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Round|Natural|IGI

3.73ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 773617172

Shape and cutting style on the report: Round brilliant

Certificate IGI 773617172

Diamond specifications and retailer prices

From $37,320 AUD
$26,215 USD
As of November 1, 2026
Save $31,814 AUD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $69,133 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 3.73ct natural round diamond

This 3.73ct 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 773617172. Listed at 14 retailers as of November 1, 2026, with prices from $37,320 to $69,133, a $31,814 spread on the same certified stone. MOH London lists it at $69,133. 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

3.73
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.8°
OriginNatural
Grading LabIGI
CertificateIGI 773617172
Dimensions9.93 × 10.00 × 6.14 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
9.93 mm10.00 mm3.73 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 773617172
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.6%

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: $69,133 AUD|Low: $35,670 AUD|High: $79,259 AUD|Avg: $49,072 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 5$35,670 AUD
Retailer 7$37,320 AUD
Retailer 13$40,301 AUD
Retailer 10$40,575 AUD
Retailer 9$43,014 AUD
Retailer 11$44,265 AUD
Retailer 2$44,922 AUD
Retailer 3$47,328 AUD
Retailer 12$50,250 AUD
Retailer 6$50,648 AUD
Retailer 8$57,384 AUD
MOH London$69,133 AUD
Retailer 4$79,259 AUD

35 data points across 13 retailers

14 retailers$37,320 AUD to $69,133 AUD

A
Cheapest Retailer
-
$37,320 AUD
$26,215 USD
A
Retailer 2
-
$40,301 AUD
$28,309 USD
View
A
Retailer 3
-
$40,575 AUD
$28,502 USD
View
Final sale: no returns
A
Retailer 4
-
$43,014 AUD
$30,215 USD
View
A
Retailer 5
-
$44,922 AUD
£24,846 GBP
View
Retailer 6
-
$46,110 AUD
$32,390 USD
View
Price last confirmed 35 days ago
Retailer 7
-
$46,479 AUD
$32,649 USD
View
Price last confirmed 33 days ago
B+
Retailer 8
-
$47,328 AUD
$33,245 USD
View
Retailer 9
-
$47,954 AUD
$33,685 USD
View
Price last confirmed 31 days ago
Retailer 10
-
$49,799 AUD
$34,981 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
$50,250 AUD
$35,298 USD
View
B+
Retailer 12
-
$50,648 AUD
€33,883 EUR
View
B+
Retailer 13
-
$57,384 AUD
ZAR 651,199 ZAR
View
Most Expensive
B
MOH London
F1C4BADAE · Nov 1
$69,133 AUD
£38,238 GBP
View
13 more retailers have this diamond
Prices start from $37,320 AUDSave up to $31,814 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
3.73ct Round
$37,320 AUD