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Round|Natural|GIA

0.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 1399547329

Certificate GIA 1399547329

Diamond specifications and retailer prices

From $635 SGD
₹47,291 INR
As of November 1, 2026
Save $2,128 SGD (77%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,763 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1399547329. Listed at 20 retailers as of October 30, 2026, with prices from $635 to $2,763, a $2,128 spread on the same certified stone. NZ Jewellers lists it at $2,763. 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

0.51
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1399547329
Dimensions5.13 × 5.10 × 3.17 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather
Top View
5.13 mm5.10 mm0.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1399547329
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $635 SGD|Low: $633 SGD|High: $2,059 SGD|Avg: $1,087 SGD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 1$635 SGD
Retailer 7$812 SGD
Retailer 6$816 SGD
Retailer 8$997 SGD
Retailer 2$1,046 SGD
Retailer 4$1,073 SGD
Retailer 5$1,146 SGD
Retailer 3$2,034 SGD

28 data points across 8 retailers

20 retailers$635 SGD to $2,763 SGD

A
Cheapest Retailer
-
$635 SGD
₹47,291 INR
A
Retailer 2
-
$736 SGD
HK$4,500 HKD
View
A
Retailer 3
-
$812 SGD
$635 USD
View
Final sale: no returns
A
Retailer 4
-
$816 SGD
A$982 AUD
View
A
Retailer 5
-
$834 SGD
$652 USD
View
Retailer 6
-
$881 SGD
$689 USD
View
Price last confirmed 24 days ago
A
Retailer 7
-
$881 SGD
$689 USD
View
Retailer 8
-
$893 SGD
$699 USD
View
Price last confirmed 74 days ago
A
Retailer 9
-
$902 SGD
View
A
Retailer 10
-
$914 SGD
$715 USD
View
A
Retailer 11
-
$997 SGD
$780 USD
View
B+
Retailer 12
-
$1,016 SGD
$795 USD
View
B+
Retailer 13
-
$1,046 SGD
£644 GBP
View
B+
Retailer 14
-
$1,050 SGD
$821 USD
View
B+
Retailer 15
-
$1,073 SGD
£661 GBP
View
B+
Retailer 16
-
$1,146 SGD
€854 EUR
View
B
Retailer 17
-
$1,309 SGD
$1,024 USD
View
B
Retailer 18
-
$1,957 SGD
£1,205 GBP
View
B
Retailer 19
-
$2,034 SGD
£1,253 GBP
View
Most Expensive
B
NZ Jewellers
b3b819bf-d7d2-48a7-b883-b263698d833f · Oct 30
$2,763 SGD
$2,161 USD
View
19 more retailers have this diamond
Prices start from $635 SGDSave up to $2,128 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
0.51ct Round
$635 SGD