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Radiant|Natural|GIA

1.31ct F SI1 Radiant Natural Diamond

ID • F/SI1 • GIA 1555260068

Certificate GIA 1555260068

Diamond specifications and retailer prices

From $5,812 SGD
As of November 3, 2026
Save $4,006 SGD (41%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,864 SGD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.31ct natural radiant diamond

This 1.31ct natural radiant 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 stated by the retailer rather than the lab and certified by GIA 1555260068. Listed at 10 retailers as of November 2, 2026, with a 69% 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

1.31
Carat
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.2°
Pavilion angle37.1°
OriginNatural
Grading LabGIA
CertificateGIA 1555260068
Dimensions7.23 × 5.52 × 3.73 mm
L/W Ratio1.31
Girdle conditionThick
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.23 mm5.52 mm1.31 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555260068
Side View
Table 68.0%Crown 49.2°Girdle: SLI-POLPavilion 37.1°Culet: NoneDepth 67.6%

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 3
Current: $6,012 SGD|Low: $5,812 SGD|High: $9,995 SGD|Avg: $6,982 SGD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 3$5,812 SGD
Retailer 1$6,012 SGD
Retailer 5$6,113 SGD
Retailer 4$6,245 SGD
Retailer 2$9,818 SGD

34 data points across 5 retailers

10 retailers$5,812 SGD to $9,818 SGD

A
Cheapest Retailer
-
$5,812 SGD
A
Retailer 2
-
$6,012 SGD
View
Retailer 3
-
$6,113 SGD
View
Price last confirmed 28 days ago
Retailer 4
-
$6,195 SGD
View
Price last confirmed 31 days ago
Retailer 5
-
$6,200 SGD
View
Price last confirmed 38 days ago
Retailer 6
-
$6,236 SGD
View
Price last confirmed 45 days ago
Retailer 7
-
$6,245 SGD
View
Price last confirmed 29 days ago
B
Retailer 8
-
$9,818 SGD
View
Retailer 9
-
$10,794 SGD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
a7f48e73-dfcf-4f7a-a3ce-801cde0ed1a9 · Sep 20
$10,864 SGD
$8,477 USD
View
Price last confirmed 47 days ago
9 more retailers have this diamond
Prices start from $5,812 SGDSave up to $4,006 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
1.31ct Radiant
$5,812 SGD