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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

VG • K/SI2 • GIA 6291362550

Certificate GIA 6291362550

Diamond specifications and retailer prices

From $474 SGD
As of November 1, 2026
Save $798 SGD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,113 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6291362550. Listed at 14 retailers as of November 1, 2026, with a 168% 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

0.51
Carat
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6291362550
Dimensions5.01 × 4.98 × 3.21 mm
L/W Ratio1.01
Top View
5.01 mm4.98 mm0.51 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6291362550
Side View
Table 57.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 64.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,113 SGD|Low: $392 SGD|High: $2,113 SGD|Avg: $710 SGD|+21.7%
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
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 15$474 SGD
Retailer 7$522 SGD
Retailer 16$552 SGD
Retailer 5$576 SGD
Retailer 2$585 SGD
Retailer 4$594 SGD
Retailer 6$594 SGD
Retailer 3$636 SGD
Retailer 12$636 SGD
Retailer 9$680 SGD
Retailer 14$718 SGD
Retailer 8$747 SGD
Retailer 13$751 SGD
Retailer 10$834 SGD
Retailer 11$1,272 SGD
NZ Jewellers$2,113 SGD

26 data points across 16 retailers

14 retailers$474 SGD to $1,272 SGD

B+
Cheapest Retailer
-
$474 SGD
B+
Retailer 2
-
$552 SGD
View
Retailer 3
-
$576 SGD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
$585 SGD
View
Retailer 5
-
$594 SGD
View
Price last confirmed 9 days ago
Retailer 6
-
$594 SGD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$636 SGD
View
B+
Retailer 8
-
$636 SGD
View
B+
Retailer 9
-
$680 SGD
View
B+
Retailer 10
-
$718 SGD
View
B
Retailer 11
-
$751 SGD
View
B
Retailer 12
-
$834 SGD
View
C
Retailer 13
-
$1,272 SGD
View
Most Expensive
NZ Jewellers
dd197ee9-5caf-4acd-8558-c99939f4f2f5 · Oct 30
$2,113 SGD
$1,654 USD
View
Price last confirmed 7 days ago
13 more retailers have this diamond
Prices start from $474 SGDSave up to $798 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.

B+
0.51ct Round
$474 SGD