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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 $31,444 SGD
₹2,342,506 INR
As of November 1, 2026
Save $11,249 SGD (26%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $53,536 SGD 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $53,536 SGD|Low: $31,379 SGD|High: $73,061 SGD|Avg: $39,637 SGD|+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$31,444 SGD
Retailer 10$32,817 SGD
Retailer 9$33,539 SGD
Retailer 5$35,605 SGD
Retailer 8$37,387 SGD
Retailer 6$40,502 SGD
Retailer 7$42,061 SGD
Retailer 3$42,692 SGD
Retailer 4$43,093 SGD
MOH London$53,536 SGD

39 data points across 10 retailers

9 retailers$31,444 SGD to $42,692 SGD

A
Cheapest Retailer
-
$31,444 SGD
₹2,342,506 INR
Retailer 2
-
$32,817 SGD
$25,670 USD
View
Price last confirmed 35 days ago
Retailer 3
-
$35,283 SGD
$27,599 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$39,257 SGD
$30,708 USD
View
Price last confirmed 33 days ago
Retailer 5
-
$40,502 SGD
$31,682 USD
View
Price last confirmed 31 days ago
Retailer 6
-
$42,061 SGD
$32,901 USD
View
Price last confirmed 33 days ago
A
Retailer 7
-
$42,692 SGD
€31,805 EUR
View
Retailer 8
-
$43,093 SGD
ZAR 544,560 ZAR
View
Price last confirmed 31 days ago
Most Expensive
MOH London
27E1CBE0E · Oct 1
$53,536 SGD
£32,974 GBP
View
Price last confirmed 31 days ago
8 more retailers have this diamond
Prices start from $31,444 SGDSave up to $11,249 SGD

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
$31,444 SGD