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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 £19,565 GBP
$26,215 USD
As of November 1, 2026
Save £16,678 GBP (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £36,243 GBP 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 £19,565 to £36,243, a £16,678 spread on the same certified stone. MOH London lists it at £36,243. 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: £36,243 GBP|Low: £18,700 GBP|High: £41,552 GBP|Avg: £25,724 GBP|-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 1, 2026
Retailer 5£18,700 GBP
Retailer 2£19,565 GBP
Retailer 13£21,128 GBP
Retailer 10£21,272 GBP
Retailer 9£22,550 GBP
Retailer 11£23,206 GBP
Retailer 6£23,550 GBP
Retailer 3£24,812 GBP
Retailer 12£26,344 GBP
Retailer 8£26,671 GBP
Retailer 7£30,084 GBP
MOH London£36,243 GBP
Retailer 4£41,552 GBP

34 data points across 13 retailers

14 retailers£19,565 GBP to £36,243 GBP

A
Cheapest Retailer
-
£19,565 GBP
$26,215 USD
A
Retailer 2
-
£21,128 GBP
$28,309 USD
View
A
Retailer 3
-
£21,272 GBP
$28,502 USD
View
Final sale: no returns
A
Retailer 4
-
£22,550 GBP
$30,215 USD
View
A
Retailer 5
-
£23,550 GBP
View
Retailer 6
-
£24,174 GBP
$32,390 USD
View
Price last confirmed 34 days ago
Retailer 7
-
£24,367 GBP
$32,649 USD
View
Price last confirmed 33 days ago
B+
Retailer 8
-
£24,812 GBP
$33,245 USD
View
Retailer 9
-
£25,140 GBP
$33,685 USD
View
Price last confirmed 31 days ago
Retailer 10
-
£26,107 GBP
$34,981 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
£26,344 GBP
$35,298 USD
View
B+
Retailer 12
-
£26,671 GBP
€34,034 EUR
View
B+
Retailer 13
-
£30,084 GBP
ZAR 651,199 ZAR
View
Most Expensive
B
MOH London
F1C4BADAE · Nov 1
£36,243 GBP
View
13 more retailers have this diamond
Prices start from £19,565 GBPSave up to £16,678 GBP

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
£19,565 GBP