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Round|Natural|GIA

1.02ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2558562263

Certificate GIA 2558562263

Diamond specifications and retailer prices

From $4,156 NZD
HK$18,300 HKD
As of October 31, 2026
Save $5,137 NZD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $9,629 NZD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.02ct natural round diamond

This 1.02ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2558562263. Listed at 22 retailers as of October 29, 2026, with a 124% 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

1.02
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2558562263
Dimensions6.40 × 6.45 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.40 mm6.45 mm1.02 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2558562263
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.2%

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: $5,741 NZD|Low: $4,156 NZD|High: $9,356 NZD|Avg: $5,937 NZD|+0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$4,156 NZD
Retailer 3$4,383 NZD
Retailer 9$4,829 NZD
Retailer 10$5,101 NZD
Retailer 6$5,376 NZD
Retailer 1$5,741 NZD
Retailer 2$5,926 NZD
Retailer 7$6,472 NZD
Retailer 4$6,794 NZD
Retailer 8$9,293 NZD

33 data points across 10 retailers

22 retailers$4,156 NZD to $9,293 NZD

A
Cheapest Retailer
-
$4,156 NZD
HK$18,300 HKD
A
Retailer 2
-
$4,383 NZD
₹235,271 INR
View
A
Retailer 3
-
$4,829 NZD
SGD 3,678 SGD
View
A
Retailer 4
-
$4,972 NZD
$2,802 USD
View
A
Retailer 5
-
$5,053 NZD
$2,848 USD
View
A
Retailer 6
-
$5,101 NZD
$2,875 USD
View
Final sale: no returns
A
Retailer 7
-
$5,110 NZD
$2,880 USD
View
A
Retailer 8
-
$5,376 NZD
$3,030 USD
View
Retailer 9
-
$5,527 NZD
$3,115 USD
View
Price last confirmed 44 days ago
Retailer 10
-
$5,527 NZD
$3,115 USD
View
Price last confirmed 16 days ago
Retailer 11
-
$5,527 NZD
$3,115 USD
View
Price last confirmed 12 days ago
Retailer 12
-
$5,740 NZD
$3,235 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
$5,741 NZD
£2,548 GBP
View
B+
Retailer 14
-
$5,790 NZD
SGD 4,410 SGD
View
Retailer 15
-
$5,926 NZD
A$5,139 AUD
View
Price last confirmed 28 days ago
Retailer 16
-
$6,377 NZD
$3,594 USD
View
Price last confirmed 40 days ago
Retailer 17
-
$6,377 NZD
$3,594 USD
View
Price last confirmed 13 days ago
B+
Retailer 18
-
$6,472 NZD
€3,474 EUR
View
B+
Retailer 19
-
$6,794 NZD
ZAR 61,860 ZAR
View
B
Retailer 20
-
$9,293 NZD
£4,124 GBP
View
Retailer 21
-
$9,629 NZD
$5,427 USD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
02e91905-9404-4f2b-904c-e8ffbccf0f33 · Oct 17
$9,629 NZD
$5,427 USD
View
Price last confirmed 15 days ago
21 more retailers have this diamond
Prices start from $4,156 NZDSave up to $5,137 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
1.02ct Round
$4,156 NZD