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Round|Natural|GIA

1.01ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6541985573

Certificate GIA 6541985573

Diamond specifications and retailer prices

From $1,991 SGD
As of November 6, 2026
Save $3,597 SGD (64%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,588 SGD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6541985573. Listed at 20 retailers as of November 5, 2026, with a 181% 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

1.01
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6541985573
Dimensions6.39 × 6.40 × 4.00 mm
L/W Ratio1.00
Top View
6.39 mm6.40 mm1.01 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541985573
Side View
Table 56.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NDepth 62.6%

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: $1,991 SGD|Low: $1,991 SGD|High: $4,739 SGD|Avg: $3,252 SGD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$1,991 SGD
Retailer 7$2,468 SGD
Retailer 2$2,887 SGD
Retailer 4$3,073 SGD
Retailer 5$3,262 SGD
Retailer 8$3,295 SGD
Retailer 3$3,400 SGD
Retailer 6$4,670 SGD

40 data points across 8 retailers

20 retailers$1,991 SGD to $5,588 SGD

A
Cheapest Retailer
-
$1,991 SGD
B+
Retailer 2
-
$2,344 SGD
View
B+
Retailer 3
-
$2,415 SGD
View
B+
Retailer 4
-
$2,468 SGD
View
Final sale: no returns
Retailer 5
-
$2,673 SGD
View
Price last confirmed 44 days ago
Retailer 6
-
$2,673 SGD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$2,673 SGD
View
B+
Retailer 8
-
$2,708 SGD
View
B+
Retailer 9
-
$2,796 SGD
View
B+
Retailer 10
-
$2,850 SGD
View
B+
Retailer 11
-
$2,887 SGD
View
B
Retailer 12
-
$3,073 SGD
View
B
Retailer 13
-
$3,085 SGD
View
Retailer 14
-
$3,085 SGD
View
Price last confirmed 45 days ago
B+
Retailer 15
-
$3,262 SGD
View
Retailer 16
-
$3,295 SGD
View
Price last confirmed 32 days ago
B+
Retailer 17
-
$3,400 SGD
View
B
Retailer 18
-
$4,670 SGD
View
B
Retailer 19
-
$5,588 SGD
View
Most Expensive
NZ Jewellers
fc881e6b-95b8-4248-a7c6-d5d1784db456 · Sep 21
$5,588 SGD
$4,375 USD
View
Price last confirmed 45 days ago
19 more retailers have this diamond
Prices start from $1,991 SGDSave up to $3,597 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
1.01ct Round
$1,991 SGD