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Oval|Natural|GIA

1.00ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 6501640651

Certificate GIA 6501640651

Diamond specifications and retailer prices

From $1,539 SGD
As of November 6, 2026
Save $3,729 SGD (71%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,269 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6501640651. Listed at 17 retailers as of November 5, 2026, with prices from $1,539 to $5,269, a $3,729 spread on the same certified stone. NZ Jewellers lists it at $5,269. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6501640651
Dimensions8.16 × 5.34 × 3.42 mm
L/W Ratio1.53
Top View
8.16 mm5.34 mm1.00 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6501640651
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.1%

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: $1,539 SGD|Low: $1,539 SGD|High: $2,638 SGD|Avg: $2,135 SGD|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$1,539 SGD
Retailer 5$1,574 SGD
Retailer 8$2,025 SGD
Retailer 2$2,095 SGD
Retailer 6$2,111 SGD
Retailer 3$2,180 SGD
Retailer 4$2,608 SGD
Retailer 7$2,621 SGD

34 data points across 8 retailers

17 retailers$1,539 SGD to $5,269 SGD

A
Cheapest Retailer
-
$1,539 SGD
A
Retailer 2
-
$1,574 SGD
View
B+
Retailer 3
-
$1,911 SGD
View
B+
Retailer 4
-
$1,969 SGD
View
B+
Retailer 5
-
$2,025 SGD
View
B+
Retailer 6
-
$2,095 SGD
View
B+
Retailer 7
-
$2,111 SGD
View
Retailer 8
-
$2,161 SGD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$2,161 SGD
View
B+
Retailer 10
-
$2,180 SGD
View
B+
Retailer 11
-
$2,249 SGD
View
B+
Retailer 12
-
$2,259 SGD
View
B+
Retailer 13
-
$2,379 SGD
View
B
Retailer 14
-
$2,493 SGD
View
B+
Retailer 15
-
$2,608 SGD
View
B
Retailer 16
-
$4,215 SGD
View
Most Expensive
C
NZ Jewellers
b207e61f-dc65-427a-bf81-52655f8bc27c · Nov 5
$5,269 SGD
$4,111 USD
View
16 more retailers have this diamond
Prices start from $1,539 SGDSave up to $3,729 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 Oval
$1,539 SGD