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Radiant|Natural|GIA

1.51ct K SI2 Radiant Natural Diamond

VG • K/SI2 • GIA 6451457227

Certificate GIA 6451457227

Diamond specifications and retailer prices

From $3,216 SGD
As of November 7, 2026
Save $1,954 SGD (38%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,186 SGD at NZ Jewellers · As of September 30, 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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6451457227. Listed at 8 retailers as of November 4, 2026, with a 61% 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6451457227
Dimensions6.98 × 5.65 × 3.96 mm
L/W Ratio1.24
Top View
6.98 mm5.65 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6451457227
Side View
Table 68.0%CrownGirdlePavilionCulet: NoneDepth 70.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 7
Current: $3,216 SGD|Low: $3,134 SGD|High: $5,246 SGD|Avg: $3,962 SGD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 1$3,216 SGD
Retailer 2$3,673 SGD
Retailer 4$3,778 SGD
Retailer 3$5,170 SGD

44 data points across 4 retailers

8 retailers$3,216 SGD to $5,170 SGD

Retailer 1
-
$2,959 SGD
Price last confirmed 30 days ago
Retailer 2
-
$2,959 SGD
View
Price last confirmed 30 days ago
Retailer 3
-
$3,095 SGD
View
Price last confirmed 38 days ago
A
Retailer 4
-
$3,216 SGD
View
Retailer 5
-
$3,414 SGD
View
Price last confirmed 39 days ago
B+
Retailer 6
-
$3,673 SGD
View
B+
Retailer 7
-
$5,170 SGD
View
Most Expensive
NZ Jewellers
24dfa38c-b1e9-4334-840a-051430d5e3e4 · Sep 30
$6,186 SGD
$4,827 USD
View
Price last confirmed 37 days ago
7 more retailers have this diamond
Prices start from $3,216 SGDSave up to $1,954 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
$3,216 SGD