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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 $2,389 USD
As of October 30, 2026
Save $3,767 USD (61%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,156 USD 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 $2,389 to $6,156, a $3,767 spread on the same certified stone. NZ Jewellers lists it at $6,156. 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
Color
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: Oct 30
Current: $6,156 USD|Low: $2,257 USD|High: $6,156 USD|Avg: $3,365 USD
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
October 31, 2026
Retailer 5$2,350 USD
Retailer 8$2,389 USD
Retailer 7$2,461 USD
Retailer 9$2,630 USD
Retailer 15$2,668 USD
Retailer 18$2,668 USD
Retailer 16$2,770 USD
Retailer 12$2,842 USD
Retailer 6$3,025 USD
Retailer 3$3,078 USD
Retailer 11$3,103 USD
Retailer 10$3,299 USD
Retailer 4$3,429 USD
Retailer 13$3,457 USD
Retailer 2$3,619 USD
Retailer 17$4,931 USD
Retailer 14$5,105 USD
NZ Jewellers$6,156 USD

29 data points across 18 retailers

22 retailers$2,389 USD to $6,156 USD

Retailer 1
-
$2,350 USD
Price last confirmed 10 days ago
A
Retailer 2
-
$2,389 USD
View
B+
Retailer 3
-
$2,461 USD
View
Final sale: no returns
B+
Retailer 4
-
$2,535 USD
View
B+
Retailer 5
-
$2,630 USD
View
B+
Retailer 6
-
$2,668 USD
View
B+
Retailer 7
-
$2,668 USD
View
B+
Retailer 8
-
$2,705 USD
View
B+
Retailer 9
-
$2,770 USD
View
B+
Retailer 10
-
$2,842 USD
£2,238 GBP
View
B+
Retailer 11
-
$3,025 USD
View
B
Retailer 12
-
$3,078 USD
View
B+
Retailer 13
-
$3,103 USD
£2,444 GBP
View
Retailer 14
-
$3,299 USD
A$5,076 AUD
View
Price last confirmed 23 days ago
B+
Retailer 15
-
$3,342 USD
View
Retailer 16
-
$3,419 USD
View
Price last confirmed 16 days ago
B+
Retailer 17
-
$3,429 USD
£2,700 GBP
View
B+
Retailer 18
-
$3,457 USD
€3,292 EUR
View
B
Retailer 19
-
$3,619 USD
ZAR 58,471 ZAR
View
B
Retailer 20
-
$4,931 USD
£3,883 GBP
View
B
Retailer 21
-
$5,105 USD
£4,020 GBP
View
Most Expensive
B
NZ Jewellers
87d487b7-68e7-47e4-8469-29aec22710e0 · Oct 30
$6,156 USD
View
21 more retailers have this diamond
Prices start from $2,389 USDSave up to $3,767 USD

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
$2,389 USD