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Round|Lab Grown|IGI

4.00ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG847640280

Shape and cutting style on the report: Round brilliant

Certificate IGI LG847640280

Diamond specifications and retailer prices

From $1,265 AUD
€846 EUR
As of October 29, 2026
Save $1,822 AUD (59%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,232 AUD at Rare Carat · As of October 21, 2026
View at Rare Carat

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG847640280 or 847640280. Listed at 4 retailers as of October 29, 2026, with a 144% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.00
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847640280
Dimensions10.44 × 10.35 × 6.06 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.44 mm10.35 mm4.00 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847640280
Side View
Table 61.0%Crown 32.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 58.3%

Caratlytics Score

How it works →
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: $3,232 AUD|Low: $1,262 AUD|High: $3,232 AUD|Avg: $2,314 AUD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
October 29, 2026
Retailer 2$1,265 AUD
Retailer 4$1,418 AUD
Retailer 3$3,086 AUD
Rare Carat$3,232 AUD

4 data points across 4 retailers

4 retailers$1,265 AUD to $3,086 AUD

A
Cheapest Retailer
-
$1,265 AUD
€846 EUR
A
Retailer 2
-
$1,418 AUD
$996 USD
View
B
Retailer 3
-
$3,086 AUD
£1,707 GBP
View
Most Expensive
Rare Carat
LGRD40-176344 · Oct 21
$3,232 AUD
$2,270 USD
View
Price last confirmed 9 days ago
3 more retailers have this diamond
Prices start from $1,265 AUDSave up to $1,822 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
$1,265 AUD