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Round|Natural|GIA

1.00ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6425908649

Certificate GIA 6425908649

Diamond specifications and retailer prices

From $4,406 NZD
HK$19,400 HKD
As of October 30, 2026
Save $6,629 NZD (60%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,035 NZD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6425908649. Listed at 19 retailers as of October 29, 2026, with prices from $4,406 to $11,035, a $6,629 spread on the same certified stone. Diamond Quarter lists it at $11,035. 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6425908649
Dimensions6.51 × 6.47 × 3.87 mm
L/W Ratio1.01
Top View
6.51 mm6.47 mm1.00 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6425908649
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.6%

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: $6,480 NZD|Low: $4,411 NZD|High: $10,262 NZD|Avg: $6,111 NZD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 2$4,437 NZD
Retailer 3$5,367 NZD
Retailer 8$5,383 NZD
Retailer 6$5,449 NZD
Retailer 7$5,509 NZD
Retailer 9$5,596 NZD
Retailer 4$6,297 NZD
Retailer 1$6,480 NZD
Retailer 5$10,194 NZD

32 data points across 9 retailers

19 retailers$4,406 NZD to $11,035 NZD

Retailer 1
-
$4,163 NZD
$2,346 USD
Price last confirmed 17 days ago
A
Retailer 2
-
$4,406 NZD
HK$19,400 HKD
View
A
Retailer 3
-
$4,437 NZD
₹238,187 INR
View
A
Retailer 4
-
$5,177 NZD
$2,918 USD
View
A
Retailer 5
-
$5,367 NZD
£2,382 GBP
View
B+
Retailer 6
-
$5,383 NZD
$3,034 USD
View
A
Retailer 7
-
$5,449 NZD
$3,071 USD
View
Retailer 8
-
$5,509 NZD
$3,105 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$5,596 NZD
$3,154 USD
View
Final sale: no returns
B+
Retailer 10
-
$6,063 NZD
$3,417 USD
View
B+
Retailer 11
-
$6,197 NZD
SGD 4,720 SGD
View
B+
Retailer 12
-
$6,297 NZD
$3,549 USD
View
B+
Retailer 13
-
$6,297 NZD
£2,795 GBP
View
B+
Retailer 14
-
$6,320 NZD
$3,562 USD
View
B+
Retailer 15
-
$6,480 NZD
€3,478 EUR
View
B
Retailer 16
-
$7,947 NZD
$4,479 USD
View
B
Retailer 17
-
$10,194 NZD
£4,524 GBP
View
B
Retailer 18
-
$10,562 NZD
$5,953 USD
View
Most Expensive
B
Diamond Quarter
1.0SI2E6449B9CDN · Oct 29
$11,035 NZD
£4,897 GBP
View
18 more retailers have this diamond
Prices start from $4,406 NZDSave up to $6,629 NZD

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
$4,406 NZD