Round|Natural|GIA

1.02ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1236370974

Certificate GIA 1236370974

Diamond specifications and retailer prices

From $2,534 USD
HK$19,800 HKD
As of October 29, 2026
Save $3,342 USD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,876 USD at NZ Jewellers · As of October 27, 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 27, 2026, with prices from $2,534 to $5,876, a $3,342 spread on the same certified stone. NZ Jewellers lists it at $5,876. 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
Color
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: $3,503 USD|Low: $2,534 USD|High: $5,709 USD|Avg: $3,701 USD|+2.8%
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$2,534 USD
Retailer 7$2,994 USD
Retailer 8$3,113 USD
Retailer 10$3,255 USD
Retailer 2$3,373 USD
Retailer 1$3,503 USD
Retailer 9$3,603 USD
Retailer 3$3,950 USD
Retailer 5$4,107 USD
Retailer 4$5,671 USD

44 data points across 10 retailers

15 retailers$2,534 USD to $5,876 USD

A
Cheapest Retailer
-
$2,534 USD
HK$19,800 HKD
A
Retailer 2
-
$2,994 USD
View
B+
Retailer 3
-
$3,113 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,255 USD
View
B+
Retailer 5
-
$3,373 USD
View
B+
Retailer 6
-
$3,373 USD
View
B+
Retailer 7
-
$3,502 USD
View
B+
Retailer 8
-
$3,503 USD
£2,758 GBP
View
B+
Retailer 9
-
$3,517 USD
View
Retailer 10
-
$3,603 USD
A$5,543 AUD
View
Price last confirmed 22 days ago
B+
Retailer 11
-
$3,892 USD
View
B+
Retailer 12
-
$3,950 USD
€3,762 EUR
View
B+
Retailer 13
-
$4,107 USD
ZAR 66,347 ZAR
View
B
Retailer 14
-
$5,671 USD
£4,465 GBP
View
Most Expensive
B
NZ Jewellers
c1f75fdc-853b-40e8-9dbe-3ee0c257e535 · Oct 27
$5,876 USD
View
14 more retailers have this diamond
Prices start from $2,534 USDSave up to $3,342 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
1.02ct Round
$2,534 USD