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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 7526656191

Certificate GIA 7526656191

Diamond specifications and retailer prices

From $1,851 SGD
As of November 6, 2026
Save $3,553 SGD (66%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,404 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct 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 7526656191. Listed at 20 retailers as of November 5, 2026, with prices from $1,851 to $5,404, a $3,553 spread on the same certified stone. NZ Jewellers lists it at $5,404. 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

1.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7526656191
Dimensions6.38 × 6.34 × 3.99 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Pinpoint
Top View
6.38 mm6.34 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7526656191
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.7%

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: $1,851 SGD|Low: $1,851 SGD|High: $4,577 SGD|Avg: $2,727 SGD|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 1$1,851 SGD
Retailer 10$1,880 SGD
Retailer 2$2,335 SGD
Retailer 3$2,385 SGD
Retailer 4$2,440 SGD
Retailer 11$2,464 SGD
Retailer 5$2,613 SGD
Retailer 6$2,774 SGD
Retailer 7$3,155 SGD
Retailer 9$3,159 SGD
Retailer 8$4,517 SGD

28 data points across 11 retailers

20 retailers$1,851 SGD to $5,404 SGD

A
Cheapest Retailer
-
$1,851 SGD
A
Retailer 2
-
$1,880 SGD
View
B+
Retailer 3
-
$2,289 SGD
View
B+
Retailer 4
-
$2,335 SGD
View
B+
Retailer 5
-
$2,385 SGD
View
Final sale: no returns
B+
Retailer 6
-
$2,408 SGD
View
B+
Retailer 7
-
$2,440 SGD
View
B+
Retailer 8
-
$2,464 SGD
View
B+
Retailer 9
-
$2,585 SGD
View
Retailer 10
-
$2,585 SGD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$2,613 SGD
View
B+
Retailer 12
-
$2,625 SGD
View
B+
Retailer 13
-
$2,762 SGD
View
B+
Retailer 14
-
$2,774 SGD
View
B
Retailer 15
-
$2,982 SGD
View
B+
Retailer 16
-
$3,155 SGD
View
B+
Retailer 17
-
$3,159 SGD
View
Retailer 18
-
$3,187 SGD
View
Price last confirmed 32 days ago
B
Retailer 19
-
$4,517 SGD
View
Most Expensive
B
NZ Jewellers
2a0b8fc2-4073-4b2e-ae37-93bc25de2e8c · Nov 5
$5,404 SGD
$4,231 USD
View
19 more retailers have this diamond
Prices start from $1,851 SGDSave up to $3,553 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
1.00ct Round
$1,851 SGD