CaratHunter
Plans
Round|Natural|GIA

1.02ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1236370974

Certificate GIA 1236370974

Diamond specifications and retailer prices

From $3,608 AUD
HK$19,800 HKD
As of October 29, 2026
Save $4,757 AUD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,365 AUD 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 $3,608 to $8,365, a $4,757 spread on the same certified stone. NZ Jewellers lists it at $8,365. 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: $4,987 AUD|Low: $3,608 AUD|High: $8,127 AUD|Avg: $5,273 AUD|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6$3,608 AUD
Retailer 7$4,262 AUD
Retailer 8$4,432 AUD
Retailer 10$4,634 AUD
Retailer 2$4,802 AUD
Retailer 1$4,987 AUD
Retailer 9$5,129 AUD
Retailer 3$5,623 AUD
Retailer 5$5,847 AUD
Retailer 4$8,073 AUD

43 data points across 10 retailers

15 retailers$3,608 AUD to $8,365 AUD

A
Cheapest Retailer
-
$3,608 AUD
HK$19,800 HKD
A
Retailer 2
-
$4,262 AUD
$2,994 USD
View
B+
Retailer 3
-
$4,432 AUD
$3,113 USD
View
Final sale: no returns
B+
Retailer 4
-
$4,634 AUD
$3,255 USD
View
B+
Retailer 5
-
$4,802 AUD
$3,373 USD
View
B+
Retailer 6
-
$4,802 AUD
$3,373 USD
View
B+
Retailer 7
-
$4,985 AUD
$3,502 USD
View
B+
Retailer 8
-
$4,987 AUD
£2,758 GBP
View
B+
Retailer 9
-
$5,007 AUD
$3,517 USD
View
Retailer 10
-
$5,129 AUD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
$5,541 AUD
$3,892 USD
View
B+
Retailer 12
-
$5,623 AUD
€3,762 EUR
View
B+
Retailer 13
-
$5,847 AUD
ZAR 66,347 ZAR
View
B
Retailer 14
-
$8,073 AUD
£4,465 GBP
View
Most Expensive
B
NZ Jewellers
c1f75fdc-853b-40e8-9dbe-3ee0c257e535 · Oct 30
$8,365 AUD
$5,876 USD
View
14 more retailers have this diamond
Prices start from $3,608 AUDSave up to $4,757 AUD

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
$3,608 AUD