EUR
$1,250 USD
View
A
Retailer 6
-
€1,147 EUR
£1,009 GBP
View
A
Retailer 7
-
€1,169 EUR
HK$10,200 HKD
View
A
Retailer 8
-
€1,206 EUR
$1,347 USD
View
A
Retailer 9
-
€1,441 EUR
$1,610 USD
View
A
Retailer 10
-
€1,476 EUR
£1,298 GBP
View
A
Retailer 11
-
€1,530 EUR
View
A
Retailer 12
-
€1,983 EUR
A$3,408 AUD
View
A
Retailer 13
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€2,138 EUR
$2,389 USD
View
A
Retailer 14
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€2,159 EUR
$2,412 USD
View
A
Retailer 15
-
€2,171 EUR
A$3,731 AUD
View
A
Retailer 16
-
€2,232 EUR
ZAR 40,284 ZAR
View
A
Retailer 17
-
€2,458 EUR
$2,746 USD
View
B+
Retailer 18
-
€2,702 EUR
$3,019 USD
View
Retailer 19
-
€2,702 EUR
$3,019 USD
View
Price last confirmed 20 days ago
B+
Retailer 20
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€3,008 EUR
$3,360 USD
View
B+
Retailer 21
-
€3,141 EUR
$3,510 USD
View
B+
Retailer 22
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€3,265 EUR
£2,872 GBP
View
B+
Retailer 23
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€3,343 EUR
$3,734 USD
View
B+
Retailer 24
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€3,379 EUR
SGD 5,101 SGD
View
B+
Retailer 25
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€3,630 EUR
$4,056 USD
View
Retailer 26
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€4,582 EUR
A$7,876 AUD
View
Price last confirmed 29 days ago
Retailer 27
-
€5,174 EUR
$5,780 USD
View
Price last confirmed 13 days ago
B
Retailer 28
-
€8,681 EUR
$9,698 USD
View
Most Expensive
B
Brilliant Earth
16122191A · Oct 31
€9,058 EUR
$10,120 USD
View
28 more retailers have this diamond
Prices start from €829 EURSave up to €8,229 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
€829 EUR