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3.73ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1559185723

Certificate GIA 1559185723

Diamond specifications and retailer prices

From $71,283 NZD
$40,175 USD
As of November 1, 2026
Save $56,330 NZD (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $127,612 NZD 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 GIA 1559185723. Listed at 11 retailers as of November 1, 2026, with prices from $71,283 to $127,612, a $56,330 spread on the same certified stone. MOH London lists it at $127,612. 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
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1559185723
Dimensions9.79 × 9.84 × 6.15 mm
L/W Ratio1.01
Top View
9.79 mm9.84 mm3.73 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559185723
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.7%

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: $127,612 NZD|Low: $71,283 NZD|High: $130,974 NZD|Avg: $90,688 NZD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 4$71,283 NZD
Retailer 10$73,946 NZD
Retailer 5$75,101 NZD
Retailer 11$77,226 NZD
Retailer 3$82,404 NZD
Retailer 9$84,210 NZD
Retailer 7$87,615 NZD
Retailer 8$87,615 NZD
Retailer 6$90,525 NZD
Retailer 2$98,716 NZD
MOH London$127,612 NZD

34 data points across 11 retailers

11 retailers$71,283 NZD to $127,612 NZD

B+
Cheapest Retailer
-
$71,283 NZD
$40,175 USD
B+
Retailer 2
-
$73,946 NZD
$41,676 USD
View
B+
Retailer 3
-
$75,101 NZD
€40,312 EUR
View
B+
Retailer 4
-
$77,226 NZD
$43,525 USD
View
B
Retailer 5
-
$82,404 NZD
$46,443 USD
View
Final sale: no returns
B
Retailer 6
-
$84,210 NZD
$47,461 USD
View
B+
Retailer 7
-
$87,615 NZD
$49,380 USD
View
B+
Retailer 8
-
$87,615 NZD
$49,380 USD
View
B
Retailer 9
-
$90,525 NZD
$51,020 USD
View
B
Retailer 10
-
$98,716 NZD
€52,987 EUR
View
Most Expensive
B
MOH London
9B51C241D · Nov 1
$127,612 NZD
£56,632 GBP
View
10 more retailers have this diamond
Prices start from $71,283 NZDSave up to $56,330 NZD

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+
3.73ct Round
$71,283 NZD