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Round|Natural|GIA

1.51ct K I1 Round Natural Diamond

EX • K/I1 • GIA 6422460858

Certificate GIA 6422460858

Diamond specifications and retailer prices

From $3,744 SGD
As of November 6, 2026
Save $5,006 SGD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,750 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 6422460858. Listed at 8 retailers as of November 5, 2026, with prices from $3,744 to $8,750, a $5,006 spread on the same certified stone. NZ Jewellers lists it at $8,750. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6422460858
Dimensions7.33 × 7.30 × 4.57 mm
L/W Ratio1.00
Top View
7.33 mm7.30 mm1.51 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6422460858
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

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 6
Current: $8,750 SGD|Low: $3,711 SGD|High: $8,750 SGD|Avg: $5,169 SGD
NZ Jewellers
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 5, 2026
Retailer 7$3,744 SGD
Retailer 6$3,915 SGD
Retailer 3$4,039 SGD
Retailer 12$4,086 SGD
Retailer 9$4,550 SGD
Retailer 11$4,550 SGD
Retailer 8$4,725 SGD
Retailer 5$4,796 SGD
Retailer 10$5,250 SGD
Retailer 2$5,639 SGD
Retailer 13$5,975 SGD
Retailer 4$7,102 SGD
NZ Jewellers$8,750 SGD

24 data points across 13 retailers

8 retailers$3,744 SGD to $8,750 SGD

B+
Cheapest Retailer
-
$3,744 SGD
A
Retailer 2
-
$3,915 SGD
View
Retailer 3
-
$4,550 SGD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$4,550 SGD
View
B+
Retailer 5
-
$4,725 SGD
View
B
Retailer 6
-
$5,250 SGD
View
B
Retailer 7
-
$5,639 SGD
View
Most Expensive
C
NZ Jewellers
56c14851-5019-4e7f-a5c6-c9a71134b5aa · Nov 5
$8,750 SGD
$6,850 USD
View
7 more retailers have this diamond
Prices start from $3,744 SGDSave up to $5,006 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
1.51ct Round
$3,744 SGD