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Round|Lab Grown|IGI

3.09ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG731581171

Shape and cutting style on the report: Round brilliant

Certificate IGI LG731581171

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)
27 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 LG731581171 or 731581171. Listed at 27 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 angle33.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731581171
Dimensions9.40 × 9.44 × 5.72 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
9.40 mm9.44 mm3.09 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731581171
Side View
Table 57.0%Crown 33.7°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.7%

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: €13,122 EUR|Avg: €2,503 EUR|-31.0%
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
October 31, 2026
Retailer 3€829 EUR
Retailer 17€901 EUR
Retailer 16€927 EUR
Retailer 6€961 EUR
Retailer 11€1,119 EUR
Retailer 5€1,150 EUR
Retailer 8€1,441 EUR
Retailer 12€1,463 EUR
Retailer 10€1,530 EUR
Retailer 13€1,983 EUR
Retailer 7€2,138 EUR
Retailer 2€2,171 EUR
Retailer 14€2,232 EUR
Retailer 4€2,702 EUR
Retailer 15€3,277 EUR
Retailer 9€4,614 EUR
Brilliant Earth€9,058 EUR

30 data points across 17 retailers

27 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
Retailer 6
-
€1,150 EUR
£1,011 GBP
View
Price last confirmed 14 days ago
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
-
€1,463 EUR
£1,287 GBP
View
A
Retailer 11
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€1,530 EUR
View
A
Retailer 12
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€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
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€2,171 EUR
A$3,731 AUD
View
A
Retailer 16
-
€2,232 EUR
ZAR 40,284 ZAR
View
Retailer 17
-
€2,458 EUR
$2,746 USD
View
Price last confirmed 15 days ago
B+
Retailer 18
-
€2,702 EUR
$3,019 USD
View
B+
Retailer 19
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€3,008 EUR
$3,360 USD
View
B+
Retailer 20
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€3,141 EUR
$3,510 USD
View
B+
Retailer 21
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€3,277 EUR
£2,883 GBP
View
B+
Retailer 22
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€3,343 EUR
$3,734 USD
View
B+
Retailer 23
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€3,379 EUR
SGD 5,101 SGD
View
B+
Retailer 24
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€3,630 EUR
$4,056 USD
View
Retailer 25
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€4,614 EUR
A$7,931 AUD
View
Price last confirmed 26 days ago
B
Retailer 26
-
€8,681 EUR
$9,698 USD
View
Most Expensive
B
Brilliant Earth
15998919A · Oct 31
€9,058 EUR
$10,120 USD
View
26 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