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Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2564040643

Certificate GIA 2564040643

Diamond specifications and retailer prices

From $2,419 SGD
As of November 6, 2026
Save $3,036 SGD (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,844 SGD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2564040643. Listed at 10 retailers as of November 4, 2026, with a 126% 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

1.00
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2564040643
Dimensions6.33 × 6.38 × 3.98 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Extra Facet
Top View
6.33 mm6.38 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564040643
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.6%

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 6
Current: $2,988 SGD|Low: $2,403 SGD|High: $5,706 SGD|Avg: $3,341 SGD|-4.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$2,419 SGD
Retailer 2$2,432 SGD
Retailer 7$2,883 SGD
Retailer 1$2,988 SGD
Retailer 6$3,363 SGD
Retailer 4$3,777 SGD
Retailer 3$5,455 SGD

37 data points across 7 retailers

10 retailers$2,419 SGD to $5,455 SGD

A
Cheapest Retailer
-
$2,419 SGD
A
Retailer 2
-
$2,432 SGD
View
A
Retailer 3
-
$2,883 SGD
View
Final sale: no returns
A
Retailer 4
-
$2,988 SGD
View
Retailer 5
-
$3,274 SGD
View
Price last confirmed 44 days ago
A
Retailer 6
-
$3,361 SGD
View
Retailer 7
-
$3,363 SGD
View
Price last confirmed 10 days ago
A
Retailer 8
-
$3,777 SGD
View
B+
Retailer 9
-
$5,455 SGD
View
Most Expensive
NZ Jewellers
d5859d22-8a46-45b3-9940-0cfdf16a9d40 · Sep 21
$6,844 SGD
$5,358 USD
View
Price last confirmed 45 days ago
9 more retailers have this diamond
Prices start from $2,419 SGDSave up to $3,036 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
$2,419 SGD