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Round|Natural|GIA

1.02ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1538610511

Certificate GIA 1538610511

Diamond specifications and retailer prices

From £1,725 GBP
As of November 5, 2026
Save £568 GBP (25%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,029 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1538610511. Listed at 16 retailers as of November 5, 2026, with a 33% 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 angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1538610511
Dimensions6.45 × 6.39 × 4.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
6.45 mm6.39 mm1.02 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1538610511
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

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 5
Current: £4,029 GBP|Low: £1,464 GBP|High: £4,029 GBP|Avg: £2,099 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
November 5, 2026
Retailer 11£1,464 GBP
Retailer 14£1,549 GBP
Retailer 2£1,725 GBP
Retailer 7£1,779 GBP
Retailer 9£1,797 GBP
Retailer 4£1,835 GBP
Retailer 15£1,862 GBP
Retailer 5£1,927 GBP
Retailer 19£1,927 GBP
Retailer 3£2,016 GBP
Retailer 16£2,019 GBP
Retailer 10£2,031 GBP
Retailer 8£2,159 GBP
Retailer 6£2,224 GBP
Retailer 12£2,293 GBP
Retailer 18£2,339 GBP
Retailer 13£2,389 GBP
Retailer 17£3,394 GBP
NZ Jewellers£4,029 GBP

23 data points across 19 retailers

16 retailers£1,725 GBP to £2,293 GBP

Retailer 1
-
£1,464 GBP
Price last confirmed 17 days ago
Retailer 2
-
£1,549 GBP
View
Price last confirmed 18 days ago
A
Retailer 3
-
£1,725 GBP
View
B+
Retailer 4
-
£1,832 GBP
View
Retailer 5
-
£1,927 GBP
View
Price last confirmed 19 days ago
Retailer 6
-
£1,927 GBP
View
Price last confirmed 21 days ago
Retailer 7
-
£2,016 GBP
View
Price last confirmed 22 days ago
Retailer 8
-
£2,019 GBP
View
Price last confirmed 18 days ago
Retailer 9
-
£2,031 GBP
View
Price last confirmed 19 days ago
Retailer 10
-
£2,057 GBP
View
Price last confirmed 18 days ago
Retailer 11
-
£2,159 GBP
View
Price last confirmed 30 days ago
Retailer 12
-
£2,224 GBP
View
Price last confirmed 19 days ago
B
Retailer 13
-
£2,293 GBP
View
Retailer 14
-
£2,339 GBP
View
Price last confirmed 20 days ago
Retailer 15
-
£3,394 GBP
View
Price last confirmed 18 days ago
Most Expensive
NZ Jewellers
bc8e1558-567d-489b-8947-d2d437791496 · Oct 17
£4,029 GBP
$5,423 USD
View
Price last confirmed 20 days ago
15 more retailers have this diamond
Prices start from £1,725 GBPSave up to £568 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
£1,725 GBP