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Round|Natural|GIA

1.01ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2487928817

Certificate GIA 2487928817

Diamond specifications and retailer prices

From $1,767 SGD
HK$10,800 HKD
As of October 30, 2026
Save $2,431 SGD (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,166 SGD at NZ Jewellers · As of September 28, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2487928817. Listed at 17 retailers as of October 26, 2026, with a 138% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2487928817
Dimensions6.40 × 6.37 × 3.99 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.40 mm6.37 mm1.01 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2487928817
Side View
Table 59.0%Crown 34°Girdle: ThickPavilion 41.4°Culet: NoneDepth 62.5%

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: Oct 30
Current: $2,588 SGD|Low: $1,767 SGD|High: $4,483 SGD|Avg: $2,665 SGD|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 12$1,767 SGD
Retailer 11$2,099 SGD
Retailer 9$2,181 SGD
Retailer 10$2,209 SGD
Retailer 7$2,318 SGD
Retailer 4$2,354 SGD
Retailer 2$2,469 SGD
Retailer 8$2,569 SGD
Retailer 1$2,588 SGD
Retailer 3$3,008 SGD
Retailer 5$3,269 SGD
Retailer 6$4,199 SGD

34 data points across 12 retailers

17 retailers$1,767 SGD to $4,199 SGD

A
Cheapest Retailer
-
$1,767 SGD
HK$10,800 HKD
A
Retailer 2
-
$2,099 SGD
$1,642 USD
View
B+
Retailer 3
-
$2,181 SGD
$1,706 USD
View
A
Retailer 4
-
$2,209 SGD
$1,728 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,318 SGD
$1,813 USD
View
B+
Retailer 6
-
$2,469 SGD
View
Retailer 7
-
$2,527 SGD
$1,977 USD
View
Price last confirmed 23 days ago
Retailer 8
-
$2,529 SGD
$1,978 USD
View
Price last confirmed 23 days ago
B+
Retailer 9
-
$2,569 SGD
$2,010 USD
View
B+
Retailer 10
-
$2,588 SGD
£1,594 GBP
View
Retailer 11
-
$2,645 SGD
$2,069 USD
View
Price last confirmed 32 days ago
Retailer 12
-
$2,917 SGD
$2,282 USD
View
Price last confirmed 54 days ago
Retailer 13
-
$2,917 SGD
$2,282 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
$3,269 SGD
€2,435 EUR
View
B
Retailer 15
-
$4,199 SGD
£2,586 GBP
View
Retailer 16
-
$6,166 SGD
$4,823 USD
View
Price last confirmed 51 days ago
Most Expensive
NZ Jewellers
2105d1f5-fcce-43ff-8434-dd5e975e32f8 · Sep 28
$6,166 SGD
$4,823 USD
View
Price last confirmed 33 days ago
16 more retailers have this diamond
Prices start from $1,767 SGDSave up to $2,431 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
$1,767 SGD