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3.50ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 533209970

Shape and cutting style on the report: Round brilliant

Certificate IGI 533209970

Diamond specifications and retailer prices

From $20,487 USD
As of November 5, 2026
Save $10,959 USD (35%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $31,446 USD at MOH London · As of November 4, 2026
View at MOH London

About this 3.5ct natural round diamond

This 3.5ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 533209970. Listed at 22 retailers as of November 4, 2026, with prices from $20,487 to $31,446, a $10,959 spread on the same certified stone. MOH London lists it at $31,446. 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

3.50
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.6°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 533209970
Dimensions9.61 × 9.66 × 5.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
9.61 mm9.66 mm3.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 533209970
Side View
Table 61.5%Crown 34.6°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.1%

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 5
Current: $31,446 USD|Low: $20,233 USD|High: $31,910 USD|Avg: $23,223 USD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$20,233 USD
Retailer 8$20,487 USD
Retailer 6$20,750 USD
Retailer 9$21,589 USD
Retailer 5$22,255 USD
Retailer 7$22,285 USD
Retailer 3$22,290 USD
Retailer 4$24,336 USD
Retailer 2$25,990 USD
MOH London$31,446 USD

18 data points across 10 retailers

22 retailers$20,487 USD to $31,446 USD

A
Cheapest Retailer
-
$20,487 USD
A
Retailer 2
-
$20,750 USD
View
B+
Retailer 3
-
$22,255 USD
View
Retailer 4
-
$22,285 USD
View
Price last confirmed 21 days ago
Retailer 5
-
$22,285 USD
View
Price last confirmed 8 days ago
Retailer 6
-
$22,285 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$22,290 USD
View
B+
Retailer 8
-
$23,399 USD
View
Retailer 9
-
$23,399 USD
View
Price last confirmed 22 days ago
Retailer 10
-
$23,399 USD
View
Price last confirmed 12 days ago
Retailer 11
-
$23,399 USD
View
Price last confirmed 8 days ago
Retailer 12
-
$24,142 USD
View
Price last confirmed 27 days ago
Retailer 13
-
$24,142 USD
View
Price last confirmed 8 days ago
Retailer 14
-
$24,142 USD
View
Price last confirmed 23 days ago
B+
Retailer 15
-
$24,336 USD
View
Retailer 16
-
$25,070 USD
View
Price last confirmed 24 days ago
B+
Retailer 17
-
$25,070 USD
View
Retailer 18
-
$25,070 USD
View
Price last confirmed 16 days ago
B+
Retailer 19
-
$25,990 USD
View
Retailer 20
-
$28,601 USD
View
Price last confirmed 23 days ago
Retailer 21
-
$28,601 USD
View
Price last confirmed 17 days ago
Most Expensive
B
MOH London
18017C5BC · Nov 4
$31,446 USD
£24,761 GBP
View
21 more retailers have this diamond
Prices start from $20,487 USDSave up to $10,959 USD

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
3.50ct Round
$20,487 USD