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Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1423768522

Certificate GIA 1423768522

Diamond specifications and retailer prices

From $2,569 SGD
HK$15,700 HKD
As of October 31, 2026
Save $4,521 SGD (64%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $7,090 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1423768522. Listed at 23 retailers as of October 30, 2026, with prices from $2,569 to $7,090, a $4,521 spread on the same certified stone. NZ Jewellers lists it at $7,090. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1423768522
Dimensions6.36 × 6.39 × 3.95 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.36 mm6.39 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1423768522
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.0%

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: Oct 31
Current: $7,090 SGD|Low: $2,455 SGD|High: $7,090 SGD|Avg: $3,589 SGD|+0.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 31, 2026
Retailer 16$2,569 SGD
Retailer 10$2,627 SGD
Retailer 22$2,720 SGD
Retailer 5$2,774 SGD
Retailer 3$2,835 SGD
Retailer 9$2,835 SGD
Retailer 11$2,963 SGD
Retailer 14$2,963 SGD
Retailer 18$3,062 SGD
Retailer 12$3,100 SGD
Retailer 7$3,273 SGD
Retailer 17$3,348 SGD
Retailer 4$3,528 SGD
Retailer 6$3,528 SGD
Retailer 20$3,545 SGD
Retailer 19$3,603 SGD
Retailer 8$3,643 SGD
Retailer 21$3,977 SGD
Retailer 2$4,148 SGD
Retailer 13$4,168 SGD
Retailer 15$5,739 SGD
NZ Jewellers$7,090 SGD

17 data points across 22 retailers

23 retailers$2,569 SGD to $7,090 SGD

A
Cheapest Retailer
-
$2,569 SGD
HK$15,700 HKD
A
Retailer 2
-
$2,627 SGD
$2,055 USD
View
A
Retailer 3
-
$2,720 SGD
$2,128 USD
View
A
Retailer 4
-
$2,774 SGD
$2,170 USD
View
A
Retailer 5
-
$2,835 SGD
$2,218 USD
View
Final sale: no returns
A
Retailer 6
-
$2,835 SGD
$2,218 USD
View
A
Retailer 7
-
$2,963 SGD
$2,318 USD
View
A
Retailer 8
-
$2,963 SGD
$2,318 USD
View
A
Retailer 9
-
$3,062 SGD
$2,395 USD
View
A
Retailer 10
-
$3,100 SGD
$2,425 USD
View
B+
Retailer 11
-
$3,273 SGD
£2,016 GBP
View
B+
Retailer 12
-
$3,348 SGD
$2,619 USD
View
B+
Retailer 13
-
$3,528 SGD
$2,760 USD
View
B+
Retailer 14
-
$3,528 SGD
$2,760 USD
View
B+
Retailer 15
-
$3,545 SGD
$2,773 USD
View
B+
Retailer 16
-
$3,603 SGD
£2,219 GBP
View
B+
Retailer 17
-
$3,643 SGD
$2,850 USD
View
Retailer 18
-
$3,843 SGD
A$4,625 AUD
View
Price last confirmed 23 days ago
B+
Retailer 19
-
$3,977 SGD
€2,963 EUR
View
B+
Retailer 20
-
$4,148 SGD
$3,245 USD
View
B+
Retailer 21
-
$4,168 SGD
ZAR 52,674 ZAR
View
B
Retailer 22
-
$5,739 SGD
£3,535 GBP
View
Most Expensive
B
NZ Jewellers
7330d7c4-5473-4174-83b5-06070554d291 · Oct 30
$7,090 SGD
$5,546 USD
View
22 more retailers have this diamond
Prices start from $2,569 SGDSave up to $4,521 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
$2,569 SGD