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Round|Natural|GIA

1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5546985835

Certificate GIA 5546985835

Diamond specifications and retailer prices

From $2,939 SGD
As of November 6, 2026
Save $8,093 SGD (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $11,032 SGD at Wholesale Diamonds Direct · As of November 4, 2026
View at Wholesale Diamonds Direct

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5546985835. Listed at 18 retailers as of November 4, 2026, with prices from $2,939 to $11,032, a $8,093 spread on the same certified stone. Wholesale Diamonds Direct lists it at $11,032. 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

1.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 5546985835
Dimensions7.27 × 7.32 × 4.58 mm
L/W Ratio1.01
Top View
7.27 mm7.32 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546985835
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.3%

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 6
Current: $2,939 SGD|Low: $2,939 SGD|High: $6,780 SGD|Avg: $4,284 SGD|-2.7%
Retailer 1
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
Retailer 15
November 6, 2026
Retailer 1$2,939 SGD
Retailer 13$3,486 SGD
Retailer 12$3,487 SGD
Retailer 3$3,728 SGD
Retailer 2$3,892 SGD
Retailer 4$3,892 SGD
Retailer 7$3,892 SGD
Retailer 5$4,041 SGD
Retailer 8$4,071 SGD
Retailer 6$4,073 SGD
Retailer 9$4,259 SGD
Retailer 15$4,490 SGD
Retailer 10$4,749 SGD
Retailer 11$6,490 SGD
Retailer 14$6,780 SGD

32 data points across 15 retailers

18 retailers$2,939 SGD to $11,032 SGD

A
Cheapest Retailer
-
$2,939 SGD
A
Retailer 2
-
$3,486 SGD
View
A
Retailer 3
-
$3,487 SGD
View
A
Retailer 4
-
$3,728 SGD
View
Retailer 5
-
$3,859 SGD
View
Price last confirmed 60 days ago
A
Retailer 6
-
$3,892 SGD
View
Retailer 7
-
$3,892 SGD
View
Price last confirmed 12 days ago
A
Retailer 8
-
$3,892 SGD
View
A
Retailer 9
-
$4,041 SGD
View
A
Retailer 10
-
$4,071 SGD
View
A
Retailer 11
-
$4,073 SGD
View
A
Retailer 12
-
$4,259 SGD
View
Retailer 13
-
$4,451 SGD
View
Price last confirmed 60 days ago
A
Retailer 14
-
$4,490 SGD
View
A
Retailer 15
-
$4,749 SGD
View
B+
Retailer 16
-
$6,490 SGD
View
B
Retailer 17
-
$6,780 SGD
View
Most Expensive
B
Wholesale Diamonds Direct
44512617 · Nov 4
$11,032 SGD
$8,637 USD
View
17 more retailers have this diamond
Prices start from $2,939 SGDSave up to $8,093 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
$2,939 SGD