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Round|Lab Grown|IGI

3.09ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG815611581

Shape and cutting style on the report: Round brilliant

Certificate IGI LG815611581

Diamond specifications and retailer prices

From $637 USD
As of October 26, 2026
Save $2,491 USD (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,740 USD 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 LG815611581 or 815611581. Listed at 20 retailers as of October 26, 2026, with a 391% 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 angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815611581
Dimensions9.43 × 9.39 × 5.70 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
9.43 mm9.39 mm3.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815611581
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: $5,740 USD|Low: $611 USD|High: $5,825 USD|Avg: $1,629 USD|-1.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 17
Retailer 18
October 29, 2026
Retailer 3$637 USD
Retailer 6$693 USD
Retailer 9$713 USD
Retailer 4$739 USD
Retailer 18$739 USD
Retailer 11$906 USD
Retailer 10$1,046 USD
Retailer 17$1,082 USD
Retailer 14$1,085 USD
Retailer 13$1,170 USD
Retailer 15$1,678 USD
Retailer 12$1,715 USD
Retailer 16$1,886 USD
Retailer 5$2,076 USD
Retailer 8$2,520 USD
Retailer 7$2,587 USD
Retailer 2$3,128 USD
Rare Carat$5,740 USD

43 data points across 18 retailers

20 retailers$637 USD to $3,128 USD

A
Cheapest Retailer
-
$637 USD
A
Retailer 2
-
$693 USD
View
A
Retailer 3
-
$713 USD
View
Final sale: no returns
A
Retailer 4
-
$739 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$739 USD
View
A
Retailer 6
-
$906 USD
£713 GBP
View
A
Retailer 7
-
$1,046 USD
View
A
Retailer 8
-
$1,082 USD
View
A
Retailer 9
-
$1,085 USD
View
A
Retailer 10
-
$1,170 USD
£921 GBP
View
A
Retailer 11
-
$1,678 USD
A$2,581 AUD
View
Price last confirmed 8 days ago
A
Retailer 12
-
$1,715 USD
ZAR 27,701 ZAR
View
A
Retailer 13
-
$1,886 USD
View
A
Retailer 14
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$2,076 USD
View
A
Retailer 15
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$2,120 USD
View
A
Retailer 16
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$2,520 USD
View
A
Retailer 17
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$2,549 USD
View
A
Retailer 18
-
$2,587 USD
View
B+
Retailer 19
-
$3,128 USD
£2,463 GBP
View
Most Expensive
B+
Rare Carat
VK 4974_l_815611581 · Oct 21
$5,740 USD
View
Price last confirmed 8 days ago
19 more retailers have this diamond
Prices start from $637 USDSave up to $2,491 USD

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
$637 USD