Round|Natural|GIA

1.02ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2504149723

Certificate GIA 2504149723

Diamond specifications and retailer prices

From £1,540 GBP
As of November 6, 2026
Save £2,080 GBP (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,332 GBP at NZ Jewellers · As of October 20, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2504149723. Listed at 20 retailers as of November 4, 2026, with a 135% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2504149723
Dimensions6.49 × 6.46 × 3.94 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.49 mm6.46 mm1.02 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2504149723
Side View
Table 59.0%Crown 32.5°Girdle: STK-STKPavilion 41.2°Culet: NoneDepth 60.7%

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: Nov 6
Current: £1,982 GBP|Low: £1,531 GBP|High: £3,674 GBP|Avg: £2,254 GBP|-1.7%
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
November 6, 2026
Retailer 13£1,540 GBP
Retailer 4£1,856 GBP
Retailer 14£1,912 GBP
Retailer 1£1,982 GBP
Retailer 3£2,036 GBP
Retailer 7£2,146 GBP
Retailer 5£2,152 GBP
Retailer 8£2,180 GBP
Retailer 2£2,321 GBP
Retailer 6£2,391 GBP
Retailer 11£2,410 GBP
Retailer 9£2,420 GBP
Retailer 10£2,529 GBP
Retailer 12£3,620 GBP

39 data points across 14 retailers

20 retailers£1,540 GBP to £3,620 GBP

A
Cheapest Retailer
-
£1,540 GBP
B+
Retailer 2
-
£1,856 GBP
View
Retailer 3
-
£1,892 GBP
View
Price last confirmed 82 days ago
B+
Retailer 4
-
£1,912 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,982 GBP
View
B+
Retailer 6
-
£2,036 GBP
View
Retailer 7
-
£2,072 GBP
View
Price last confirmed 21 days ago
Retailer 8
-
£2,072 GBP
View
Price last confirmed 15 days ago
B+
Retailer 9
-
£2,146 GBP
View
Retailer 10
-
£2,152 GBP
View
Price last confirmed 15 days ago
B+
Retailer 11
-
£2,177 GBP
View
B+
Retailer 12
-
£2,180 GBP
View
Retailer 13
-
£2,321 GBP
View
Price last confirmed 30 days ago
B
Retailer 14
-
£2,363 GBP
View
Retailer 15
-
£2,391 GBP
View
Price last confirmed 14 days ago
B+
Retailer 16
-
£2,410 GBP
View
B+
Retailer 17
-
£2,420 GBP
View
B+
Retailer 18
-
£2,529 GBP
View
B
Retailer 19
-
£3,620 GBP
View
Most Expensive
NZ Jewellers
6913f62d-6958-4895-961a-cedb5c20af33 · Oct 20
£4,332 GBP
$5,831 USD
View
Price last confirmed 16 days ago
19 more retailers have this diamond
Prices start from £1,540 GBPSave up to £2,080 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
£1,540 GBP