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Round|Natural|GIA

4.25ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6541127304

Certificate GIA 6541127304

Diamond specifications and retailer prices

From $44,584 SGD
As of October 31, 2026
Save $31,895 SGD (42%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $76,479 SGD at MOH London · As of November 2, 2026
View at MOH London

About this 4.25ct natural round diamond

This 4.25ct 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 GIA 6541127304. Listed at 23 retailers as of October 31, 2026, with prices from $44,584 to $76,479, a $31,895 spread on the same certified stone. MOH London lists it at $76,479. 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

4.25
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6541127304
Dimensions10.40 × 10.31 × 6.40 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
10.40 mm10.31 mm4.25 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541127304
Side View
Table 60.0%Crown 33°Girdle: Slightly ThickPavilion 41.8°Culet: NoneDepth 61.9%

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: Oct 31
Current: $76,479 SGD|Low: $44,584 SGD|High: $80,151 SGD|Avg: $56,635 SGD|-4.3%
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
Retailer 14
November 5, 2026
Retailer 14$44,584 SGD
Retailer 13$44,689 SGD
Retailer 3$44,814 SGD
Retailer 2$45,652 SGD
Retailer 11$46,168 SGD
Retailer 4$47,424 SGD
Retailer 9$48,214 SGD
Retailer 8$48,558 SGD
Retailer 5$50,562 SGD
Retailer 10$52,368 SGD
Retailer 6$58,531 SGD
Retailer 7$59,087 SGD
Retailer 12$61,367 SGD
MOH London$76,479 SGD

36 data points across 14 retailers

23 retailers$44,584 SGD to $76,479 SGD

A
Cheapest Retailer
-
$44,584 SGD
A
Retailer 2
-
$44,689 SGD
View
A
Retailer 3
-
$44,814 SGD
View
A
Retailer 4
-
$45,652 SGD
View
A
Retailer 5
-
$46,168 SGD
View
A
Retailer 6
-
$47,424 SGD
View
B+
Retailer 7
-
$48,214 SGD
View
A
Retailer 8
-
$48,558 SGD
View
B+
Retailer 9
-
$50,562 SGD
View
Retailer 10
-
$50,710 SGD
View
Price last confirmed 21 days ago
B+
Retailer 11
-
$52,368 SGD
View
Retailer 12
-
$52,824 SGD
View
Price last confirmed 48 days ago
Retailer 13
-
$52,824 SGD
View
Price last confirmed 20 days ago
Retailer 14
-
$52,824 SGD
View
Price last confirmed 22 days ago
Retailer 15
-
$54,937 SGD
View
Price last confirmed 45 days ago
Retailer 16
-
$54,937 SGD
View
Price last confirmed 19 days ago
Retailer 17
-
$56,768 SGD
View
Price last confirmed 14 days ago
Retailer 18
-
$57,049 SGD
View
Price last confirmed 45 days ago
Retailer 19
-
$57,049 SGD
View
Price last confirmed 19 days ago
Retailer 20
-
$58,531 SGD
View
Price last confirmed 10 days ago
B+
Retailer 21
-
$59,087 SGD
View
B
Retailer 22
-
$61,367 SGD
View
Most Expensive
B
MOH London
5243C3FC5 · Nov 2
$76,479 SGD
£47,146 GBP
View
22 more retailers have this diamond
Prices start from $44,584 SGDSave up to $31,895 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
4.25ct Round
$44,584 SGD