Round|Natural|GIA

1.02ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6531774754

Certificate GIA 6531774754

Diamond specifications and retailer prices

From £1,932 GBP
HK$20,100 HKD
As of October 29, 2026
Save £2,559 GBP (57%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £4,921 GBP at NZ Jewellers · As of September 19, 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 6531774754. Listed at 25 retailers as of October 29, 2026, with a 132% 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
FluorescenceFaint
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6531774754
Dimensions6.38 × 6.41 × 4.04 mm
L/W Ratio1.00
Top View
6.38 mm6.41 mm1.02 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6531774754
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.2%

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: £4,491 GBP|Low: £1,932 GBP|High: £4,589 GBP|Avg: £2,742 GBP
NZ Jewellers
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 30, 2026
Retailer 5£1,932 GBP
Retailer 15£2,062 GBP
Retailer 9£2,091 GBP
Retailer 17£2,091 GBP
Retailer 11£2,121 GBP
Retailer 10£2,156 GBP
Retailer 8£2,335 GBP
Retailer 6£2,425 GBP
Retailer 2£2,488 GBP
Retailer 18£2,546 GBP
Retailer 20£2,546 GBP
Retailer 16£2,628 GBP
Retailer 13£2,677 GBP
Retailer 12£2,694 GBP
Retailer 21£2,829 GBP
Retailer 14£2,904 GBP
Retailer 4£2,921 GBP
Retailer 7£3,059 GBP
Retailer 19£3,139 GBP
Retailer 3£4,316 GBP
NZ Jewellers£4,491 GBP

23 data points across 21 retailers

25 retailers£1,932 GBP to £4,491 GBP

A
Cheapest Retailer
-
£1,932 GBP
HK$20,100 HKD
A
Retailer 2
-
£2,062 GBP
$2,746 USD
View
A
Retailer 3
-
£2,091 GBP
$2,785 USD
View
A
Retailer 4
-
£2,091 GBP
$2,785 USD
View
A
Retailer 5
-
£2,121 GBP
$2,825 USD
View
A
Retailer 6
-
£2,154 GBP
A$4,413 AUD
View
A
Retailer 7
-
£2,156 GBP
$2,871 USD
View
Final sale: no returns
A
Retailer 8
-
£2,335 GBP
$3,110 USD
View
A
Retailer 9
-
£2,425 GBP
$3,229 USD
View
A
Retailer 10
-
£2,488 GBP
View
B+
Retailer 11
-
£2,546 GBP
$3,390 USD
View
B+
Retailer 12
-
£2,546 GBP
$3,390 USD
View
B+
Retailer 13
-
£2,628 GBP
$3,500 USD
View
Retailer 14
-
£2,659 GBP
$3,541 USD
View
Price last confirmed 42 days ago
B+
Retailer 15
-
£2,677 GBP
View
B+
Retailer 16
-
£2,694 GBP
$3,588 USD
View
B+
Retailer 17
-
£2,829 GBP
€3,588 EUR
View
Retailer 18
-
£2,904 GBP
A$5,951 AUD
View
Price last confirmed 21 days ago
Retailer 19
-
£2,921 GBP
$3,890 USD
View
Price last confirmed 7 days ago
Retailer 20
-
£2,953 GBP
$3,932 USD
View
Price last confirmed 38 days ago
B+
Retailer 21
-
£3,059 GBP
$4,074 USD
View
B+
Retailer 22
-
£3,139 GBP
ZAR 67,526 ZAR
View
B
Retailer 23
-
£4,316 GBP
View
B
Retailer 24
-
£4,491 GBP
$5,980 USD
View
Most Expensive
NZ Jewellers
de278a56-2361-45d9-a9ac-6d825ab6d4ca · Sep 19
£4,921 GBP
$6,553 USD
View
Price last confirmed 40 days ago
24 more retailers have this diamond
Prices start from £1,932 GBPSave up to £2,559 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
£1,932 GBP