CaratHunter
Plans
Round|Natural|GIA

1.02ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2558562263

Certificate GIA 2558562263

Diamond specifications and retailer prices

From £1,748 GBP
HK$18,300 HKD
As of October 31, 2026
Save £2,161 GBP (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,050 GBP 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 124% 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 31
Current: £1,844 GBP|Low: £1,748 GBP|High: £3,935 GBP|Avg: £2,500 GBP|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 4£1,748 GBP
Retailer 1£1,844 GBP
Retailer 9£2,031 GBP
Retailer 10£2,146 GBP
Retailer 5£2,261 GBP
Retailer 6£2,414 GBP
Retailer 2£2,493 GBP
Retailer 7£2,722 GBP
Retailer 3£2,858 GBP
Retailer 8£3,909 GBP

33 data points across 10 retailers

22 retailers£1,748 GBP to £3,909 GBP

A
Cheapest Retailer
-
£1,748 GBP
HK$18,300 HKD
A
Retailer 2
-
£1,844 GBP
₹235,271 INR
View
A
Retailer 3
-
£2,031 GBP
SGD 3,678 SGD
View
A
Retailer 4
-
£2,091 GBP
$2,802 USD
View
A
Retailer 5
-
£2,126 GBP
$2,848 USD
View
A
Retailer 6
-
£2,146 GBP
$2,875 USD
View
Final sale: no returns
A
Retailer 7
-
£2,149 GBP
$2,880 USD
View
A
Retailer 8
-
£2,261 GBP
$3,030 USD
View
Retailer 9
-
£2,325 GBP
$3,115 USD
View
Price last confirmed 44 days ago
Retailer 10
-
£2,325 GBP
$3,115 USD
View
Price last confirmed 15 days ago
Retailer 11
-
£2,325 GBP
$3,115 USD
View
Price last confirmed 11 days ago
Retailer 12
-
£2,414 GBP
$3,235 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
£2,414 GBP
View
B+
Retailer 14
-
£2,436 GBP
SGD 4,410 SGD
View
Retailer 15
-
£2,493 GBP
A$5,139 AUD
View
Price last confirmed 27 days ago
Retailer 16
-
£2,682 GBP
$3,594 USD
View
Price last confirmed 39 days ago
Retailer 17
-
£2,682 GBP
$3,594 USD
View
Price last confirmed 12 days ago
B+
Retailer 18
-
£2,722 GBP
€3,474 EUR
View
B+
Retailer 19
-
£2,858 GBP
ZAR 61,860 ZAR
View
B
Retailer 20
-
£3,909 GBP
View
Retailer 21
-
£4,050 GBP
$5,427 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
02e91905-9404-4f2b-904c-e8ffbccf0f33 · Oct 17
£4,050 GBP
$5,427 USD
View
Price last confirmed 14 days ago
21 more retailers have this diamond
Prices start from £1,748 GBPSave up to £2,161 GBP

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
£1,748 GBP