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Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6525508015

Certificate GIA 6525508015

Diamond specifications and retailer prices

From $2,795 SGD
As of November 6, 2026
Save $3,553 SGD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $7,596 SGD at NZ Jewellers · As of October 3, 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 6525508015. Listed at 20 retailers as of November 4, 2026, with a 127% 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6525508015
Dimensions6.40 × 6.37 × 3.91 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.40 mm6.37 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6525508015
Side View
Table 59.0%Crown 36°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 61.2%

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: $3,882 SGD|Low: $2,795 SGD|High: $6,441 SGD|Avg: $4,260 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$2,795 SGD
Retailer 5$2,912 SGD
Retailer 6$3,256 SGD
Retailer 10$3,348 SGD
Retailer 2$3,354 SGD
Retailer 3$3,823 SGD
Retailer 1$3,882 SGD
Retailer 4$4,219 SGD
Retailer 7$6,348 SGD
Retailer 9$6,424 SGD

35 data points across 10 retailers

20 retailers$2,795 SGD to $6,348 SGD

A
Cheapest Retailer
-
$2,795 SGD
A
Retailer 2
-
$2,912 SGD
View
A
Retailer 3
-
$3,256 SGD
View
A
Retailer 4
-
$3,348 SGD
View
A
Retailer 5
-
$3,354 SGD
View
Final sale: no returns
A
Retailer 6
-
$3,456 SGD
View
Retailer 7
-
$3,633 SGD
View
Price last confirmed 29 days ago
Retailer 8
-
$3,633 SGD
View
Price last confirmed 29 days ago
Retailer 9
-
$3,633 SGD
View
Price last confirmed 39 days ago
B+
Retailer 10
-
$3,704 SGD
View
Retailer 11
-
$3,773 SGD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$3,814 SGD
View
B+
Retailer 13
-
$3,823 SGD
View
B+
Retailer 14
-
$3,882 SGD
View
Retailer 15
-
$4,192 SGD
View
Price last confirmed 38 days ago
B+
Retailer 16
-
$4,219 SGD
View
B
Retailer 17
-
$6,348 SGD
View
Retailer 18
-
$6,424 SGD
View
Price last confirmed 9 days ago
Retailer 19
-
$7,596 SGD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
c33334bf-ecea-4bc2-9b6f-720edc750f50 · Oct 3
$7,596 SGD
$5,947 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from $2,795 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
$2,795 SGD