Round|Natural|GIA

1.02ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1555587184

Certificate GIA 1555587184

Diamond specifications and retailer prices

From £1,645 GBP
As of October 30, 2026
Save £720 GBP (30%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,957 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555587184. Listed at 11 retailers as of October 30, 2026, with a 44% 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
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555587184
Dimensions6.46 × 6.51 × 3.99 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.46 mm6.51 mm1.02 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555587184
Side View
Table 59.0%CrownGirdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £3,957 GBP|Low: £1,645 GBP|High: £4,151 GBP|Avg: £2,621 GBP|-4.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 4£1,645 GBP
Retailer 2£1,956 GBP
Retailer 6£2,045 GBP
Retailer 8£2,271 GBP
Retailer 9£2,331 GBP
Retailer 10£2,365 GBP
Retailer 3£2,634 GBP
Retailer 7£3,440 GBP
Retailer 5£3,772 GBP
NZ Jewellers£3,957 GBP

33 data points across 10 retailers

11 retailers£1,645 GBP to £2,365 GBP

A
Cheapest Retailer
-
£1,645 GBP
Retailer 2
-
£1,956 GBP
View
Price last confirmed 7 days ago
A
Retailer 3
-
£2,045 GBP
View
Retailer 4
-
£2,271 GBP
View
Price last confirmed 15 days ago
Retailer 5
-
£2,331 GBP
View
Price last confirmed 16 days ago
B+
Retailer 6
-
£2,365 GBP
View
Retailer 7
-
£2,388 GBP
View
Price last confirmed 22 days ago
Retailer 8
-
£2,634 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£3,440 GBP
View
Price last confirmed 16 days ago
Retailer 10
-
£3,772 GBP
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
89a0f8b9-dc52-4308-86f8-642617521619 · Oct 20
£3,957 GBP
$5,326 USD
View
Price last confirmed 16 days ago
10 more retailers have this diamond
Prices start from £1,645 GBPSave up to £720 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
£1,645 GBP