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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 $3,240 SGD
HK$19,800 HKD
As of October 29, 2026
Save $4,272 SGD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,512 SGD 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 $3,240 to $7,512, a $4,272 spread on the same certified stone. NZ Jewellers lists it at $7,512. 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: $7,512 SGD|Low: $3,240 SGD|High: $7,512 SGD|Avg: $5,002 SGD
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$3,240 SGD
Retailer 9$3,828 SGD
Retailer 10$3,980 SGD
Retailer 3$4,161 SGD
Retailer 4$4,312 SGD
Retailer 12$4,477 SGD
Retailer 2$4,478 SGD
Retailer 11$4,606 SGD
Retailer 5$5,050 SGD
Retailer 7$5,250 SGD
Retailer 6$7,249 SGD
NZ Jewellers$7,512 SGD

44 data points across 12 retailers

15 retailers$3,240 SGD to $7,512 SGD

A
Cheapest Retailer
-
$3,240 SGD
HK$19,800 HKD
A
Retailer 2
-
$3,828 SGD
$2,994 USD
View
B+
Retailer 3
-
$3,980 SGD
$3,113 USD
View
Final sale: no returns
B+
Retailer 4
-
$4,161 SGD
$3,255 USD
View
B+
Retailer 5
-
$4,312 SGD
$3,373 USD
View
B+
Retailer 6
-
$4,312 SGD
$3,373 USD
View
B+
Retailer 7
-
$4,477 SGD
$3,502 USD
View
B+
Retailer 8
-
$4,478 SGD
£2,758 GBP
View
B+
Retailer 9
-
$4,496 SGD
$3,517 USD
View
Retailer 10
-
$4,606 SGD
A$5,543 AUD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
$4,976 SGD
$3,892 USD
View
B+
Retailer 12
-
$5,050 SGD
€3,762 EUR
View
B+
Retailer 13
-
$5,250 SGD
ZAR 66,347 ZAR
View
B
Retailer 14
-
$7,249 SGD
£4,465 GBP
View
Most Expensive
B
NZ Jewellers
c1f75fdc-853b-40e8-9dbe-3ee0c257e535 · Oct 30
$7,512 SGD
$5,876 USD
View
14 more retailers have this diamond
Prices start from $3,240 SGDSave up to $4,272 SGD

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
$3,240 SGD