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Round|Natural|GIA

1.30ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2528810151

Certificate GIA 2528810151

Diamond specifications and retailer prices

From $3,417 SGD
As of November 4, 2026
Save $4,058 SGD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,808 SGD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2528810151. Listed at 18 retailers as of November 4, 2026, with a 119% 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

1.30
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
Crown angle33°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2528810151
Dimensions6.97 × 7.00 × 4.31 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.97 mm7.00 mm1.30 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
CertificateGIA 2528810151
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.7%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $4,750 SGD|Low: $3,417 SGD|High: $7,663 SGD|Avg: $4,719 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$3,417 SGD
Retailer 7$3,569 SGD
Retailer 8$3,981 SGD
Retailer 2$4,137 SGD
Retailer 6$4,285 SGD
Retailer 11$4,482 SGD
Retailer 4$4,610 SGD
Retailer 1$4,750 SGD
Retailer 3$4,850 SGD
Retailer 5$5,206 SGD
Retailer 9$7,475 SGD

30 data points across 11 retailers

18 retailers$3,417 SGD to $7,475 SGD

A
Cheapest Retailer
-
$3,417 SGD
A
Retailer 2
-
$3,569 SGD
View
A
Retailer 3
-
$3,981 SGD
View
A
Retailer 4
-
$4,072 SGD
View
A
Retailer 5
-
$4,137 SGD
View
Final sale: no returns
A
Retailer 6
-
$4,191 SGD
View
A
Retailer 7
-
$4,196 SGD
View
A
Retailer 8
-
$4,285 SGD
View
Retailer 9
-
$4,482 SGD
View
Price last confirmed 17 days ago
Retailer 10
-
$4,482 SGD
View
Price last confirmed 21 days ago
A
Retailer 11
-
$4,610 SGD
View
Retailer 12
-
$4,654 SGD
View
Price last confirmed 22 days ago
A
Retailer 13
-
$4,750 SGD
View
Retailer 14
-
$4,850 SGD
View
Price last confirmed 29 days ago
Retailer 15
-
$5,172 SGD
View
Price last confirmed 19 days ago
A
Retailer 16
-
$5,206 SGD
View
B
Retailer 17
-
$7,475 SGD
View
Most Expensive
NZ Jewellers
850537c0-77a6-497c-ab10-3d486638b5d1 · Oct 17
$7,808 SGD
$6,113 USD
View
Price last confirmed 19 days ago
17 more retailers have this diamond
Prices start from $3,417 SGDSave up to $4,058 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
1.30ct Round
$3,417 SGD