Round|Natural|GIA

1.30ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6421958848

Certificate GIA 6421958848

Diamond specifications and retailer prices

From $5,717 SGD
As of November 7, 2026
Save $6,385 SGD (53%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $12,102 SGD at NZ Jewellers · As of October 20, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6421958848. Listed at 23 retailers as of November 7, 2026, with a 112% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6421958848
Dimensions7.03 × 7.00 × 4.29 mm
L/W Ratio1.00
Top View
7.03 mm7.00 mm1.30 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
CertificateGIA 6421958848
Side View
Table 57.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.2%

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 7
Current: $8,136 SGD|Low: $5,545 SGD|High: $11,663 SGD|Avg: $7,649 SGD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 6$5,761 SGD
Retailer 8$5,897 SGD
Retailer 9$6,050 SGD
Retailer 2$6,338 SGD
Retailer 7$6,555 SGD
Retailer 4$6,944 SGD
Retailer 5$7,901 SGD
Retailer 1$8,136 SGD
Retailer 3$11,463 SGD

41 data points across 9 retailers

23 retailers$5,717 SGD to $12,102 SGD

B+
Cheapest Retailer
-
$5,717 SGD
B+
Retailer 2
-
$5,761 SGD
View
B+
Retailer 3
-
$5,897 SGD
View
B+
Retailer 4
-
$6,050 SGD
View
Final sale: no returns
B+
Retailer 5
-
$6,338 SGD
View
Retailer 6
-
$6,555 SGD
View
Price last confirmed 51 days ago
B+
Retailer 7
-
$6,555 SGD
View
Retailer 8
-
$6,555 SGD
View
Price last confirmed 30 days ago
Retailer 9
-
$6,555 SGD
View
Price last confirmed 39 days ago
Retailer 10
-
$6,555 SGD
View
Price last confirmed 16 days ago
B+
Retailer 11
-
$6,944 SGD
View
Retailer 12
-
$7,564 SGD
View
Price last confirmed 29 days ago
Retailer 13
-
$7,564 SGD
View
Price last confirmed 46 days ago
Retailer 14
-
$7,564 SGD
View
Price last confirmed 17 days ago
B+
Retailer 15
-
$7,564 SGD
View
B+
Retailer 16
-
$7,901 SGD
View
Retailer 17
-
$7,983 SGD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
$8,136 SGD
View
B
Retailer 19
-
$11,463 SGD
View
B
Retailer 20
-
$12,102 SGD
View
Retailer 21
-
$12,102 SGD
View
Price last confirmed 49 days ago
Retailer 22
-
$12,102 SGD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
d35773a2-c96c-47b8-9da4-5526e54ccbe6 · Oct 20
$12,102 SGD
$9,443 USD
View
Price last confirmed 18 days ago
22 more retailers have this diamond
Prices start from $5,717 SGDSave up to $6,385 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+
1.30ct Round
$5,717 SGD