Round|Natural|GIA

1.02ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 3525837494

Certificate GIA 3525837494

Diamond specifications and retailer prices

From £1,939 GBP
HK$20,300 HKD
As of October 29, 2026
Save £2,461 GBP (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,752 GBP at NZ Jewellers · As of September 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 3525837494. Listed at 23 retailers as of October 29, 2026, with a 127% 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 angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3525837494
Dimensions6.45 × 6.40 × 4.01 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.45 mm6.40 mm1.02 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 3525837494
Side View
Table 58.0%Crown 35.5°Girdle: MD-STKPavilion 41°Culet: NoneDepth 62.4%

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: £3,064 GBP|Low: £1,939 GBP|High: £4,429 GBP|Avg: £2,704 GBP|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 14£1,939 GBP
Retailer 5£2,323 GBP
Retailer 4£2,370 GBP
Retailer 11£2,381 GBP
Retailer 13£2,415 GBP
Retailer 12£2,519 GBP
Retailer 7£2,526 GBP
Retailer 3£2,617 GBP
Retailer 6£2,717 GBP
Retailer 8£2,718 GBP
Retailer 2£2,806 GBP
Retailer 1£3,064 GBP
Retailer 10£3,187 GBP
Retailer 9£4,400 GBP

31 data points across 14 retailers

23 retailers£1,939 GBP to £4,400 GBP

A
Cheapest Retailer
-
£1,939 GBP
HK$20,300 HKD
A
Retailer 2
-
£2,323 GBP
$3,113 USD
View
A
Retailer 3
-
£2,370 GBP
$3,176 USD
View
Retailer 4
-
£2,381 GBP
$3,190 USD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£2,415 GBP
$3,236 USD
View
Final sale: no returns
B+
Retailer 6
-
£2,519 GBP
$3,375 USD
View
B+
Retailer 7
-
£2,526 GBP
View
Retailer 8
-
£2,617 GBP
$3,507 USD
View
Price last confirmed 14 days ago
Retailer 9
-
£2,617 GBP
$3,507 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£2,717 GBP
SGD 4,919 SGD
View
Retailer 11
-
£2,717 GBP
$3,641 USD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
£2,718 GBP
View
Retailer 13
-
£2,728 GBP
$3,655 USD
View
Price last confirmed 43 days ago
Retailer 14
-
£2,806 GBP
A$5,784 AUD
View
Price last confirmed 26 days ago
Retailer 15
-
£3,020 GBP
$4,046 USD
View
Price last confirmed 10 days ago
B+
Retailer 16
-
£3,064 GBP
€3,910 EUR
View
Retailer 17
-
£3,147 GBP
$4,217 USD
View
Price last confirmed 43 days ago
Retailer 18
-
£3,147 GBP
$4,217 USD
View
Price last confirmed 38 days ago
B+
Retailer 19
-
£3,187 GBP
ZAR 68,982 ZAR
View
B
Retailer 20
-
£4,400 GBP
View
Retailer 21
-
£4,559 GBP
$6,109 USD
View
Price last confirmed 10 days ago
Retailer 22
-
£4,752 GBP
$6,367 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
9a71b17f-8934-4e17-94c6-b0ed6510c950 · Sep 17
£4,752 GBP
$6,367 USD
View
Price last confirmed 43 days ago
22 more retailers have this diamond
Prices start from £1,939 GBPSave up to £2,461 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
£1,939 GBP