Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6445352304

Certificate GIA 6445352304

Diamond specifications and retailer prices

From $2,997 SGD
$2,344 USD
As of October 30, 2026
Save $3,511 SGD (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $6,742 SGD at NZ Jewellers · As of September 27, 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 6445352304. Listed at 25 retailers as of October 29, 2026, with a 117% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6445352304
Dimensions6.40 × 6.34 × 3.93 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.40 mm6.34 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6445352304
Side View
Table 57.0%Crown 34.5°Girdle: Slightly ThickPavilion 40.8°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 30
Current: $4,114 SGD|Low: $2,791 SGD|High: $6,551 SGD|Avg: $4,236 SGD|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 9$3,140 SGD
Retailer 7$3,222 SGD
Retailer 10$3,236 SGD
Retailer 3$3,735 SGD
Retailer 5$3,976 SGD
Retailer 1$4,114 SGD
Retailer 2$4,135 SGD
Retailer 4$4,273 SGD
Retailer 8$4,713 SGD
Retailer 6$6,507 SGD

35 data points across 10 retailers

25 retailers$2,997 SGD to $6,507 SGD

A
Cheapest Retailer
-
$2,997 SGD
$2,344 USD
Retailer 2
-
$3,026 SGD
$2,367 USD
View
Price last confirmed 76 days ago
B+
Retailer 3
-
$3,076 SGD
$2,406 USD
View
B+
Retailer 4
-
$3,140 SGD
$2,456 USD
View
B+
Retailer 5
-
$3,222 SGD
$2,520 USD
View
B+
Retailer 6
-
$3,236 SGD
$2,531 USD
View
Final sale: no returns
B+
Retailer 7
-
$3,249 SGD
A$3,910 AUD
View
B+
Retailer 8
-
$3,445 SGD
$2,695 USD
View
Retailer 9
-
$3,507 SGD
$2,743 USD
View
Price last confirmed 19 days ago
Retailer 10
-
$3,507 SGD
$2,743 USD
View
Price last confirmed 22 days ago
B+
Retailer 11
-
$3,550 SGD
$2,777 USD
View
Retailer 12
-
$3,641 SGD
$2,848 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
$3,735 SGD
£2,301 GBP
View
B
Retailer 14
-
$3,976 SGD
$3,110 USD
View
B
Retailer 15
-
$4,001 SGD
$3,130 USD
View
B
Retailer 16
-
$4,001 SGD
$3,130 USD
View
Retailer 17
-
$4,046 SGD
$3,165 USD
View
Price last confirmed 22 days ago
B
Retailer 18
-
$4,114 SGD
£2,534 GBP
View
B
Retailer 19
-
$4,129 SGD
$3,230 USD
View
Retailer 20
-
$4,135 SGD
A$4,976 AUD
View
Price last confirmed 23 days ago
B
Retailer 21
-
$4,273 SGD
€3,183 EUR
View
Retailer 22
-
$4,494 SGD
$3,515 USD
View
Price last confirmed 16 days ago
B
Retailer 23
-
$4,713 SGD
ZAR 59,554 ZAR
View
B
Retailer 24
-
$6,507 SGD
£4,008 GBP
View
Most Expensive
NZ Jewellers
5b7c1452-920d-407a-a1bd-0f029b656fa7 · Sep 27
$6,742 SGD
$5,274 USD
View
Price last confirmed 34 days ago
24 more retailers have this diamond
Prices start from $2,997 SGDSave up to $3,511 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
$2,997 SGD