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Round|Natural|GIA

1.02ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1236370974

Certificate GIA 1236370974

Diamond specifications and retailer prices

From $4,497 NZD
HK$19,800 HKD
As of October 29, 2026
Save $5,929 NZD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,426 NZD at NZ Jewellers · As of October 30, 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 1236370974. Listed at 15 retailers as of October 29, 2026, with prices from $4,497 to $10,426, a $5,929 spread on the same certified stone. NZ Jewellers lists it at $10,426. 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
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1236370974
Dimensions6.43 × 6.41 × 3.97 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Key to symbols
Crystal, Feather, Knot, Needle
Top View
6.43 mm6.41 mm1.02 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1236370974
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.9%

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 29
Current: $10,426 NZD|Low: $4,497 NZD|High: $10,426 NZD|Avg: $6,943 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 8$4,497 NZD
Retailer 9$5,312 NZD
Retailer 10$5,523 NZD
Retailer 3$5,775 NZD
Retailer 4$5,985 NZD
Retailer 12$6,214 NZD
Retailer 2$6,216 NZD
Retailer 11$6,393 NZD
Retailer 5$7,009 NZD
Retailer 7$7,287 NZD
Retailer 6$10,061 NZD
NZ Jewellers$10,426 NZD

44 data points across 12 retailers

15 retailers$4,497 NZD to $10,426 NZD

A
Cheapest Retailer
-
$4,497 NZD
HK$19,800 HKD
A
Retailer 2
-
$5,312 NZD
$2,994 USD
View
B+
Retailer 3
-
$5,523 NZD
$3,113 USD
View
Final sale: no returns
B+
Retailer 4
-
$5,775 NZD
$3,255 USD
View
B+
Retailer 5
-
$5,985 NZD
$3,373 USD
View
B+
Retailer 6
-
$5,985 NZD
$3,373 USD
View
B+
Retailer 7
-
$6,214 NZD
$3,502 USD
View
B+
Retailer 8
-
$6,216 NZD
£2,758 GBP
View
B+
Retailer 9
-
$6,240 NZD
$3,517 USD
View
Retailer 10
-
$6,393 NZD
A$5,543 AUD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
$6,906 NZD
$3,892 USD
View
B+
Retailer 12
-
$7,009 NZD
€3,762 EUR
View
B+
Retailer 13
-
$7,287 NZD
ZAR 66,347 ZAR
View
B
Retailer 14
-
$10,061 NZD
£4,465 GBP
View
Most Expensive
B
NZ Jewellers
c1f75fdc-853b-40e8-9dbe-3ee0c257e535 · Oct 30
$10,426 NZD
$5,876 USD
View
14 more retailers have this diamond
Prices start from $4,497 NZDSave up to $5,929 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
$4,497 NZD