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Round|Natural|GIA

1.30ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 6555956405

Certificate GIA 6555956405

Diamond specifications and retailer prices

From $6,125 SGD
As of November 5, 2026
Save $1,829 SGD (23%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $10,903 SGD at NZ Jewellers · As of October 6, 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 6555956405. Listed at 12 retailers as of November 5, 2026, with a 30% 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
FluorescenceMedium
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6555956405
Dimensions6.96 × 7.01 × 4.36 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
6.96 mm7.01 mm1.30 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6555956405
Side View
Table 57.0%Crown 35°Girdle: MediumPavilion 41.4°Culet: NoneDepth 62.5%

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: $10,903 SGD|Low: $5,549 SGD|High: $10,903 SGD|Avg: $6,629 SGD
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
Retailer 14
November 5, 2026
Retailer 5$5,549 SGD
Retailer 13$5,685 SGD
Retailer 6$5,991 SGD
Retailer 10$6,125 SGD
Retailer 7$6,233 SGD
Retailer 3$6,475 SGD
Retailer 11$6,519 SGD
Retailer 12$6,519 SGD
Retailer 4$6,710 SGD
Retailer 9$6,798 SGD
Retailer 8$7,320 SGD
Retailer 14$7,522 SGD
Retailer 2$7,954 SGD
NZ Jewellers$10,903 SGD

18 data points across 14 retailers

12 retailers$6,125 SGD to $7,954 SGD

Retailer 1
-
$5,685 SGD
Price last confirmed 10 days ago
B+
Retailer 2
-
$6,125 SGD
View
B+
Retailer 3
-
$6,233 SGD
View
Retailer 4
-
$6,475 SGD
View
Price last confirmed 43 days ago
B+
Retailer 5
-
$6,519 SGD
View
Retailer 6
-
$6,519 SGD
View
Price last confirmed 15 days ago
Retailer 7
-
$6,710 SGD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$6,798 SGD
View
B
Retailer 9
-
$7,320 SGD
View
B+
Retailer 10
-
$7,522 SGD
View
B+
Retailer 11
-
$7,954 SGD
View
Most Expensive
NZ Jewellers
6ef02b67-2e4e-49dd-9911-874591fbb2b6 · Oct 6
$10,903 SGD
$8,536 USD
View
Price last confirmed 31 days ago
11 more retailers have this diamond
Prices start from $6,125 SGDSave up to $1,829 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
$6,125 SGD