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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 $2,978 SGD
HK$18,200 HKD
As of October 29, 2026
Save $3,717 SGD (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,938 SGD 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 125% 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 29
Current: $3,874 SGD|Low: $2,978 SGD|High: $6,741 SGD|Avg: $4,132 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 3$2,978 SGD
Retailer 4$3,169 SGD
Retailer 9$3,479 SGD
Retailer 10$3,675 SGD
Retailer 1$3,874 SGD
Retailer 2$4,136 SGD
Retailer 5$4,136 SGD
Retailer 11$4,270 SGD
Retailer 6$4,663 SGD
Retailer 8$4,849 SGD
Retailer 7$6,696 SGD

33 data points across 11 retailers

22 retailers$2,978 SGD to $6,696 SGD

A
Cheapest Retailer
-
$2,978 SGD
HK$18,200 HKD
A
Retailer 2
-
$3,169 SGD
₹236,090 INR
View
A
Retailer 3
-
$3,479 SGD
View
A
Retailer 4
-
$3,582 SGD
$2,802 USD
View
A
Retailer 5
-
$3,641 SGD
$2,848 USD
View
A
Retailer 6
-
$3,675 SGD
$2,875 USD
View
Final sale: no returns
A
Retailer 7
-
$3,682 SGD
$2,880 USD
View
A
Retailer 8
-
$3,874 SGD
$3,030 USD
View
Retailer 9
-
$3,982 SGD
$3,115 USD
View
Price last confirmed 43 days ago
Retailer 10
-
$3,982 SGD
$3,115 USD
View
Price last confirmed 15 days ago
Retailer 11
-
$3,982 SGD
$3,115 USD
View
Price last confirmed 11 days ago
Retailer 12
-
$4,136 SGD
$3,235 USD
View
Price last confirmed 15 days ago
B+
Retailer 13
-
$4,136 SGD
£2,547 GBP
View
B+
Retailer 14
-
$4,172 SGD
View
Retailer 15
-
$4,270 SGD
A$5,139 AUD
View
Price last confirmed 27 days ago
Retailer 16
-
$4,595 SGD
$3,594 USD
View
Price last confirmed 39 days ago
Retailer 17
-
$4,595 SGD
$3,594 USD
View
Price last confirmed 12 days ago
B+
Retailer 18
-
$4,663 SGD
€3,474 EUR
View
B+
Retailer 19
-
$4,849 SGD
ZAR 61,282 ZAR
View
B
Retailer 20
-
$6,696 SGD
£4,124 GBP
View
Retailer 21
-
$6,938 SGD
$5,427 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
02e91905-9404-4f2b-904c-e8ffbccf0f33 · Oct 17
$6,938 SGD
$5,427 USD
View
Price last confirmed 14 days ago
21 more retailers have this diamond
Prices start from $2,978 SGDSave up to $3,717 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
$2,978 SGD