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Round|Natural|GIA

1.01ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2557861967

Certificate GIA 2557861967

Diamond specifications and retailer prices

From $1,814 SGD
As of November 4, 2026
Save $2,442 SGD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,925 SGD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557861967. Listed at 18 retailers as of November 2, 2026, with a 135% 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

1.01
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2557861967
Dimensions6.38 × 6.43 × 3.97 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Natural
Top View
6.38 mm6.43 mm1.01 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557861967
Side View
Table 60.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.9%

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 4
Current: $2,245 SGD|Low: $1,814 SGD|High: $4,308 SGD|Avg: $2,879 SGD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 6$1,814 SGD
Retailer 3$1,915 SGD
Retailer 1$2,245 SGD
Retailer 2$2,648 SGD
Retailer 7$2,985 SGD
Retailer 4$3,303 SGD
Retailer 5$4,256 SGD

40 data points across 7 retailers

18 retailers$1,814 SGD to $4,256 SGD

A
Cheapest Retailer
-
$1,814 SGD
A
Retailer 2
-
$1,915 SGD
View
A
Retailer 3
-
$2,245 SGD
View
B+
Retailer 4
-
$2,271 SGD
View
B+
Retailer 5
-
$2,274 SGD
View
Retailer 6
-
$2,429 SGD
View
Price last confirmed 39 days ago
Retailer 7
-
$2,429 SGD
View
Price last confirmed 29 days ago
Retailer 8
-
$2,429 SGD
View
Price last confirmed 29 days ago
B+
Retailer 9
-
$2,440 SGD
View
Retailer 10
-
$2,529 SGD
View
Price last confirmed 10 days ago
B+
Retailer 11
-
$2,604 SGD
View
B+
Retailer 12
-
$2,648 SGD
View
Retailer 13
-
$2,804 SGD
View
Price last confirmed 38 days ago
B+
Retailer 14
-
$2,985 SGD
View
B
Retailer 15
-
$3,303 SGD
View
B
Retailer 16
-
$4,256 SGD
View
Retailer 17
-
$5,925 SGD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
8d1b63ea-2986-4b81-a6cd-327223e6f70d · Sep 28
$5,925 SGD
$4,639 USD
View
Price last confirmed 39 days ago
17 more retailers have this diamond
Prices start from $1,814 SGDSave up to $2,442 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
1.01ct Round
$1,814 SGD