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Round|Natural|IGI

3.81ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 610308387

Shape and cutting style on the report: Round brilliant

Certificate IGI 610308387

Diamond specifications and retailer prices

From $35,015 AUD
₹2,342,506 INR
As of November 1, 2026
Save $12,526 AUD (26%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $59,616 AUD at MOH London · As of October 1, 2026
View at MOH London

About this 3.81ct natural round diamond

This 3.81ct 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 IGI 610308387. Listed at 9 retailers as of October 31, 2026, with a 36% 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

3.81
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 610308387
Dimensions9.91 × 9.80 × 6.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
9.91 mm9.80 mm3.81 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 610308387
Side View
Table 56.0%Crown 36.4°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.7%

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: Nov 1
Current: $59,616 AUD|Low: $34,943 AUD|High: $81,359 AUD|Avg: $44,180 AUD|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$35,015 AUD
Retailer 10$36,544 AUD
Retailer 9$37,348 AUD
Retailer 5$39,648 AUD
Retailer 8$41,633 AUD
Retailer 6$45,102 AUD
Retailer 7$46,838 AUD
Retailer 3$47,541 AUD
Retailer 4$47,987 AUD
MOH London$59,616 AUD

38 data points across 10 retailers

9 retailers$35,015 AUD to $47,541 AUD

A
Cheapest Retailer
-
$35,015 AUD
₹2,342,506 INR
Retailer 2
-
$36,544 AUD
$25,670 USD
View
Price last confirmed 35 days ago
Retailer 3
-
$39,290 AUD
$27,599 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$43,716 AUD
$30,708 USD
View
Price last confirmed 33 days ago
Retailer 5
-
$45,102 AUD
$31,682 USD
View
Price last confirmed 31 days ago
Retailer 6
-
$46,838 AUD
$32,901 USD
View
Price last confirmed 33 days ago
A
Retailer 7
-
$47,541 AUD
€31,805 EUR
View
Retailer 8
-
$47,987 AUD
ZAR 544,560 ZAR
View
Price last confirmed 32 days ago
Most Expensive
MOH London
27E1CBE0E · Oct 1
$59,616 AUD
£32,974 GBP
View
Price last confirmed 31 days ago
8 more retailers have this diamond
Prices start from $35,015 AUDSave up to $12,526 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
3.81ct Round
$35,015 AUD