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Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

VG • H/SI2 • GIA 6412347475

Certificate GIA 6412347475

Diamond specifications and retailer prices

From $893 SGD
As of November 5, 2026
Save $922 SGD (51%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,112 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6412347475. Listed at 13 retailers as of November 4, 2026, with a 103% 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
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6412347475
Dimensions5.06 × 5.04 × 3.22 mm
L/W Ratio1.00
Top View
5.06 mm5.04 mm0.51 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6412347475
Side View
Table 57.0%Crown 35.5°Girdle: STK-THKPavilion 41.4°Culet: NoneDepth 63.8%

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 5
Current: $1,276 SGD|Low: $917 SGD|High: $1,839 SGD|Avg: $1,252 SGD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$917 SGD
Retailer 4$971 SGD
Retailer 7$1,031 SGD
Retailer 2$1,174 SGD
Retailer 1$1,276 SGD
Retailer 3$1,392 SGD
Retailer 5$1,815 SGD

40 data points across 7 retailers

13 retailers$893 SGD to $1,815 SGD

B+
Cheapest Retailer
-
$893 SGD
B+
Retailer 2
-
$917 SGD
View
Final sale: no returns
B+
Retailer 3
-
$971 SGD
View
Retailer 4
-
$992 SGD
View
Price last confirmed 53 days ago
B+
Retailer 5
-
$1,007 SGD
View
B+
Retailer 6
-
$1,031 SGD
View
Retailer 7
-
$1,144 SGD
View
Price last confirmed 10 days ago
B
Retailer 8
-
$1,161 SGD
View
B+
Retailer 9
-
$1,174 SGD
View
B
Retailer 10
-
$1,276 SGD
View
B
Retailer 11
-
$1,392 SGD
View
B
Retailer 12
-
$1,815 SGD
View
Most Expensive
NZ Jewellers
5361b433-df0f-4f78-8a84-cfd578b6f97c · Oct 30
$3,112 SGD
$2,436 USD
View
Price under review
12 more retailers have this diamond
Prices start from $893 SGDSave up to $922 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
$893 SGD