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Round|Lab Grown|IGI

4.00ct E FL Round Lab Grown Diamond

EX • E/FL

Diamond specifications and retailer prices

From $3,306 AUD
$2,322 USD
As of October 29, 2026
Save $15,250 AUD (82%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $18,555 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 4ct lab-grown round diamond

This 4ct 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. Listed at 5 retailers as of October 29, 2026, with prices from $3,306 to $18,555, a $15,250 spread on the same certified stone. Blue Nile lists it at $18,555. 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

4.00
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions10.08 × 10.16 × 6.35 mm
L/W Ratio1.01
Top View
10.08 mm10.16 mm4.00 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 54.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.0%

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 29
Current: $18,555 AUD|Low: $3,175 AUD|High: $19,976 AUD|Avg: $8,842 AUD|+43.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 27, 2026
Retailer 2$3,306 AUD
Retailer 5$3,597 AUD
Retailer 4$4,113 AUD
Retailer 3$5,820 AUD
Blue Nile$18,555 AUD
Retailer 6$19,976 AUD

4 data points across 6 retailers

5 retailers$3,306 AUD to $18,555 AUD

A
Cheapest Retailer
-
$3,306 AUD
$2,322 USD
A
Retailer 2
-
$3,597 AUD
$2,527 USD
View
A
Retailer 3
-
$4,113 AUD
$2,889 USD
View
A
Retailer 4
-
$5,820 AUD
$4,088 USD
View
Most Expensive
B
Blue Nile
30353363 · Oct 31
$18,555 AUD
$13,034 USD
View
4 more retailers have this diamond
Prices start from $3,306 AUDSave up to $15,250 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
4.00ct Round
$3,306 AUD