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Round|Lab Grown|IGI

3.90ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG804659326

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804659326

Diamond specifications and retailer prices

From $4,530 AUD
$3,182 USD
As of October 30, 2026
Save $14,703 AUD (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $19,233 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.9ct lab-grown round diamond

This 3.9ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804659326 or 804659326. Listed at 12 retailers as of October 30, 2026, with prices from $4,530 to $19,233, a $14,703 spread on the same certified stone. Brilliant Earth lists it at $19,233. 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

3.90
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804659326
Dimensions10.12 × 10.06 × 6.19 mm
L/W Ratio1.01
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
10.12 mm10.06 mm3.90 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804659326
Side View
Table 58.0%Crown 34.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.4%

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 30
Current: $19,233 AUD|Low: $4,343 AUD|High: $23,902 AUD|Avg: $9,695 AUD|-19.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 9$4,530 AUD
Retailer 4$5,467 AUD
Retailer 3$5,801 AUD
Retailer 2$6,005 AUD
Retailer 8$6,734 AUD
Retailer 6$7,153 AUD
Retailer 11$7,725 AUD
Retailer 7$9,574 AUD
Retailer 10$11,726 AUD
Retailer 5$12,016 AUD
Retailer 12$16,971 AUD
Brilliant Earth$19,233 AUD

41 data points across 12 retailers

12 retailers$4,530 AUD to $19,233 AUD

A
Cheapest Retailer
-
$4,530 AUD
$3,182 USD
B+
Retailer 2
-
$5,467 AUD
HK$30,000 HKD
View
B+
Retailer 3
-
$5,801 AUD
$4,075 USD
View
B+
Retailer 4
-
$6,005 AUD
£3,322 GBP
View
B+
Retailer 5
-
$6,734 AUD
$4,730 USD
View
B+
Retailer 6
-
$7,153 AUD
€4,785 EUR
View
B+
Retailer 7
-
$9,574 AUD
$6,725 USD
View
B
Retailer 8
-
$11,726 AUD
$8,237 USD
View
B+
Retailer 9
-
$12,016 AUD
£6,646 GBP
View
B
Retailer 10
-
$15,563 AUD
$10,932 USD
View
B
Retailer 11
-
$17,317 AUD
$12,164 USD
View
Most Expensive
B
Brilliant Earth
20635014A · Oct 30
$19,233 AUD
$13,510 USD
View
11 more retailers have this diamond
Prices start from $4,530 AUDSave up to $14,703 AUD

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
3.90ct Round
$4,530 AUD