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Round|Natural|GIA

4.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 5231250367

Certificate GIA 5231250367

Diamond specifications and retailer prices

From $84,878 AUD
$59,622 USD
As of November 1, 2026
Save $61,394 AUD (42%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $146,272 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 4ct natural round diamond

This 4ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5231250367. Listed at 13 retailers as of November 1, 2026, with prices from $84,878 to $146,272, a $61,394 spread on the same certified stone. MOH London lists it at $146,272. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5231250367
Dimensions10.24 × 10.17 × 6.16 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
10.24 mm10.17 mm4.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231250367
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $146,272 AUD|Low: $84,878 AUD|High: $148,035 AUD|Avg: $107,562 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 5$84,878 AUD
Retailer 7$88,846 AUD
Retailer 6$90,598 AUD
Retailer 2$93,108 AUD
Retailer 3$113,137 AUD
Retailer 4$117,369 AUD
MOH London$146,272 AUD

41 data points across 7 retailers

13 retailers$84,878 AUD to $146,272 AUD

B+
Cheapest Retailer
-
$84,878 AUD
$59,622 USD
Retailer 2
-
$88,846 AUD
View
Price last confirmed 29 days ago
B
Retailer 3
-
$90,598 AUD
$63,640 USD
View
B+
Retailer 4
-
$93,108 AUD
£51,499 GBP
View
B
Retailer 5
-
$93,659 AUD
$65,790 USD
View
B
Retailer 6
-
$95,003 AUD
$66,734 USD
View
B
Retailer 7
-
$97,561 AUD
$68,531 USD
View
B
Retailer 8
-
$97,561 AUD
$68,531 USD
View
B
Retailer 9
-
$101,463 AUD
$71,272 USD
View
B
Retailer 10
-
$105,366 AUD
$74,014 USD
View
B
Retailer 11
-
$113,137 AUD
€75,688 EUR
View
B
Retailer 12
-
$117,369 AUD
ZAR 1,331,913 ZAR
View
Most Expensive
B
MOH London
A7ECBE6E4 · Nov 1
$146,272 AUD
£80,904 GBP
View
12 more retailers have this diamond
Prices start from $84,878 AUDSave up to $61,394 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.

B+
4.00ct Round
$84,878 AUD