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Round|Natural|GIA

1.00ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5556893217

Certificate GIA 5556893217

Diamond specifications and retailer prices

From $3,004 SGD
$2,350 USD
As of November 1, 2026
Save $4,866 SGD (62%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $7,870 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5556893217. Listed at 22 retailers as of October 30, 2026, with prices from $3,004 to $7,870, a $4,866 spread on the same certified stone. NZ Jewellers lists it at $7,870. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5556893217
Dimensions6.34 × 6.39 × 3.98 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Needle
Top View
6.34 mm6.39 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556893217
Side View
Table 55.0%Crown 35°Girdle: Med. - Sli. ThickPavilion 40.6°Culet: NoneDepth 62.5%

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 1
Current: $7,870 SGD|Low: $2,885 SGD|High: $7,870 SGD|Avg: $4,275 SGD
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
November 1, 2026
Retailer 5$3,004 SGD
Retailer 8$3,054 SGD
Retailer 7$3,146 SGD
Retailer 9$3,362 SGD
Retailer 15$3,411 SGD
Retailer 18$3,411 SGD
Retailer 16$3,541 SGD
Retailer 2$3,622 SGD
Retailer 6$3,867 SGD
Retailer 3$3,935 SGD
Retailer 12$4,001 SGD
Retailer 10$4,218 SGD
Retailer 4$4,384 SGD
Retailer 11$4,388 SGD
Retailer 13$4,627 SGD
Retailer 17$6,304 SGD
Retailer 14$6,527 SGD
NZ Jewellers$7,870 SGD

29 data points across 18 retailers

22 retailers$3,004 SGD to $7,870 SGD

A
Cheapest Retailer
-
$3,004 SGD
$2,350 USD
A
Retailer 2
-
$3,054 SGD
$2,389 USD
View
B+
Retailer 3
-
$3,146 SGD
$2,461 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,241 SGD
$2,535 USD
View
B+
Retailer 5
-
$3,362 SGD
$2,630 USD
View
B+
Retailer 6
-
$3,411 SGD
$2,668 USD
View
B+
Retailer 7
-
$3,411 SGD
$2,668 USD
View
B+
Retailer 8
-
$3,458 SGD
$2,705 USD
View
B+
Retailer 9
-
$3,541 SGD
$2,770 USD
View
B+
Retailer 10
-
$3,622 SGD
£2,231 GBP
View
B+
Retailer 11
-
$3,867 SGD
$3,025 USD
View
B
Retailer 12
-
$3,935 SGD
$3,078 USD
View
B+
Retailer 13
-
$4,001 SGD
£2,464 GBP
View
Retailer 14
-
$4,218 SGD
A$5,076 AUD
View
Price last confirmed 25 days ago
B+
Retailer 15
-
$4,273 SGD
$3,342 USD
View
Retailer 16
-
$4,371 SGD
$3,419 USD
View
Price last confirmed 17 days ago
B+
Retailer 17
-
$4,384 SGD
£2,700 GBP
View
B+
Retailer 18
-
$4,388 SGD
€3,269 EUR
View
B
Retailer 19
-
$4,627 SGD
ZAR 58,471 ZAR
View
Retailer 20
-
$6,304 SGD
£3,883 GBP
View
Price last confirmed 7 days ago
B
Retailer 21
-
$6,527 SGD
£4,020 GBP
View
Most Expensive
B
NZ Jewellers
87d487b7-68e7-47e4-8469-29aec22710e0 · Oct 30
$7,870 SGD
$6,156 USD
View
21 more retailers have this diamond
Prices start from $3,004 SGDSave up to $4,866 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
$3,004 SGD