CaratHunter
Plans
Oval|Natural|GIA

1.00ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 2558152906

Certificate GIA 2558152906

Diamond specifications and retailer prices

From $1,378 SGD
As of November 6, 2026
Save $1,223 SGD (47%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,600 SGD at With Clarity · As of November 6, 2026
View at With Clarity

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558152906. Listed at 6 retailers as of November 6, 2026, with prices from $1,378 to $2,600, a $1,223 spread on the same certified stone. With Clarity lists it at $2,600. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558152906
Dimensions8.15 × 5.54 × 3.33 mm
L/W Ratio1.47
Top View
8.15 mm5.54 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558152906
Side View
Table 61.0%CrownGirdle: ThickPavilionCulet: NoneDepth 60.2%

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: $1,712 SGD|Low: $1,378 SGD|High: $2,632 SGD|Avg: $1,865 SGD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
With Clarity
November 6, 2026
Retailer 3$1,378 SGD
Retailer 5$1,560 SGD
Retailer 1$1,712 SGD
Retailer 6$1,783 SGD
Retailer 4$1,910 SGD
Retailer 2$1,986 SGD
With Clarity$2,600 SGD

13 data points across 7 retailers

6 retailers$1,378 SGD to $2,600 SGD

A
Cheapest Retailer
-
$1,378 SGD
A
Retailer 2
-
$1,560 SGD
View
A
Retailer 3
-
$1,712 SGD
View
A
Retailer 4
-
$1,910 SGD
View
B+
Retailer 5
-
$1,986 SGD
View
Most Expensive
B+
With Clarity
2558152906 · Nov 6
$2,600 SGD
$2,029 USD
View
5 more retailers have this diamond
Prices start from $1,378 SGDSave up to $1,223 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
$1,378 SGD