CaratHunter
Plans
Round|Natural|GIA

0.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 7558959697

Certificate GIA 7558959697

Diamond specifications and retailer prices

From $488 SGD
As of November 6, 2026
Save $998 SGD (67%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,069 SGD at NZ Jewellers · As of October 23, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7558959697. Listed at 14 retailers as of November 2, 2026, with a 204% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7558959697
Dimensions5.15 × 5.17 × 3.15 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
5.15 mm5.17 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7558959697
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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 6
Current: $2,069 SGD|Low: $488 SGD|High: $2,138 SGD|Avg: $885 SGD|-3.2%
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
November 6, 2026
Retailer 2$488 SGD
Retailer 13$556 SGD
Retailer 3$562 SGD
Retailer 10$593 SGD
Retailer 12$694 SGD
Retailer 4$710 SGD
Retailer 5$710 SGD
Retailer 6$793 SGD
Retailer 11$803 SGD
Retailer 9$843 SGD
Retailer 7$895 SGD
Retailer 8$1,485 SGD
NZ Jewellers$2,069 SGD

36 data points across 13 retailers

14 retailers$488 SGD to $1,485 SGD

A
Cheapest Retailer
-
$488 SGD
A
Retailer 2
-
$556 SGD
View
A
Retailer 3
-
$562 SGD
View
A
Retailer 4
-
$593 SGD
View
Final sale: no returns
Retailer 5
-
$694 SGD
View
Price last confirmed 8 days ago
Retailer 6
-
$710 SGD
View
Price last confirmed 15 days ago
Retailer 7
-
$710 SGD
View
Price last confirmed 10 days ago
Retailer 8
-
$793 SGD
View
Price last confirmed 45 days ago
A
Retailer 9
-
$793 SGD
View
A
Retailer 10
-
$803 SGD
View
B+
Retailer 11
-
$843 SGD
View
B+
Retailer 12
-
$895 SGD
View
B
Retailer 13
-
$1,485 SGD
View
Most Expensive
NZ Jewellers
093759c2-dd4f-48fd-9709-e17d9a3668cf · Oct 23
$2,069 SGD
$1,620 USD
View
Price last confirmed 14 days ago
13 more retailers have this diamond
Prices start from $488 SGDSave up to $998 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
$488 SGD