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Radiant|Natural|GIA

1.51ct K SI1 Radiant Natural Diamond

VG • K/SI1 • GIA 6525056251

Certificate GIA 6525056251

Diamond specifications and retailer prices

From $3,546 SGD
As of November 4, 2026
Save $3,745 SGD (51%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,617 SGD at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6525056251. Listed at 18 retailers as of November 4, 2026, with a 106% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6525056251
Dimensions7.57 × 5.58 × 3.88 mm
L/W Ratio1.36
Top View
7.57 mm5.58 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6525056251
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.5%

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 4
Current: $4,523 SGD|Low: $3,448 SGD|High: $7,399 SGD|Avg: $4,873 SGD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 8$3,448 SGD
Retailer 6$3,988 SGD
Retailer 9$4,113 SGD
Retailer 2$4,241 SGD
Retailer 7$4,491 SGD
Retailer 1$4,523 SGD
Retailer 3$5,089 SGD
Retailer 4$5,335 SGD
Retailer 5$7,291 SGD

40 data points across 9 retailers

18 retailers$3,546 SGD to $7,291 SGD

Retailer 1
-
$3,448 SGD
Price last confirmed 17 days ago
A
Retailer 2
-
$3,546 SGD
View
A
Retailer 3
-
$3,550 SGD
View
A
Retailer 4
-
$3,719 SGD
View
Retailer 5
-
$3,960 SGD
View
Price last confirmed 12 days ago
Retailer 6
-
$3,960 SGD
View
Price last confirmed 13 days ago
B+
Retailer 7
-
$3,988 SGD
View
Retailer 8
-
$4,113 SGD
View
Price last confirmed 13 days ago
B+
Retailer 9
-
$4,163 SGD
View
A
Retailer 10
-
$4,241 SGD
View
B+
Retailer 11
-
$4,491 SGD
View
B+
Retailer 12
-
$4,523 SGD
View
Retailer 13
-
$4,570 SGD
View
Price last confirmed 15 days ago
Retailer 14
-
$4,955 SGD
View
Price last confirmed 15 days ago
B+
Retailer 15
-
$5,089 SGD
View
B+
Retailer 16
-
$5,335 SGD
View
B
Retailer 17
-
$7,291 SGD
View
Most Expensive
NZ Jewellers
b03f8a28-4be2-450e-9357-369d22c74ae1 · Oct 24
$7,617 SGD
$5,943 USD
View
Price last confirmed 13 days ago
17 more retailers have this diamond
Prices start from $3,546 SGDSave up to $3,745 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 Radiant
$3,546 SGD