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Marquise|Natural|GIA

1.02ct I SI1 Marquise Natural Diamond

ID • I/SI1 • GIA 1232982541

Certificate GIA 1232982541

Diamond specifications and retailer prices

From £1,870 GBP
As of November 4, 2026
Save £2,388 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,464 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.02ct natural marquise diamond

This 1.02ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1232982541. Listed at 18 retailers as of November 4, 2026, with a 128% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1232982541
Dimensions10.58 × 5.26 × 3.26 mm
L/W Ratio2.01
Girdle conditionFaceted
Top View
10.58 mm5.26 mm1.02 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232982541
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 61.9%

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 4
Current: £2,155 GBP|Low: £1,870 GBP|High: £4,399 GBP|Avg: £2,636 GBP|-1.3%
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
Retailer 15
November 6, 2026
Retailer 2£1,870 GBP
Retailer 15£1,931 GBP
Retailer 14£2,011 GBP
Retailer 4£2,069 GBP
Retailer 7£2,134 GBP
Retailer 1£2,155 GBP
Retailer 6£2,249 GBP
Retailer 5£2,353 GBP
Retailer 10£2,474 GBP
Retailer 13£2,623 GBP
Retailer 9£2,626 GBP
Retailer 8£2,972 GBP
Retailer 11£3,116 GBP
Retailer 3£3,836 GBP
Retailer 12£4,258 GBP

21 data points across 15 retailers

18 retailers£1,870 GBP to £4,258 GBP

A
Cheapest Retailer
-
£1,870 GBP
A
Retailer 2
-
£1,931 GBP
View
A
Retailer 3
-
£2,011 GBP
View
A
Retailer 4
-
£2,069 GBP
View
B+
Retailer 5
-
£2,134 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,155 GBP
View
B+
Retailer 7
-
£2,249 GBP
View
B+
Retailer 8
-
£2,353 GBP
View
B+
Retailer 9
-
£2,474 GBP
View
B+
Retailer 10
-
£2,623 GBP
View
B
Retailer 11
-
£2,626 GBP
View
Retailer 12
-
£2,697 GBP
View
Price last confirmed 37 days ago
Retailer 13
-
£2,796 GBP
View
Price last confirmed 34 days ago
B+
Retailer 14
-
£2,972 GBP
View
B
Retailer 15
-
£3,116 GBP
View
B
Retailer 16
-
£3,836 GBP
View
B
Retailer 17
-
£4,258 GBP
View
Most Expensive
NZ Jewellers
b342d307-a87d-4e5b-9640-fdac27389808 · Sep 30
£4,464 GBP
$5,975 USD
View
Price last confirmed 37 days ago
17 more retailers have this diamond
Prices start from £1,870 GBPSave up to £2,388 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 Marquise
£1,870 GBP