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Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 2566053993

Certificate GIA 2566053993

Diamond specifications and retailer prices

From $1,980 SGD
HK$12,100 HKD
As of October 31, 2026
Save $3,525 SGD (64%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $5,505 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 very-good cut grade and certified by GIA 2566053993. Listed at 22 retailers as of October 30, 2026, with prices from $1,980 to $5,505, a $3,525 spread on the same certified stone. NZ Jewellers lists it at $5,505. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566053993
Dimensions6.17 × 6.24 × 4.01 mm
L/W Ratio1.01
Top View
6.17 mm6.24 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566053993
Side View
Table 59.0%Crown 37.5°Girdle: THN-THKPavilion 40.8°Culet: NoneDepth 64.7%

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: $5,505 SGD|Low: $1,964 SGD|High: $5,721 SGD|Avg: $3,011 SGD|-3.8%
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
October 31, 2026
Retailer 13$1,980 SGD
Retailer 2$2,008 SGD
Retailer 21$2,346 SGD
Retailer 8$2,379 SGD
Retailer 19$2,541 SGD
Retailer 9$2,594 SGD
Retailer 4$2,634 SGD
Retailer 7$2,634 SGD
Retailer 3$2,672 SGD
Retailer 14$2,755 SGD
Retailer 12$2,759 SGD
Retailer 5$2,810 SGD
Retailer 17$2,872 SGD
Retailer 6$2,889 SGD
Retailer 11$3,037 SGD
Retailer 16$3,236 SGD
Retailer 18$3,597 SGD
Retailer 15$3,605 SGD
Retailer 10$3,836 SGD
Retailer 20$4,637 SGD
NZ Jewellers$5,505 SGD

17 data points across 21 retailers

22 retailers$1,980 SGD to $5,505 SGD

A
Cheapest Retailer
-
$1,980 SGD
HK$12,100 HKD
A
Retailer 2
-
$2,008 SGD
₹149,597 INR
View
A
Retailer 3
-
$2,379 SGD
$1,861 USD
View
Retailer 4
-
$2,518 SGD
$1,970 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$2,541 SGD
£1,565 GBP
View
A
Retailer 6
-
$2,594 SGD
$2,029 USD
View
A
Retailer 7
-
$2,634 SGD
$2,060 USD
View
A
Retailer 8
-
$2,634 SGD
$2,060 USD
View
B+
Retailer 9
-
$2,672 SGD
$2,090 USD
View
A
Retailer 10
-
$2,755 SGD
$2,155 USD
View
A
Retailer 11
-
$2,759 SGD
View
A
Retailer 12
-
$2,810 SGD
$2,198 USD
View
B+
Retailer 13
-
$2,872 SGD
£1,769 GBP
View
A
Retailer 14
-
$2,889 SGD
$2,260 USD
View
B+
Retailer 15
-
$3,037 SGD
$2,376 USD
View
B+
Retailer 16
-
$3,236 SGD
ZAR 40,896 ZAR
View
Retailer 17
-
$3,437 SGD
A$4,137 AUD
View
Price last confirmed 24 days ago
B+
Retailer 18
-
$3,597 SGD
€2,680 EUR
View
B+
Retailer 19
-
$3,605 SGD
$2,820 USD
View
B+
Retailer 20
-
$3,836 SGD
$3,001 USD
View
B
Retailer 21
-
$4,637 SGD
£2,856 GBP
View
Most Expensive
B
NZ Jewellers
d7dd0661-fee1-4ae8-a928-035d6a473d34 · Oct 30
$5,505 SGD
$4,306 USD
View
21 more retailers have this diamond
Prices start from $1,980 SGDSave up to $3,525 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
$1,980 SGD